Microstructure and oxidation of Ni–Fe2O3 composite coating on AISI 304 stainless steel
Microstructure and oxidation of Ni–Fe2O3 composite coating on AISI 304 stainless steel
复制标题
AISI 304不锈钢上Ni-Fe2O3复合镀层的显微组织和氧化
DOI：
10.3139/146.111740
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
H. Ebrahimifar
中科院分区：
文献类型：
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作者：
Mohsen Abaei;M. Zandrahimi;H. Ebrahimifar
摘要保护涂层可用于提高固体氧化物燃料电池中互连线的性能。在改进的瓦特型电解液中，用电镀的方法在AISI 304钢表面镀上了Ni-Fe_2O_3复合涂层。采用扫描电子显微镜、能谱仪和X射线衍射仪对复合涂层的组织和成分进行了分析。在850℃空气中恒温氧化200h，可将Ni-Fe2O3复合镀层转化为Fe2O3/NiFe2O4复合镀层。与未涂层的样品相比，涂层还降低了铬的向外迁移和Cr2O3层的生长速度。
Abstract Protective coatings can be used to enhance the performance of interconnects in solid oxide fuel cells. In the present work, AISI 304 steel was coated with Ni–Fe2O3 composite from a modified Watt's type electrolyte by electroplating. The composite coating's microstructure and composition were investigated by scanning electron microscopy with energy dispersive X-ray spectroscopy and X-ray diffraction. Isothermal oxidation for 200 h in air at 850 °C converted the Ni–Fe2O3 composite coating to Fe2O3/NiFe2O4. The coating layer also decreased outward migration of chromium and the growth rate of a Cr2O3 layer, compared to an uncoated specimen.