Fabrication of (Mn,Co)3O4 Surface Coatings onto Alloy Substrates

Yang, Zhenguo ; Xia, Guanguang ; Li, Xiaohong S. ; Singh, Prabhakar ; Stevenson, Jeffry W.

关键词: ALLOYS;    CATHODES;    COATINGS;    ELECTRIC CONDUCTIVITY;    EVAPORATION;    FABRICATION;    KINETICS;    LIFETIME;    OXIDATION;    PERFORMANCE;    PROTECTIVE COATINGS;    SOLID OXIDE FUEL CELLS;    SPINELS;    STABILITY;    STAINLESS STEELS;   

DOI  :  10.2172/1031994
RP-ID  :  PNNL-16470
PID  :  OSTI ID: 1031994
Others  :  Other: AA2530000
Others  :  TRN: US201202%%115

美国|英语

来源: SciTech Connect

【 摘 要 】

Ferritic stainless steels are promising candidates for IT-SOFC interconnect applications due to their low cost and resistance to oxidation at SOFC operating temperatures. However, several challenges remain, including long term electrical conductivity and surface stability under interconnect exposure conditions and chromia scale evaporation. One means of extending interconnect lifetime and improving performance is to apply a protective coating, such as (Mn,Co)3O4 spinel, to the cathode side of the interconnect. These coatings have proven effective in reducing scale growth kinetics and Cr volatility. This report describes several procedures developed at PNNL for fabricating (Mn,Co)3O4 spinel coatings onto ferritic stainless steels.