Air oxidation of binary Ni-Dy alloys at 923-1023K and lithiation in molten (0.62Li, 0.38K)(2)CO3 at 923K
文献类型：期刊论文
| 作者 | Z. P. Liu ; P. Y. Guo ; C. L. Zeng |
| 刊名 | High Temperature Materials and Processes
 |
| 出版日期 | 2006 |
| 卷号 | 25期号:4页码:217-224 |
| 关键词 | molten carbonate fuel cell Ni-Dy alloys oxidation molten carbonates lithiation fe-20cr alloys behavior 600-800-degrees-c coatings |
| ISSN号 | 0334-6455 |
| 中文摘要 | In order to decrease the solubility of NiO cathode of molten carbonate fuel cell (MCFC) and develop materials and coatings for separators in the cathode side of MCFC, dysprosium was introduced to modify nickel. In present paper, binary Ni-Dy alloys containing 1, 3 and 5 mass%Dy respectively were prepared. The alloys are two-phase composed of a nickel solid solution and an intermetallic phase Ni17Dy2. The oxidation behavior of the alloys at 923-1023K in air was evaluated by thermogravimetric tests coupled with some physical analysis techniques. The samples pre-oxidized at 923K for 100h were then immersed in molten (0.62Li,0.38K)(2)CO3 at 923K to examine the effect of Dy on the lithiation of NiO in the melt. The results indicated that the addition of dysprosium to nickel increased its oxidation rate, except for Ni-1Dy at 1023K. The scales formed on the alloys were composed of NiO with a trace of DY2O3. The lithiation of NiO in molten (Li,K)(2)CO3 could be favored by the addition of dysprosium. For comparison, binary Ni-Y alloys were also examined. The effect of yttrium on the air oxidation and molten (Li,K)(2)CO3 corrosion of nickel was similar to dysprosium, except that the Y-containing precipitates in Ni-Y alloys underwent very fast preferential corrosion while the Dy-containing intermetallic phases in Ni-Dy alloys not. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34375]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. P. Liu,P. Y. Guo,C. L. Zeng. Air oxidation of binary Ni-Dy alloys at 923-1023K and lithiation in molten (0.62Li, 0.38K)(2)CO3 at 923K[J]. High Temperature Materials and Processes,2006,25(4):217-224. |
| APA | Z. P. Liu,P. Y. Guo,&C. L. Zeng.(2006).Air oxidation of binary Ni-Dy alloys at 923-1023K and lithiation in molten (0.62Li, 0.38K)(2)CO3 at 923K.High Temperature Materials and Processes,25(4),217-224. |
| MLA | Z. P. Liu,et al."Air oxidation of binary Ni-Dy alloys at 923-1023K and lithiation in molten (0.62Li, 0.38K)(2)CO3 at 923K".High Temperature Materials and Processes 25.4(2006):217-224. |
入库方式： OAI收割
来源：金属研究所
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