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Wyświetlanie 1-10 z 41
Tytuł:
Selected Cyclic Corrosion Tests in Automotive Industry
Autorzy:
Biało, Ł.
Grodniewicz, T.
Żabiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/354042.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
corrosion test
automotive
aluminum
heat exchanger
corrosion products
Opis:
Corrosion is a main problem for longtime exploration of heat exchangers in automotive industry. Proper selection of accelerated corrosion test for newly developed material is a key aspect for aluminum industry. The selection of material based on corrosion test includes test duration, chemical spray composition, temperature and number of cycles. The paper present comparison of old and newly developed accelerated corrosion tests for testing automotive heat exchanger. The accelerated test results are comprised with heat exchanger taken from market after life cycle.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 4; 1469-1476
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of the Process Parameters on the Microstructure and Properties SLM Processed 316L Stainless Steel
Autorzy:
Woźniak, A.
Adamiak, M.
Chladek, G.
Kasperski, J.
Powiązania:
https://bibliotekanauki.pl/articles/351734.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
SLM
316L stainless steel
corrosion test
wettability
Opis:
Selective Laser Melting (SLM) is a modern manufacturing method with many applications in medicine, aerospace and auto-motive industries. SLM processed materials are characterized by good dimensional accuracy and properties comparable or superior to materials obtained by traditional processing methods. In this paper an SLM process was used to obtain 316L stainless steel parts. This paper presents the microstructure, chemical and phase composition, physicochemical and electrochemical properties of 12 groups of tested samples, differentiated by the SLM processing parameters. Based on the investigation, it can be inferred that the selection of the appropriate SLM parameters is very important to determined final material properties. The samples producedwith the energy density E = 600 J/mm3 were observed to possess optimum properties - a homogeneous structure, density closest to the desired one, good wettability and pitting corrosion resistance.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 1; 73-80
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Opracowanie stanowiska do przeprowadzenia testów korozyjnych
The laboratory research stand for the corrosion tests
Autorzy:
Szczucka-Lasota, B.
Powiązania:
https://bibliotekanauki.pl/articles/271305.pdf
Data publikacji:
2014
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
korozja wysokotemperaturowa
powłoki ochronne
testy korozyjne
high temperature corrosion
protection coatings
corrosion test
Opis:
W artykule przedstawiono nowo opracowane laboratoryjne stanowisko badawcze przeznaczone do badań korozyjnych, które składa się z pieca grzewczego L/05/12, precyzyjnej wagi laboratoryjnej PS 210/C/2 oraz programatora. Zaprezentowano możliwości badawcze stanowiska oraz wybrane wyniki badań wysokotemperaturowych testów korozyjnych materiałów powłokowych.
The new elaborated laboratory research stand for the corrosion tests was presented. The furnace L/05/12 and the laboratory precision Libra PS 210/C/2 for the basie construction of the stand are used. The research capabilities of the stand and the selected investigation results of experimental high temperature corrosion tests of the chosen corrosion resistance coatings were presented.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2014, 19, 4; 303-308
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical Properties of Oxide ZrO2 Layer Deposited by Sol-Gel Method on Ti-6Al-7Nb Alloy
Autorzy:
Woźniak, A.
Ziębowicz, B.
Ziębowicz, A.
Walke, W.
Powiązania:
https://bibliotekanauki.pl/articles/353184.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Titanium alloy
Sol-gel method
ZrO2 layer
Corrosion test
AFM
Opis:
The paper contains the results of the initial surface treatment influence on the properties of the medical Ti-6Al-7Nb alloy with a modified zirconium oxide layer deposited on its surface by sol-gel method. In the paper, the analysis of results of potentiodynamic studies is presented as well as its resistance to pitting corrosion and electrochemical impedance spectroscopy (EIS), macroscopic observation of the surface of samples and analysis of geometrical structure with the use Atomic Force Microscope (AFM) were performed. The studies were performed on two groups of samples depending on the graduation of the sand used in sandblasted process – 50 μm and 250 μm. Based on the obtained results it can be concluded that the type of the initial surface treatment preceding the surface modification of the Ti-6Al-7Nb has a significant effect on its properties.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1209-1215
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of metal corrosion in wood treated with new-generation water-borne preservatives
Autorzy:
Can, Ahmet
Sivrikaya, Hüseyin
Taşcioğlu, Cihat
Powiązania:
https://bibliotekanauki.pl/articles/342791.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
alkaline copper quaternary (ACQ)
boric acid (BA)
micronized copper quaternary (MCQ)
nano boron (NB)
corrosion test
Opis:
In this study, the corrosion performances of ammonium copper quaternary (ACQ) and boric acid (BA) wood preservatives were investigated, with micronized copper quaternary (MCQ) and nano boron (NB) used as reference materials. In the study, Scots pine (Pinus sylvestris L.) wood samples were impregnated according to the full-cell process method with ACQ at 2.4% concentration, BA at 4% and MCQ and NB at 1%. The ACQ- and BA-impregnated samples were then impregnated for a second time using five different water-repellent materials: tall oil, linseed oil, sodium silicate, methyl hydrogen silicone and N'-N-(1,8- naphthalyl)hydroxylamine. Polyethylene glycol (PEG) 600 and aluminum sulfate were introduced as single impregnations in the form of homogeneous mixtures with ACQ and BA. The corrosion properties of the impregnated and control samples, including metal weight loss (MWL) and corrosion depth, were examined. The MWL values of the ACQ-impregnated samples showed an increase compared to the control group. The MWL values of the MCQ-impregnated samples were lower than those of the samples impregnated with ACQ, whilst the MWL values of the BA-impregnated samples were higher than those of the samples impregnated with NB.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 62, 205; 59-68
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiar szybkości przenikania tlenu przez ścianki rur z tworzyw sztucznych
Measurement of oxygen permeability rate through thermoplastic pipes walls
Autorzy:
Rutkiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/183088.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniki Budowlanej
Tematy:
rura tworzywowa
instalacja grzewcza
stanowisko badawcze
przenikanie tlenu
szybkość przenikania
rura wielowarstwowa
metoda pomiaru
badanie korozyjne
wyniki badań
thermoplastic pipe
heating system
test stand
oxygen permeability
permeability rate
multilayer pipe
test method
corrosion test
tests results
Opis:
Rury z tworzyw sztucznych mogą być stosowane w instalacjach ogrzewczych pod warunkiem posiadania w swojej strukturze warstwy barierowej, zabezpieczającej skutecznie przed dyfuzją tlenu, zapewniając w ten sposób ochronę stalowych elementów instalacji przed korozją. W artykule opisano budowę nowego stanowiska badawczego oraz metodę pomiaru szybkości przenikania tlenu przez ścianki rur wielowarstwowych w całym zakresie temperatur pracy instalacji ogrzewczych. Wyniki badań wykonanych w tym stanowisku wykazały, że duża część rur z tworzyw sztucznych stosowanych w Polsce w instalacjach ogrzewczych nie jest w dostatecznym stopniu zabezpieczona przed dyfuzją tlenu.
Thermoplastic pipe may be used in the heating systems only if it is produced with additional layer which forms oxygen barrier, protecting against oxygen diffusion and hence, against corrosion of steel. The paper describes the structure of new test stand and the test method for measuring the rate of permeability of oxygen through the wall of multilayer pipes at all temperatures occurring in heating systems. Results of tests show that in Poland a big part of thermoplastic pipes used in heating systems is not properly protected against oxygen diffusion.
Źródło:
Prace Instytutu Techniki Budowlanej; 2009, R. 38, nr 2, 2; 23-30
0138-0796
Pojawia się w:
Prace Instytutu Techniki Budowlanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of seawater salinity on corrosion of austenitic steel
Autorzy:
Starosta, Robert
Powiązania:
https://bibliotekanauki.pl/articles/245480.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
austenitic steel
corrosion
potetiodynamic test
seawater
Opis:
Due to the paramagnetic properties and the ability to passivation, for the production of hulls of some vessels (mainly warships), corrosion-resistant (stainless) steels with austenitic structure are used. This article describes the influence of seawater salinity on selected corrosion properties of high-alloy steel X5CrNi 18-10 (304). The average salinity of the seas is taken as 3.5% content of sodium chloride. Corrosion rate of the tested material was evaluated in an aqueous solution of sodium chloride was evaluated. The NaCl concentration in corrosive solutions was 0.7%, 1.4%, 2.1%, 2.8%, 3.5%, 4.2%. Corrosion tests were performed using the potentiodynamic method. The range of electrochemical potential changes was Ecorr ±150 mV. Corrosion rate was assessed on the basis of corrosion current density measurements. Corrosion potential values against the saturated calomel electrode were also determined. Based on the obtained measurement results and non-parametric significance tests carried out, a significant influence of seawater salinity on the value of corrosion current density and corrosion potential was found. The highest value of corrosion current density (jcorr), and thus the highest corrosion rate, was recorded for 3.5% NaCl solution. In the concentration range from 0.7 to 3.5% NaCl in solution, the corrosion rate of austenitic steel increases. A further increase in salinity of electrolyte results in the inhibition of corrosion rate of steel. There is almost a full negative, linear correlation between the proportion of sodium chloride in the corrosive solution and the value of corrosion potential. Along with the rise in the salinity of seawater, increase the electrochemical activity, and thus the corrosion susceptibility, thus the corrosion susceptibility, of the austenitic steel X5CrNi 18-10 was observed.
Źródło:
Journal of KONES; 2019, 26, 3; 219-225
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BIA, DPA, MBTA and DMA as Vapour Phase Corrosion Inhibitors for Mild Steel under different Atmospheric Conditions
Autorzy:
Kumar, H.
Yadav, V.
Powiązania:
https://bibliotekanauki.pl/articles/412519.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Mild steel
Atmospheric corrosion
vapor phase corrosion inhibitors
Eschke Test
Opis:
Mild steel is widely used as main raw material in fabrication of equipment, chief material of construction and as weapons. During its storage and transportation conditions, it comes in contact with aggressive environment which leads to decrease in mechanical strength and loss in useful properties. Four different vapor phase corrosion inhibitors (VPCIs) i.e. Benzaimidazole (BIA), Diphenyl amine (DPA), 2-mercapto benzothiazole (MBTA) and N,N-dimethyl aniline (DMA) were tested under different atmospheric conditions at 40 °C by Weight Loss, Eschke test, Salt Spray, SO2 test and SEM techniques. All the four VPCIs show good corrosion inhibition efficiency i.e. 65-96 %. The results obtained from all the four corrosion experiments were supported by SEM images.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 1; 52-66
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NSS test of structural steel corrosion
Autorzy:
Odrobiňák, J.
Gocál, J.
Jošt, J.
Powiązania:
https://bibliotekanauki.pl/articles/131677.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:
corrosion of steel
neutral salt spray test
corrosion rate
korozja stali
test neutralnego natryskiwania solą
szybkość korozji
Opis:
Corrosion of structural steel represents one of the most significant degradation effects on the reliability and durability of steel bridges. Relevant data needed for good protection of steel structures can only be reliably derived from long-term measurements. For acceleration of corrosion process, measurement in the corrosion chambers can be utilised. The article summarized the results of experimental measurements of corrosion losses carried out on 30 specimens of structural steel corrosion in the test chamber during 140 days. The environment in the chamber simulates the conditions in which, generally, several-day period in the chamber corresponds to either months or even years of outdoor exploitation. Discussion focused on the results interpretation to corrosion progress in real conditions is given, as well. The obtained measurement data should be used to refine the input data for corrosion maps in Slovakia. The presented results are part of a research project focused on measuring corrosive losses of structural steel in situ and as well as in laboratory conditions.
Źródło:
Roczniki Inżynierii Budowlanej; 2017, 17; 7-14
1505-8425
Pojawia się w:
Roczniki Inżynierii Budowlanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of seawater salinity on corrosion of hull structural steel
Autorzy:
Zagożdżon, Paweł
Starosta, Robert
Powiązania:
https://bibliotekanauki.pl/articles/241977.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hull structural steel
corrosion
potentiodynamic test
seawater
Opis:
Hulls of ships are often made of steel, which are produced under the supervision of classification societies. Usually, the hull steel of ordinary strength category A is used for the ship's shell (the yield strength is 235 MPa and the impact strength 27 J at 20ºC). Vessels sail in sea areas with various levels of salinity and thus with different corrosiveness. The average salinity of the seas is taken as 3.5% content of sodium chloride. This article presents the results of corrosion tests of S235 JRG1 steel in an aqueous solution in which the mass fraction of sodium chloride was: 0.7%, 1.4%, 2.2%, 2.8%, 3.5% and 4.2%. Corrosion tests were performed using the potentiodynamic method. As parameters characterizing the corrosion properties of the tested steel, the corrosion current density and corrosion potential were assumed. Statistically significant influence of seawater salinity on the corrosion properties of hull structural steel of ordinary strength of category A was found. The highest value of the corrosion current density was observed in the solution containing 3.5% NaCl mass fraction was observed. In seawater with a sodium chloride content in the range of 0.7 to 3.5%, an increase in the value of the corrosion current density was observed, along with the increasing share of NaCl. In seawater with higher salinity, the corrosion rate was reduced. The corrosion potential of S235JRG1 steel decreases with the NaCl content in the corrosive solution. The susceptibility of this material to corrosion in seawater increased.
Źródło:
Journal of KONES; 2019, 26, 2; 189-195
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 41

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