Title of article :
The study of Oxidation Behavior of AISI 439 Steel at the Presence of Manganese Oxides for the Application in Solid Oxide Fuel Cells
Author/Authors :
Limooei, Mohammad Bagher Department of Materials Science and Engineering - Ayatollah Amoli Branch Islamic Azad University , Ebrahimifar, Hadi Departinent of Materials Science and Engineering - Faculty of Engineering - Shahid Bahonar University of Kerman , Hosseini, Shabnam Department of Materials Science and Engineering - Ayatollah Amoli Branch Islamic Azad University
Abstract :
Long-term stability and oxidation resistance of AISI 439 ferritic stainless stecl used as interconnects in solid oxide fuel cells can be improved by use of a protective coating. In this study the pack cementation method was employed to coat AISI 439 ferritic stainless steel with manganesc. Isothermal oxidation was conducted at 800 °C for 200 hours in static air to investigate the role of coating against oxidation. Cyclic oxidation was also performed for up to 100 cycles at the oxidation temperature of 800 °C. Formation of manganese oxides (MnFe, 04, Mn, and Mn 0,) during oxidation tests improved oxidation resistance. The coated samples demonstrated lower mass gain in each test, indicating the coating layer could have act as a mass barrier against the outward diffusion of cations specially Cr.
Keywords :
Interconnect , Manganese , AISI 439 ferritic stainless steel , Solid oxide fuel cell , Oxidation
Journal title :
Astroparticle Physics
