作为磁制冷工质的稀土金属钆(Gd),由于长期处于热交换介质水中,而钆本身化学稳定性差,室温下即可与水发生析氢反应,所以钆在水中的腐蚀行为研究对磁制冷机的开发有着重要意义.通过失重法、极化曲线法、扫描电镜观察及X-射线能谱分析表明,杂质含量相近、杂质细小且弥散均匀的金属,与杂质较大但集中分布的金属相比,腐蚀严重.
参考文献
| [1] | Brown G V .Magnetic heat pumping near room temperature[J].Journal of Applied Physics,1976,47(08):3673-3680. |
| [2] | Steyert WA .Stirling-cycle rotating magnetic refrigerators and heat engines for use near room temperature[J].Journal of Applied Physics,1978,49(03):1216-26. |
| [3] | Kirol LD;Dacus MW .Rotary recuperative magnetic heat pump[J].Advances in Cryogenic Engineering,1987,33:757-65. |
| [4] | Zimm C;Jastrab A;Sternberg A et al.Description and performance of a near-room temperature magnetic refrigerator[J].Advances in Cryogenic Engineering,1998,43:1759-66. |
| [5] | 刘光华编著.稀土固体材料学[M].北京:机械工业出版社,1997:11. |
| [6] | 魏宝明.金属腐蚀理论及应用[M].北京:化学工业出版社,2001:2. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%