Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "corrosion inhibitor" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 20
Tytuł:
Adsorption and corrosion inhibition behavior of stainless steel 316 by aliphatic amine compounds in acidic solution
Adsorpcja i hamowanie korozji stali nierdzewnej 316 przez alifatyczne związki aminowe w kwaśnym roztworze
Autorzy:
Goudarzi, N.
Peikari, M.
Reza Zahri, M.
Reza Mousavi, H.
Powiązania:
https://bibliotekanauki.pl/articles/356447.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
korozja
stal nierdzewna
Armohib 28
corrosion inhibitor
stainless steel 316
Opis:
Gravimetric and electrochemical measurements were performed to investigate the effectiveness of an aliphatic amine compound with trade name of Armohib 28. It was found that the percentage inhibition efficiency increased with the increase of the compound concentration. Polarization curves indicate that the inhibitor under investigation acts as cathodic type which retards the rate of corrosion reactions by adsorbing on to the steel surface according to Langmuir adsorption isotherm. The activation energy and thermodynamic parameters were calculated and analyzed. The data obtained from electrochemical impedance spectroscopy (EIS) were analyzed to model the corrosion inhibition process through equivalent circuit.
W celu zbadania skuteczności alifatycznego związku aminowego o nazwie handlowej Armohib 28 przeprowadzono pomiary grawimetryczne i elektrochemiczne. Stwierdzono, że procentowa skuteczność hamowania wzrosła wraz ze wzrostem stężenia związku. Krzywe polaryzacji wskazują, że badany inhibitor działa jak inhibitor typu katodowego, który opóźnia szybkość reakcji korozji adsorbując na powierzchni stali według izotermy adsorpcji Langmuira. Energia aktywacji i parametry termodynamiczne zostały obliczone i analizowane. Dane uzyskane z elektrochemicznej spektroskopii impedancyjnej (EIS) wykorzystano do modelowania procesu hamowania korozji przy użyciu obwodu zastępczego.
Źródło:
Archives of Metallurgy and Materials; 2012, 57, 3; 845-851
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorption and inhibitive properties of methanol extract of Eeuphorbia Heterophylla for the corrosion of copper in 0.5 M nitric acid solutions
Autorzy:
Fouda, A. S.
Elmorsi, M. A.
Abou-Elmagd, B. S.
Powiązania:
https://bibliotekanauki.pl/articles/780024.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
acid corrosion
copper
green inhibitor
adsorption
kinetic parameters
Opis:
The adsorption and the inhibitive properties of methanol extract of Euphorbia heterophylla on copper in 0.5 M HNO3  have been studied by weight loss method at different temperatures (30-50°C), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Also, the surface morphology was analyzed by scanning electron microscopy (SEM). It was found that the inhibition efficiency increases with increasing extract doses and decreased with increasing temperature. The polarization data revealed that this extract acts as mixed type inhibitor. The adsorption process was more favored at lower temperatures with larger negative standard free energy. The extract was adsorbed physically on the copper surface followed Frumkin isotherm.
Źródło:
Polish Journal of Chemical Technology; 2017, 19, 1; 95-103
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of multifunctional fluids to improve hydrocarbon production
Autorzy:
Knapik, E.
Stopa, J.
Powiązania:
https://bibliotekanauki.pl/articles/299010.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
foam
gas wells dewatering
corrosion inhibitor
synergism
Opis:
In the course of the mature gas fields exploitation there are many technical problems including the corrosion damage, formation of hydrates and water cut. In many cases, an effective solution of these problems is the dosage of appropriately selected chemicals. Commercially available corrosion inhibitors, hydrate inhibitors, demulsifiers and foaming agents are injected in a form of single, multifunctional mixture through one liner which reduces injection costs. The paper presents the results of laboratory tests, which aim was to investigate synergism and antagonism in multifunctional mixture containing different commercially available surfactants, corrosion and hydrate inhibitors. Correlations between final product composition and performances such as liquid unloading efficiency, corrosion protection and pour point were studied. The described approach allows to adapt the tertiary mixture composition (foaming agent + corrosion inhibitor + hydrates inhibitor) to the current production conditions. The polarization behavior of electrodes in brines with and without mixture of additives has been studied by a cyclic voltammetric method. The addition of increasing concentrations of each chemicals causes the reduction in the corrosion current density. The measurements using a modified method of the US Bureau of Mines show synergistic effect of surfactants and corrosion inhibitor on foamabilities. Multifunctional mixtures are stable under storage conditions and not cause any compatibility problems with reservoir fluids.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 117-125
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion and saline deposition protection of gas and oil field equipment with the use of combined corrosion and saline deposition inhibitors and multifunctional inhibitors
Ochrona terenowego sprzętu do produkcji ropy i gazu przed korozją i osadzaniem się soli za pomocą połączonego zastosowania inhibitorów i wielofunkcyjnych inhibitorów
Autorzy:
Psiuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/300552.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
korozja
osadzanie się soli
gaz ziemny
ropa naftowa
inhibitor
złoża ropy naftowej i gazu ziemnego
wydobycie ropy i gazu
corrosion
saline deposition
gas
oil
oil and gas fields
oil and gas production
Opis:
This paper describes problems of inhibitor corrosion protection in oil and gas fields, main reasons of saline deposition in the processes of oil and gas production and technology of combined using of corrosion and saline deposition inhibitors (technology of using of inhibitors of multifunctional action) for protection of gas and oil field equipment against corrosion and saline deposition. In the paper on the basis of the results of laboratory researches has been showen high efficiency of multifunctional inhibitor "Korazol" and of the mixture of inhibitors KTI-C and TAL-3. The proposed technology consists of preparation of the solution of inhibitor of certain concentration and pumping of the prepared solution into the producing well (to annular space of the well).
W artykule opisano problemy związane z ochroną przeciwkorozyjną i przeciw osadzaniu się soli w warunkach produkcji ropy naftowej i gazu ziemnego za pomocą połączonego zastosowania inhibitorów korozji i osadzania (technologia wykorzystywania inhibitorów wielofunkcyjnych) do ochrony sprzętu stosowanego do produkcji ropy naftowej i gazu ziemnego przed korozją i osadzaniem się soli. Na podstawie wyników badań laboratoryjnych pokazano dużą skuteczność inhibitora wielofunkcyjnego "Korazol" oraz połączenia inhibitorów KTI-C oraz TAH-3. Zastosowana technologia polega na przygotowaniu roztworu inhibitora o określonym stężeniu i zatłoczeniu go do przestrzeni pierścieniowej otworu produkcyjnego.
Źródło:
Wiertnictwo, Nafta, Gaz; 2010, 27, 1--2; 349-354
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion behavior of Cr-Ni-Mo stainless steel in chemically modified chloride solution
Autorzy:
Zatkalíková, Viera
Markovičová, Lenka
Štrbák, Milan
Powiązania:
https://bibliotekanauki.pl/articles/34670831.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
austenitic stainless steel
pitting corrosion resistance
inorganic inhibitor
stal austenityczna nierdzewna
odporność na korozję wżerową
inhibitor nieorganiczny
Opis:
Cr-Ni-Mo stainless steels are susceptible to the pitting in aggressive chloride environments. One of the possible ways for the influence of their corrosion behavior is the use of inhibitors as the chemical modification of the environment. The resistance of AISI 316Ti stainless steel to the pitting with/without the inorganic inhibitor was tested by two independent corrosion tests: 24-hours exposure immersion and potentiodynamic polarization test. Both tests were carried out in 1M chloride acidic solution with/without 0.1M molybdate inhibitor at room temperature. Results of immersion tests were evaluated by the corrosion rates calculated from corrosion losses and by the morphology of the pitting. Potentiodynamic polarization curves were evaluated by the pitting potentials.
Źródło:
Quality Production Improvement - QPI; 2021, 3, 1; 299-304
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deployment of Antepsin (Sucralfate) as Corrosion Inhibitor of Mild Steel in H2SO4 Medium: Chemical and Electrochemical Studies
Autorzy:
Udeh, B. C.
Onukwuli, O. D.
Omotioma, M.
Powiązania:
https://bibliotekanauki.pl/articles/1839460.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antepsin
Corrosion
H2SO4
Inhibitor
Mild Steel
Opis:
This study presents the deployment of antepsin (sucralfate) as corrosion inhibitor of mild steel in H2SO4 medium. Chemical (gravimetric) and electrochemical (potentiodynamic polarization and electrochemical impedance spectroscopy) techniques were used in the corrosion control investigation. The antepsin drug was characterized by gas chromatography mass spectrophotometer (GCMS) and Fourier transform infrared (FTIR) spectroscopy. Effects of inhibitor concentration, temperature and time on weight loss, corrosion rate, inhibition efficiency and degree of surface coverage were examined. Thermodynamic and adsorption properties of the corrosion inhibition process were determined. Inhibition efficiency was optimized using central composite design tool of Design Expert software version 12. Potentiodynamic polarization and electrochemical impedance spectroscopy were employed to determine the type and effectiveness of the inhibitor. As a confirmatory test, scanning electron microscopy (SEM) was employed to examine the surface morphology of the mild steel samples. Analysis of the results showed that major constituents of antepsin include tetradecanoate, metronidazole, hexadecanoic acid, methyl ester and 11-octadecenoic acid. The predominant functional groups include; C=O stretch, C-H bend and symmetric and asymmetric =C-O-C. Adsorption of the molecules of antepsin on the surface of the mild steel was spontaneous and occurred in agreement with physical adsorption. A quadratic model adequately described the relationship between inhibition efficiency and corrosion control variables of concentration of the inhibitor, temperature and time. Optimum inhibition efficiency of antepsin was obtained as 86.75%. Chemical and electrochemical results agreed that antepsin is suitable for corrosion control of mild steel in H2SO4 solution. Antepsin acted as mixed-type inhibitor (controlled both cathodic and anodic reactions).
Źródło:
World News of Natural Sciences; 2021, 37; 117-134
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Green corrosion inhibitor for mild steel in 2 M HCl solution: Flavonoid extract of Erigeron floribundus
Autorzy:
Abeng, Fidelis Ebunta
Idim, Veronica David
Powiązania:
https://bibliotekanauki.pl/articles/1177856.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Erigeron floribundus
Flavonoid
Green inhibitor
corrosion
mild steel
Opis:
The potential of flavonoid extract of Erigeron floribundus as green inhibitor for the corrosion of mild steel in 2 M HCl solution was studied using gasometric method. The results obtained, indicated that the extract is an adsorption inhibitor for the corrosion of mild steel. The inhibition efficiency of the inhibitor was found to increased with increase in concentration of the inhibitor. From the observed trend for the variation of inhibition efficiency with temperature and the range of value obtained from activation energy (16.16-3.02 KJmol-1), enthalpy (13.5-38.84 KJmol-1), entropy (-22.67 to 88.44 KJmol-1) and free energy (-4.23 to -2.61 KJmol-1), a chemical and physical adsorption mechanism is propose for the adsorption of the inhibitor on the mild steel surface. In addition, the adsorption is endothermic, spontaneous and is best described by Langmuir adsorption isotherm.
Źródło:
World Scientific News; 2018, 98; 89-99
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact assessment of effectiveness of thiourea and THAM for corrosion process on carbon steel in calcium chloride environment
Autorzy:
Malinowski, S.
Jaroszyńska-Wolińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/390655.pdf
Data publikacji:
2016
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
corrosion inhibitor
thiourea
THAM
carbon steel
anticorrosive properties
Opis:
The main objective of this paper is to present a comparison of the corrosion inhibiting effect of thiourea and THAM (tri(hydroxymethyl)aminomethane) on carbon steel samples immersed in calcium chloride solutions. The testing has shown that to inhibit the corrosive action of the calcium chloride solution, the thiourea solution can be successfully replaced by the THAM solution. The study was performed with the use of st3s, structural and reinforcing steel. In the case of st3s steel samples, the application of the 0.01% THAM solution causes a decrease of its weight loss by about 60%. The application of a 10-times stronger THAM solution causes an increase of the corrosion inhibition on the tested samples by about 20%. A combined protective action of the thiourea and THAM solutions brings about an increase of the corrosion process inhibition by about 70% both for the st3s and the structural samples. The 0.01% and 0.1% THAM solutions applied to inhibit the corrosion process on structural samples cause an increase of the corrosion protection by about 50% and 15% respectively.
Źródło:
Budownictwo i Architektura; 2016, 15, 2; 65-72
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inhibition studies of Spondias mombin L. in 0.1 HCl solution on mild steel and verification of a new temperature coefficient of inhibition efficiency equation for adsorption mechanism elucidation
Autorzy:
Magu, T. O.
Bassey, V. M.
Nyong, B. E.
Obono, O. E.
Nzeata-Ibe, N. A.
Akakuru, O. U.
Powiązania:
https://bibliotekanauki.pl/articles/1118802.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Corrosion
Freundlich adsorption isotherm
Inhibition coefficient
Inhibitor
Spondias mombin
Opis:
This research investigated the inhibition behavior of Spondias mombin leaf (SML) extracts in 0.1 M HCl solution on mild steel at various concentrations and temperatures. The result reveals that the inhibition efficiency of the extract on the mild steel sheet increases with increasing concentration of the extract and decreases with increase in temperature. Therefore, the adsorption mechanism of the extract on the mild steel surface is physical. Calculated Correlation Coefficient (R2) values show that the process follows a Freundlich adsorption isotherm. The proposed temperature coefficient equation of adsorption mechanism was found to be appropriate.
Źródło:
World News of Natural Sciences; 2017, 8; 15-26
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innowacyjne inhibitory korozji do strumieni węglowodorowych w kopalniach ropy naftowej i w rafineriach
Innovative corrosion inhibitors for hydrocarbon streams in oilfields and refineries
Autorzy:
Gaździk, Barbara
Kempiński, Roman
Gaździk, Andrzej
Pomykała, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/1835062.pdf
Data publikacji:
2019
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
ropa naftowa
kopalnia
rafineria
inhibitor
korozja
crude oil
oil well
refinery
corrosion
Opis:
Korozja instalacji podczas procesu wydobycia i przeróbki ropy naftowej stwarza ogromny problem techniczny i ekonomiczny, dlatego stosowane są różne metody ochrony przed korozją, w tym wykorzystywanie inhibitorów korozji. W publikacji opisano przyczyny powstawania korozji oraz przemysłowe metody jej zapobiegania w kopalniach i rafineriach. Przedstawiono metody badań oraz wyniki badań laboratoryjnych inhibitorów korozji opracowanych w ramach projektu: Innowacyjne środki chemiczne z udziałem zmodyfikowanej imidazoliny dla przemysłu rafineryjnego, wydobywczego ropy naftowej, hutniczego i maszynowego, dofinansowanego ze środków Narodowego Centrum Badań i Rozwoju. Badania korozyjne wykonane według NACE 1D182 wykazały, że przy dozowaniu do mieszanki ropa–woda 25 mg/litr inhibitora korozji do dozowania ciągłego do odwiertów i ropociągów Pachem-CWR-1011 szybkość korozji płytek Steel Shimstock obniżyła się z wartości około 1,4 mm/rok do poniżej 0,05 mm/rok, poziom ochrony przed korozją wynosił 96,7%, a rozdział ropy od wody nastąpił w czasie do 15 minut. Badania skłonności do emulgowania według ASTM G 170-06, z udziałem tego inhibitora w ilości 50 mg/litr, wykazały, że do 15 minut zaobserwowano ostry rozdział ropy naftowej od wody. Badania, według NACE 1D182, inhibitora korozji do dozowania okresowego do odwiertów i ropociągów Pachem-CWR-1021 wykazały, że przy jego dozowaniu w I etapie – w celu wytworzenia powłoki ochronnej – w ilości 10 000 mg/litr mieszanki ropa–woda szybkość korozji płytek Steel Shimstock w II etapie obniżyła się do poniżej 0,05 mm/rok, a stopień ochrony przed korozją wynosił 98,60%. Po badaniu do 15 minut zaobserwowano wyraźny rozdział ropy naftowej od wody. Badania grubości warstwy wykazały, że Pachem-CWR-1021 tworzy powłokę ochronną o grubości około 20 mikrometrów. Przeprowadzono badania inhibitora Pachem-CR-1012 do dozowania w sposób ciągły do rur oparowych i orosień kolumn destylacyjnych w celu ochrony przed korozją kolumn destylacyjnych, układów kondensacyjnych i rurociągów na instalacji destylacji ruro- wo-wieżowej DRW. Badania według NACE 1D182 wykazały, że inhibitor przy dozowaniu 15 mg/litr benzyny ogranicza szybkość korozji z poziomu około 2 mm/rok do poniżej 0,01 mm/rok, a stopień ochrony przed korozją wynosi 99,8%. Inhibitor znakomicie przeciwdziała tworzeniu się emulsji – po badaniu uzyskano niezawodnioną, pozbawioną produktów korozji benzynę surową i czystą, pozbawioną węglowodorów wodę kondensacyjną.
Corrosion of installations during the process of oil production and processing creates a huge technical and economic problem, which is why various methods of corrosion protection are applied, including the use of corrosion inhibitors. The paper describes the causes of corrosion and industrial methods of its prevention in oilfields and refineries. The research methods and laboratory test results of corrosion inhibitors developed as part of the Project: Innovative chemicals with modified imidazoline for the refinery, oilfields, metallurgy and machinery industries, co-financed by the National Center for Research and Development. Corrosion tests (NACE 1D182) have shown that dosing the Pachem-CWR-1011 corrosion inhibitor for continuous injection to wells and pipelines to an oil/water mixture at 25 mg/liter, decreased the corrosion rate of Steel Shimstock plates from ca 1.4 mm/year to below 0.05 mm/year, and corrosion protection was 96.7%. Emulsification tendency evaluation (ASTM G 170-06) showed a sharp separation of crude oil and water phases within up to 15 minutes when 50 mg/liter of this inhibitor was used. Tests of the Pachem-CWR-1021 corrosion inhibitor for periodical injection to wells and pipelines showed that the rate of corrosion of Steel Shimstock plates, in the second stage, decreased to a level below 0.05 mm/year, and the degree of corrosion protection was 98.60% when a treat rate of 10,000 mg/liter of oil-water mixture was used in the first stage to produce a protective coating. After the tests, a clear separation of oil and water was observed within up to 15 minutes. The film layer thickness measurements showed that Pachem-CWR-1021 forms a protective film with a thickness of about 20 micrometers. Corrosion inhibitor PachemCR-1012 for continuous dosing into the vapor pipes and refractory distillation columns to protect against corrosion of the installation on the CDU plant was also tested. The NACE 1D182 tests have shown that the inhibitor, dosed at the rate of 15 mg/liter of gasoline reduces the corrosion rate from 2 mm/year to below 0.01 mm/year, and the degree of corrosion protection is 99.8%. The inhibitor is excellent in protecting against the formation of emulsions – after the test, a non-watery crude oil free corrosion products and clear condensation water free of hydrocarbons were obtained.
Źródło:
Nafta-Gaz; 2019, 75, 6; 356-372
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating the extract constituents and corrosion inhibiting ability of Sida acuta leaves
Autorzy:
Adindu Chinonso, B.
Oguzie Emeka, E.
Powiązania:
https://bibliotekanauki.pl/articles/1113826.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sida acuta
chemical constituents
corrosion
inhibitor
mild steel
Opis:
Constituents of the ethanol extract of Sida acuta (SA) leaves were investigated by phytochemical, GC-MS and FTIR studies and its corrosion inhibition effects on mild steel was studied in 1 M HCl and 0.5 M H2SO4 solutions, using gravimetric and electrochemical methods of corrosion monitoring. The surface morphology of the mild steel surface before and after corrosion was also assessed using SEM imaging. The phytochemical, GC-MS and FTIR results revealed that SA contains carbonyl groups, aromatic rings, and double bonds that make it a prospective corrosion inhibitor for mild steel. Moreover, gravimetric results indicated that SA is an effective additive for the corrosion of mild steel at all the concentrations studied. Finally, the electrochemical results showed that SA inhibited both the anodic and cathodic half reactions by the adsorption of the extract constituents on the mild steel surface; this was further confirmed by the SEM investigations.
Źródło:
World News of Natural Sciences; 2017, 13; 63-81
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Corrosion Inhibitors by Nuclear Quadrupole Resonance Relaxometry Method
Autorzy:
Sinyavsky, N. Y.
Mershiev, I. G.
Korneva, I. P.
Powiązania:
https://bibliotekanauki.pl/articles/117155.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
corrosion inhibitor
Nuclear Quadrupole Resonance (NQR)
nuclear magnetic resonance (NMR)
Regularized Inverse Laplace Transform (RILT)
Inhibition
corrosion
Relaxation Time Distribution
Nuclear Magnetization Diffusion
Opis:
The changes taking place with the corrosion-resistant coating, but not the state of the surface subjected to corrosion are investigated in this paper in contrast to traditional approaches. We used the method of nitrogen relaxometry NQR and multi-exponential inversion of decay of longitudinal and transverse components of the nuclear magnetization is applied for the first time for this purpose. The results of experimental studies of changes in the distributions of spin-spin and spin-lattice relaxation of crystallite powder of sodium nitrite and urotropin, the mixture of which is used as a corrosion inhibitor of ferrous metals are considered.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 4; 587-590
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the inhibitory-bactericidal effect of amidoamine-based inorganic complexes against microbiological and atmospheric corrosion
Autorzy:
Aghazada, Y.J.
Abbasov, V.M.
Mursalov, N.I.
Abdullayev, S.E.
Yolchuyeva, U.J.
Powiązania:
https://bibliotekanauki.pl/articles/778541.pdf
Data publikacji:
2020
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
corrosion
inhibitor
bactericide
adsorption
amidoamine
Opis:
In the process, inorganic complexes of amidoamines obtained from the interaction of natural petroleum acid and oleic acids with diethylenetriamine have been developed and their effectiveness as inhibitor-bactericides has been investigated. The effect of the synthesized reagents on the kinetics of the corrosion process of steel and the activity of sulphate-reducing bacteria in 3% NaCl solution saturated with CO2 and in the biphasic water–isopropyl alcohol medium with H2S dissolved has been analyzed. The thermodynamic and kinetic parameters of the corrosion process were calculated. The adsorption of the complexes was investigated using the Langmuir isotherm and the correlation constant was determined. State of the metal surface was investigated by SEM method in CO2 and H2S media, with and without inhibitors, and the metal surface contact of complexes was studied by computer molecular simulation.
Źródło:
Polish Journal of Chemical Technology; 2020, 22, 3; 29-37
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on Corrosion Inhibition of Hura Crepitans for 2101 Duplex Stainless Steel in an Acidic Environment
Autorzy:
Temitayo, Ogunmodede O.
Vawe, Humwapwa
Johnson, Jonathan
Adewole, Ezekie
Ilesanmi, Osasona
Powiązania:
https://bibliotekanauki.pl/articles/2201784.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
corrosion
steel
Hura crepitans
inhibitor
sulphuric acid
Opis:
Corrosion is a global menace which has imparted the world economy greatly. One of the solutions proffered to these challenges is the use of inhibitors. Several natural inhibitors have been used to protect engineering materials from corroding. This research is focused on investigating the inhibitive properties of Hura crepitans seed (HCS) on Duplex Stainless Steel 2101 (DSS2101) in H2SO4. The selected plant part was subjected to characterization to determine the presence of organic anti-corrosion agents present. From the result, phytochemicals such as saponin, tannins, steroid and flavonoids were observed. The presence of the organic group accounted for the inhibitive efficiency recorded in the environment. The polarization studies revealed that generally the inhibitor produced from seed extract of Hura crepitans, improved the corrosion resistance of DSS2101 in 0.5M H2SO4. The optimum corrosion inhibitor efficiency was observed at 0.2% inhibitors in 0.5M H2SO4 for 2101DSS.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 4; 56--63
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Olej ochronny o niskiej lepkości do czasowej ochrony elementów metalowych przed korozją
Low viscosity protective oil for temporary protection of metal components against corrosion
Autorzy:
Ziółkowska, Monika
Frydrych, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/1833974.pdf
Data publikacji:
2020
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
korozja
olej ochronny
czasowa ochrona
lepkość
elementy metalowe
inhibitor korozji
corrosion
protective oil
temporary protection
viscosity
metal components
corrosion inhibitor
Opis:
Corrosion of metals is the gradual destruction of metal under the impact of environmental factors. Chemical or electrochemical processes on the surface of the metal cause irreversible changes in the structure of the metal. To prevent this, during storage or transport, the surfaces of metal elements must be protected against environmental factors, which include: high air humidity, acid rain and variable temperature. These factors accelerate the corrosion process, which cannot be eliminated, but can be reduced by protecting metal elements with e.g. protective oils. Some metals have the ability to passivate, which is a natural protective agent that prevents corrosion. It consists in the formation of an oxide of this metal on the metal surface. Where there is no natural protection against corrosion, protective measures must be used. This paper presents the technology for the production of protective oil for temporary protection against corrosion. The innovation of this project is that the oil will form a thin, well adhering protective layer on the metal surface, which can be easily removed. It is characterised by very low viscosity and low dripping time. It is possible to achieve by using proper base oil with carefully selected anti-corrosion additives. Based on the standard PN-75/C-04154 Petroleum products. Rust protection by metal preservatives the humidity cabinet test method, corrosion tests were carried out. The paper presents the results of a humidity cabinet test for an oil mixture based on deeply refined base oil and properly selected refining additives. The test results confirmed very good anti-corrosive properties of the developed oil due to the use of a corrosion inhibitor and an oxidation inhibitor. The thickness of the protective layer formed on the metal surface was calculated based on a mathematical formula. The resulting layer forms a thin oil film, easy to remove and protecting the metal surface from corrosion.
Źródło:
Nafta-Gaz; 2020, 76, 11; 864--869
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies