Investigation of oxide films on ferritic stainless steel

1991 ◽  
Vol 341 (5-6) ◽  
pp. 427-431 ◽  
Author(s):  
A. Freiburg ◽  
W. J�ger ◽  
J. Fl�gge
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Oxide Films

scholarly journals Optical spectroscopic and electrochemical characterization of oxide films on a ferritic stainless steel

2020 ◽  
Vol 71 (3) ◽  
pp. 440-450 ◽  
Author(s):  
Changfeng Fan ◽  
Jianmin Shi ◽  
Azat Sharafeev ◽  
Peter Lemmens ◽  
Klaus Dilger
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Oxide Films ◽  
Electrochemical Characterization

Determination of Oxygen Diffusion Coefficient in Oxidation Films of the AISI 439 Ferritic Stainless Steel

2012 ◽  
Vol 323-325 ◽  
pp. 339-344 ◽  
Author(s):  
Antônio Claret Soares Sabioni ◽  
Emiliane Advíncula Malheiros ◽  
Vincent Ji ◽  
François Jomard
Keyword(s):  
Stainless Steel ◽  
Diffusion Coefficient ◽  
Oxide Film ◽  
Ferritic Stainless Steel ◽  
Oxygen Diffusion ◽  
Oxide Films ◽  
Ion Diffusion ◽  
Exchange Method ◽  
Oxygen Ion ◽  
Oxygen Ion Diffusion

In order to investigate the role of oxygen diffusion in the oxidation process of the AISI 439 ferritic stainless steel, oxygen ion diffusion coefficients were determined, for the first time, in oxide films formed by the oxidation of this steel. Steel samples were firstly oxidized from 750oC to 900oC, in synthetic air, in order to grow oxide films mainly made up of chrome oxide; the oxygen diffusion experiments were then performed using the stable isotope18O as oxygen tracer. The introduction of the18O in the oxide film was performed by means of the gas-solid isotopic exchange method, in the temperature range of 750-900oC, in Ar+21%18O2atmosphere. The18O diffusion profiles were established by secondary ion mass spectrometry (SIMS). Parabolic oxidation constants calculated by means of Wagner´s theory, using the oxygen ion diffusion coefficient determined by our experimental process, are greater than oxidation constants previously determined in oxidation experiments from 850 to 950º C, in air, which indicates that the oxygen ion diffusion is large enough to assure the growth rate of the oxide film formed by the oxidation of the AISI 439 steel in these temperatures.

Microstructures and Hardness of CO2 Laser Welds in 409L Ferritic Stainless Steel

2010 ◽  
Vol 48 (04) ◽  
pp. 297-304 ◽  
Author(s):  
Jong Pan Kong ◽  
Tae Jun Park ◽  
Hye Sung Na ◽  
Jeong Kil Kim ◽  
Sang Ho Uhm ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Co2 Laser ◽  
Laser Welds

Effect of the Heat Input on the Tensile Properties in Arc Brazing of Ferritic Stainless Steel using Cu-Si Insert Alloy

2010 ◽  
Vol 48 (04) ◽  
pp. 289-296 ◽  
Author(s):  
Myung-Bok Kim ◽  
Sang-Ju Kim ◽  
Bong-Keun Lee ◽  
Xinjian Yuan ◽  
Byoung-Hyun Yoon ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Tensile Properties ◽  
Ferritic Stainless Steel ◽  
Heat Input

ATI 409HP

Alloy Digest ◽  
2013 ◽  
Vol 62 (2) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Carbon Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Ferritic Stainless Steel ◽  
Temperature Performance ◽  
End Use ◽  
Oxidation And Corrosion

Abstract ATI 409HP (UNS S40900) ferritic stainless steel was introduced by ATI Allegheny Ludlum to provide improved oxidation and corrosion resistance for automotive exhaust systems in comparison to carbon steel. The alloy was designated "MF-1", indicating its end use: automotive mufflers. The good fabricability of this alloy, combined with its basic corrosion resistance and economy have significantly broadened the utility of ATI 409HP stainless steel. ATI 409HP consists of four grades: UNS S40900, S40910, S40920, and S40930. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, machining, and joining. Filing Code: SS-1135. Producer or source: Allegheny Technologies Inc..

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