Temat: acid corrosion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Kinetics of Corrosion Process in H2SO4 and HNO3 Aqueous Solutions of Lead Free Sn-Ag-Cu Solder Alloys
Autorzy:: Guśpiel, J.
Wierzbicka-Miernik, A.
Reczyński, W.
Powiązania:: https://bibliotekanauki.pl/articles/352914.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electronic materials
polarization
acid corrosion
Opis:: This paper presents the results of the corrosion resistance of Sn-Ag-Cu alloys in air-saturated aqueous solutions containing NO₃^-, SO₄^2- ions, whose concentration was equivalent to their contents in acid rains and in concentrations 10 - 100 times higher. The Ag, Cu and Sn concentrations in the corrosive media were determined using the Atomic Absorption Spectrometry. The specific dissolution rate and corrosion current were derived using the a rotating disc technique. The corrosion rate of Sn- Ag-Cu alloys depends on pH of the examined solutions and on the concentration of oxygen near the phase boundary. In the whole range of concentrations of the applied H₂SO₄ + HNO₃ mixtures of acids, the pure Sn was more corrosion resistant than eutectic alloy as well as the near eutectic one, following the sequence: Sn>Sn3.66Ag0.91Cu>3.8Ag0.7Cu.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2A; 559-568
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

Tytuł:: Characterization and Optimization study of Epiphyllum oxypetalum extract as corrosion inhibitor for mild steel in 3 M H2SO4 solutions
Autorzy:: Emembolu, L. N.
Onukwuli, O. D.
Okafor, V. N.
Powiązania:: https://bibliotekanauki.pl/articles/1030954.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Acid corrosion
Epiphyllum oxypetalum extract
Optimization
Photochemical
Response Surface Methodology
Opis:: This study investigated characterization of Epiphyllum oxypetalum (EO) leaf extracts and optimization of process variables on inhibition of mild-steel in 3 M H2SO4 aggressive environment. Response Surface Methodology (RSM) was employed to examine the influence of process variables namely acid concentration (1.0 – 3.0 mols), inhibitor concentration (0.2 – 1.0 g/l), time (1–10 hr) and temperature (303 -343K) on inhibition efficiency. The results of phytochemical screening showed that organic components present in EO extract as a good inhibitor. Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM) studies established the presence of active compounds and adsorption of leaf extracts on metal surface. The experimental data was statistically analyzed and regression equations for corrosion rate and inhibition efficiency generated. The optimum conditions were achieved at acid concentration of 1.00 mol, inhibitor concentration of 0.055 g/l temperature of 333K, and time of 2.750 hr. The optimization results revealed that inhibition efficiency of 82.93 % was obtained at optimum combination of the extract concentration, the acid concentration, the temperature and the immersion time. The inhibitive potentials of EO extract was found to impede the localized and uniform corrosion of mild steel in acidic media, showing that the Epiphyllum oxypetalum leaf extract is a good inhibitor for mild steel in acidic solutions.
Źródło:: World Scientific News; 2020, 145; 256-273
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Corrosion inhibition of mild steel in HCl solution by Tinidazole
Autorzy:: Reza, I.
Saleemi, A.R.
Naveed, S.
Powiązania:: https://bibliotekanauki.pl/articles/779380.pdf
Data publikacji:: 2011
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: korozja kwasowa
stal miękka
polaryzacja
tynidazol
acid corrosion
mild steel
polarization
EIS
tinidazole
Opis:: Tinidazole, a pharmaceutical compound has been investigated with reference to the inhibition of mild steel acidic corrosion in 1 molar HCl by means of weight loss and electrochemical measurements. The outcomes attained at 30°C revealed that the Tinidazole had obtained 90% inhibition efficiency at 400 ppm concentration. These results explain that the inhibition process occurs by means of adsorption. The inhibitor molecules adsorb on the surface of the metal, following Langmuir's adsorption isotherm. Potentiodynamic polarization measurements established that Tinidazole is an inhibitor of a mixed type. An appropriate equivalent electric circuit for modeling and the analysis of impedance data to give a better explanation of the process of corrosion inhibition have been proposed.
Źródło:: Polish Journal of Chemical Technology; 2011, 13, 1; 67-71
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Odporność zapraw z udziałem popiołów lotnych z kotłów fluidalnych i konwencjonalnych na korozję kwasową
The resistance of mortars with fluidized beds boiler fly ashes and conventional fly ashes to acid corrosion
Autorzy:: Janowska-Renkas, E.
Kowalska, J.
Kaliciak, A.
Janus, G.
Powiązania:: https://bibliotekanauki.pl/articles/131481.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:: popioły lotne ze spalania w kotłach fluidalnych
popioły lotne z kotłów konwencjonalnych
korozja kwasowa
trwałość zapraw
fly ashes
fluidized boiler
conventional boiler
acid corrosion
durability of cement mortars
Opis:: This paper presents the results of research undertaken to determine the impact of the aggressive environment of acid corrosion on the durability of cement mortars with the participation of fluidized beds boiler fly ashes and conventional fly ashes used separately and in the form of mixtures. The beneficial effect of fluidized beds boiler fly ashes on the physical properties of cement mortars has been shown, i.e. reduction of the contraction, decrease of weight loss and reduction of the destruction of mortars in acid corrosion. This effect was especially beneficial for mortars containing higher (45% by weight) content of fluidized fly ashes, used separately and in the form of mixtures, regardless of the aggressiveness of the environment (1%, 3% and 5% HCl solution).
Źródło:: Roczniki Inżynierii Budowlanej; 2016, 16; 101-109
1505-8425
Pojawia się w:: Roczniki Inżynierii Budowlanej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Badania skuteczności działania inhibitorów korozji dla wytypowanych odmian stali w środowisku cieczy kwasującej
The research on efficiency of corrosion inhibitors for selected types of steel in the acid environment
Autorzy:: Fabia, B.
Bielewicz, D.
Stachowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/299499.pdf
Data publikacji:: 2011
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: inhibitory korozji
korozja
kwasowanie
corrosion
corrosion inhibitors
acid treatment
Opis:: Powszechnie stosowaną metodą intensyfikacji wydobycia węglowodorów jest kwasowanie odwiertów. Kwasowanie wiąże się z korozją rur wydobywczych i eksploatacyjnych. Celem badań było określenie skuteczności czterech inhibitorów korozji: ACI 130A, AI 600, Antykor PP, SAFE-COR stosowanych w przemyśle oraz Inhibitora PPT powstałego na Wydziale Wiertnictwa, Nafty i Gazu AGH. Badania przeprowadzono w temperaturze 20 stopni Celsjusza i 60 stopni Celsjusza na próbkach stali w pięciu odmianach wytrzymałościowych (według nomenklatury API oznaczonych jako J-55, K-55, L-80, N-80 oraz P-110). Wytypowano najbardziej skuteczne inhibitory korozji oraz najbardziej odporne odmian stali jako materiału wykorzystywanego w rurach wydobywczych i eksploatacyjnych.
The most commonly used method in intensification of hydrocarbon production is acid treatment. It is connected with corrosion of production pipes. The aim of the research was to determine effectiveness of four corrosion inhibitors: ACI 130A, AI 600, Antykor PP, SAFE-COR which are used in the industry and Inhibitor PPT which was created on the Faculty of Drilling, Oil and Gas, at the AGH University of Science and Technology. The research was conducted on temperature of 20 degrees of Celsius (293.15 K) and 60 degrees of Celsius (333.15 K) on five samples of different types of steel strength (according to nomenclature API: J-55, K-55, L-80, N-80 and P-110). The most effective inhibitors and the most resistant types of steel were selected as materials in production of production pipes.
Źródło:: Wiertnictwo, Nafta, Gaz; 2011, 28, 4; 661-670
1507-0042
Pojawia się w:: Wiertnictwo, Nafta, Gaz
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Inhibition of Brass Corrosion in Acid Medium Using Thiazoles
Autorzy:: Taha, K. K.
Mohamed, M. E.
Khalil, S. A.
Talab, S. A.
Powiązania:: https://bibliotekanauki.pl/articles/411634.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Benzothiazoles
Brass Corrosion Inhibitors
Perchloric Acid
Opis:: Brass as an alloy composed mainly of copper is great industrial uses such as heat exchangers and similar other facility due to its good thermal properties. Due to the presence of the considerable ratio of zinc the alloy suffers from zinc dissolution or dezincification. Dezincification rate increases with the increase in the ratio of zinc in the alloy. In this study benzothiazole (BTH) and its substituent’s 2-methylbenzothiazole (MeBTH), 2-aminobenzothiazole (ABTH), 2-mercaptobenzothiazole (MBTH) and 2-phenylbenzothiazole (PhBTH) have been used as corrosion inhibitors for α-brass in stirred 0.1 M HClO4. The methods of investigation include weight loss, Tafel and linear polarizations and electrochemical impedance spectroscopy. The order of inhibition efficiency (% E) was calculated and the values obtained has indicated the sequence of inhibition efficiency was found to be BTH < MeBTH < ABTH < PhBTH < MBTH. The calculated values of thermodynamic parameters support this order. The inhibitors were found to suppress the corrosion rate by the formation of films which were identified by IR, SEM and EDAX techniques.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 9, 2; 87-102
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

Tytuł:: Citric Acid as an Eco-Friendly Inhibitor for the EN AW-2024 Aluminum Alloy Corrosion in Acidic Medium
Autorzy:: Kamarska, Kalina
Powiązania:: https://bibliotekanauki.pl/articles/2202340.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: corrosion inhibition
aluminum alloy
citric acid
electrochemical technique
Opis:: The paper presents the results from a study on the possibility to use citric acid as an ecological inhibitor of corrosion in aluminum alloy EN AW-2024 in 0.5 М solution of H2SO4. The study has been carried out by using electrochemical techniques, such as open circuit potential and chronoamperometry. The results reveal that the presence of citric acid in the studied acid medium reduces the corrosion degree of the EN AW-2024 aluminum alloy. The inhibition efficiency increases together with increasing the concentration of the citric acid. The study shows that the citric acid can be used as an ecological inhibitor to fight corrosion in a solution of H2SO4.
Źródło:: Journal of Ecological Engineering; 2023, 24, 1; 307--311
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Effects of Nicotiana Tobaccum Extract Additive on the Quality of Electroplating of Zinc on Mild Steel
Autorzy:: Loto, C.A.
Loto, R.T.
Powiązania:: https://bibliotekanauki.pl/articles/779362.pdf
Data publikacji:: 2013
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: electrodeposition
tobacco
steel surface
acid chloride solution
corrosion
Opis:: Experimental investigations have been performed to determine the effects of nicotiana tobaccum (tobacco) extract additive on the electrodeposition of zinc on mild steel in acid chloride solution. The experiments were performed under different plating time, different additive concentrations and fixed pH conditions. Zinc electrodeposition on mild steel was performed using a DC - supply at defined operating parameters. The surface of the plated steel was examined using scanning electron microscopy (SEM); and Energy Dispersive Spectroscopy (EDS) for the surface elemental composition analysis. Different surface characteristics were obtained depending upon the concentration of the additive and the plating time. The corrosion resistance of the plated surface was also determined by a gravimetric method. The quality of the electro-deposition of zinc was good as indicated by the microstructural morphology of the plated surface except for the few porosities observed. The electrodeposition process was sensitive to the changes in the additive concentration and plating time. Any variation in the plating parameter produced an entirely new and different surface morphology.
Źródło:: Polish Journal of Chemical Technology; 2013, 15, 1; 37-45
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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