Author/Authors :
Ebrahimifar، Hadi نويسنده Department of Metallurgy and Materials Science, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran , , Ebrahimifar، Ali نويسنده Young Researchers and elites club, Kerman branch, Islamic Azad University, Kerman, Iran. *Corresponding Ebrahimifar, Ali
Abstract :
Protective coatings that resist oxide scale growth and decrease chromium evaporation are necessary to make stainless steel interconnect materials for long-term durable operation of solid oxide fuel cells (SOFCs). In this study a layer of manganese was coated on the surface of AISI 441 ferritic stainless steel which is used in solid oxide fuel cells for interconnect applications. The oxidation behavior of coated substrates was studied as a function of time at operating conditions of SOFCs. Cyclic oxidation has been also tested at 800 ?C for 100 cycles. Manganese coating during isothermal oxidation caused to the oxidation resistance by limiting the outward diffusion of Cr cation and the inward diffusion of oxygen anion. Results of cyclic oxidation exhibited that the coated substrates demonstrate good resistance against the spallation and cracking.
