Oxidation behavior and electrical property of ferritic stainless steel interconnects with a Cr-La alloying layer by high-energy micro-arc alloying process

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	Oxidation behavior and electrical property of ferritic stainless steel interconnects with a Cr-La alloying layer by high-energy micro-arc alloying process
	Z. J. Feng; C. L. Zeng
	2010
发表期刊	Journal of Power Sources
ISSN	0378-7753
卷号	195 期号:21 页码:7370-7374
摘要	Chromium volatility, poisoning of the cathode material and rapidly decreasing electrical conductivity are the major problems associated with the application of ferritic stainless steel interconnects of solid oxide fuel cells operated at intermediate temperatures. Recently, a novel and simple high-energy micro-arc alloying (HEMAA) process is proposed to prepare LaCrO(3)-based coatings for the type 430 stainless steel interconnects using a LaCrO(3)-Ni rod as deposition electrode. In this work, a Cr-La alloying layer is firstly obtained on the alloy surface by HEMAA using Cr and La as deposition electrode, respectively, followed by oxidation treatment at 850 degrees C in air to form a thermally grown LaCrO(3) coating. With the formation of a protective scale composed of a thick LaCrO(3) outer layer incorporated with small amounts of Cr-rich oxides and a thin Cr(2)O(3)-rich sub-layer, the oxidation rate of the coated steel is reduced remarkably. A low and stable electrical contact resistance is achieved with the application of LaCrO(3)-based coatings, with a value less than 40 m Omega cm(2) during exposure at 850 degrees C in air for up to 500 h. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[feng, z. j.; zeng, c. l.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;zeng, cl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;clzeng@imr.ac.cn
关键词	Solid Oxide Fuel Cells Ferritic Metallic Interconnect High-energy Micro-arc Alloying Technique Lanthanum Chromite Oxidation Contact Resistance Oxide Fuel-cells Chromia-forming Alloy Lacro3-based Coatings Cathode Scales
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WOS记录号	WOS:000280569000036
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31107
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. J. Feng,C. L. Zeng. Oxidation behavior and electrical property of ferritic stainless steel interconnects with a Cr-La alloying layer by high-energy micro-arc alloying process[J]. Journal of Power Sources,2010,195(21):7370-7374.
APA	Z. J. Feng,&C. L. Zeng.(2010).Oxidation behavior and electrical property of ferritic stainless steel interconnects with a Cr-La alloying layer by high-energy micro-arc alloying process.Journal of Power Sources,195(21),7370-7374.
MLA	Z. J. Feng,et al."Oxidation behavior and electrical property of ferritic stainless steel interconnects with a Cr-La alloying layer by high-energy micro-arc alloying process".Journal of Power Sources 195.21(2010):7370-7374.