Effects of electroless nickel plating on 441 stainless steel as SOFC interconnect

被引：31
|
作者：
Shong, Wei-Ja [1 ]
Liu, Chien-Kuo [1 ]
Yang, Peng [1 ,2 ]
机构：
[1] Inst Nucl Energy Res, Div Phys, Tao Yuan 32546, Taiwan
[2] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10617, Taiwan
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2012年 / 134卷 / 2-3期
关键词：
Coatings; Oxidation; Microstructure; Electrical conductivity; OXIDE FUEL-CELLS; METALLIC INTERCONNECTS; COATINGS; NI;
D O I：
10.1016/j.matchemphys.2012.03.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metal nickel was electrolessly deposited in thickness of approximately 6, 8, and 10 mu m on ferritic stainless steel 441. Oxidation behaviour of plated samples was investigated after isothermal ageing at 750 degrees C for 400 h in an air atmosphere. Microstructure examination showed that nickel oxide formed on the surface, (Fe, Ni)(3)O-4 spinel layer at the subsurface, and chromite at the oxide scale/steel interface. No chromium species was readily detected on the outer surface. Area specific resistance measurement indicated 2.0, 3.3, and 6.3 m Omega cm(2) for 6, 8, and 10 mu m plating layers, respectively, all lower than that of the uncoated case, 28 m Omega cm(2). Results suggested nickel plating of thickness 8 pm would be sufficient for effectively preventing Cr out-diffusion while maintaining a low electric resistivity. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：670 / 676
页数：7
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