SOFC钢互连用Ni/NiFe2双层涂层

IF 5.4 Q2 CHEMISTRY, PHYSICAL
Qingqing Zhao, Shujiang Geng, Xingye Gao, Gang Chen, Fuhui Wang
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引用次数: 11

摘要

采用磁控溅射技术在sus430不锈钢表面制备了Ni/NiFe2双层涂层,用于固体氧化物燃料电池(sofc)互连。与NiFe2涂层钢相比,Ni/NiFe2涂层钢暴露在800 °C的空气中持续时间长达10周。Ni/NiFe2涂层热转化为内部NiO层和外部NiFe2O4尖晶石层的氧化物结构。在长期暴露过程中,NiO/NiFe2O4氧化层比NiFe2涂层转化成单一NiFe2O4氧化层更有效地阻止Cr迁移和降低氧化速率。NiO层在Cr2O3和NiFe2O4之间起到了扩散屏障的作用,从而提高了材料的抗氧化性能和阻cr性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ni/NiFe2 dual-layer coating for SOFC steel interconnects application

Ni/NiFe2 dual-layer coating is fabricated on SUS 430 stainless steel by magnetron sputtering for solid oxide fuel cells (SOFCs) interconnect application. Ni/NiFe2 coated steels are exposed to air at 800 °C for duration of up to 10 weeks in comparison with NiFe2 coated steels. Ni/NiFe2 coating is thermally converted to an oxide structure with an inner NiO layer and an outer NiFe2O4 spinel layer. NiO/NiFe2O4 oxide layer is more effective in blocking Cr migration and reducing oxidation rate during long-term exposure than a single NiFe2O4 layer converted from NiFe2 coating. Enhancements on oxidation resistance and Cr-blocking capability are attributed to NiO layer serving as a diffusion barrier between Cr2O3 and NiFe2O4.

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来源期刊
CiteScore
9.10
自引率
0.00%
发文量
18
审稿时长
64 days
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