| LaCrO3-based coatings deposited by high-energy micro-arc alloying process on a ferritic stainless steel interconnect material | |
| Feng, Z. J.; Zeng, C. L. | |
| Corresponding Author | Zeng, C. L.(clzeng@imr.ac.cn) |
| 2010-07-01 | |
| Source Publication | JOURNAL OF POWER SOURCES
 |
| ISSN | 0378-7753 |
| Volume | 195Issue:13Pages:4242-4246 |
| Abstract | Currently used ferritic stainless steel interconnects are unsuitable for practical applications in solid oxide fuel cells operated at intermediate temperatures due to chromium volatility, poisoning of the cathode material, rapidly decreasing electrical conductivity and a low oxidation resistance. To overcome these problems, a novel, simple and cost-effective high-energy micro-arc alloying (HEMAA) process is proposed to prepare LaCrO3-based coatings for the type 430 stainless steel interconnects. However, it is much difficult to deposit an oxide coating by HEMAA than a metallic coating due to the high brittleness of oxide electrodes for deposition. Therefore, a Cr-alloying layer is firstly obtained on the alloy surface by HEMAA using a Cr electrode rod, followed by a LaCrO3-based coating using an electrode rod of LaCrO3-20 wt.%Ni, with a metallurgical bonding between the coating and the substrate. The preliminary oxidation tests at 850 degrees C in air indicate that the LaCrO3-based coatings showed a three-layered microstructure with a NiFe2O4 outer layer, a thick LaCrO3 sub-layer and a thin Cr2O3-rich inner layer, which thereby possesses an excellent protectiveness to the substrate alloy and a low electrical contact resistance. (C) 2010 Elsevier B.V. All rights reserved. |
| Keyword | Solid oxide fuel cells Ferritic metallic interconnect High-energy micro-arc alloying technique Lanthanum chromite Oxidation Contact resistance |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jpowsour.2010.01.023 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[50771101] |
| WOS Research Area | Electrochemistry ; Energy & Fuels |
| WOS Subject | Electrochemistry ; Energy & Fuels |
| WOS ID | WOS:000276764600038 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/101680 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zeng, C. L. |
| Affiliation | Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Feng, Z. J.,Zeng, C. L.. LaCrO3-based coatings deposited by high-energy micro-arc alloying process on a ferritic stainless steel interconnect material[J]. JOURNAL OF POWER SOURCES,2010,195(13):4242-4246. |
| APA | Feng, Z. J.,&Zeng, C. L..(2010).LaCrO3-based coatings deposited by high-energy micro-arc alloying process on a ferritic stainless steel interconnect material.JOURNAL OF POWER SOURCES,195(13),4242-4246. |
| MLA | Feng, Z. J.,et al."LaCrO3-based coatings deposited by high-energy micro-arc alloying process on a ferritic stainless steel interconnect material".JOURNAL OF POWER SOURCES 195.13(2010):4242-4246. |
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