Oxidation Properties of Metal/Ceramic Interconnectors for SOFC’s in Air, Ar-H2-H2O and Ar-CH4-H2O Atmospheres
The present paper is a review on the oxidation kinetics, electrical properties, chromium vaporization rate and microstructure investigations of oxide products formed on an uncoated Crofer 22 APU alloy and 1.4762 steel and coated by means of pulsed laser deposition and screen-printing methods with films of (La,Sr)CoO3, (La,Ca)CrO3, (La,Sr)CrO3, (La,Sr)(Co,Fe)O3 and MnCo2O4 in air and Ar-H2-H2O and Ar-CH4-H2O gas mixtures at 1023-1173 K for up to 1200 hrs. Microstructure investigations using SEM-EDS showed the influence of the reaction products formed in different atmospheres at the steel/coating interface on the electrical properties and Cr vaporization rate of these composite materials, which are used for construction of SOFC interconnects.
Toshio Maruyama, Masayuki Yoshiba, Kazuya Kurokawa, Yuuzou Kawahara and Nobuo Otsuka
K. Przybylski "Oxidation Properties of Metal/Ceramic Interconnectors for SOFC’s in Air, Ar-H2-H2O and Ar-CH4-H2O Atmospheres", Materials Science Forum, Vol. 696, pp. 400-405, 2011