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首页> 外文会议>Materials Science Technology Conference and Exhibition >INFLUENCE OF MN-CO SPINEL COATING ON OXIDATION BEHAVIOR OF FERRITIC SS ALLOYS FOR SOFC INTERCONNECT APPLICATIONS
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INFLUENCE OF MN-CO SPINEL COATING ON OXIDATION BEHAVIOR OF FERRITIC SS ALLOYS FOR SOFC INTERCONNECT APPLICATIONS

机译：Mn-Co尖晶石涂层对SOFC互连应用的铁素体SS合金氧化行为的影响

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摘要

Chromia forming ferritic stainless steels (SS) are being considered for intermediate temperature solid oxide fuel cell interconnect applications. However, protective coatings are in general needed to avoid chromium volatilization and poisoning of cathodes from chromium species. Mn-Co spinel is one of the promising candidates to prevent chromium outward diffusion, improve oxidation resistance and ensure high electrical conductivity over the lifetime of interconnects. In the present study, uniform and well adherent Mn-Co spinel coatings were produced on Crofer 22APU using electrophoretic deposition (EPD). The oxidation behavior of both the coated and bare alloy was evaluated at 800°C in air for 1000 h. The oxidation kinetics were investigated using weight gain and scale thickness measurements. The weight gain per unit surface area of the bare alloy exhibited parabolic oxidation behavior. The influence of Mn-Co spinel coating on chromia scale formation and corrosion rate of different ferritic stainless steels is also elucidated.
机译：正在考虑形成形成铁素体不锈钢（SS）的中间温度固体氧化物燃料电池互连应用。然而，保护涂层通常需要避免铬物质中的阴极挥发和中毒。 Mn-Co Spinel是预防铬向外扩散的有希望的候选物之一，提高抗氧化性并确保在互连的寿命上的高导电性。在本研究中，使用电泳沉积（EPD）在Crofer 22apu上制备均匀和良好的粘附Mn-Co尖晶石涂层。涂覆和裸合金的氧化行为在800℃下在空气中评价1000小时。使用重量增益和刻度厚度测量来研究氧化动力学。裸合金的每单位表面积的重量增益表现出抛物线氧化行为。 Mn-Co尖晶石涂层对不同铁素体不锈钢的染色级形成和腐蚀速率的影响也得到阐明。

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