分析了Ca-Dy2O3-Fe体系高温还原-扩散制备DyFe2热力学可能性,应用收缩核模型确定扩散是该体系反应的控制步骤,并进行了XRD,EDX与SEM分析,得知在高温下可用Ca还原Dy2O3生成Dy,Dy向Fe中扩散生成DyFe2,同时求得DyFe2的表观活化能为210 kJ/mol.
参考文献
[1] | Zhou S Z. Rare Earth Magnets and Their Applications.Beijing:Metallurge Industry Press,1995:1(周寿增.稀土永磁材料及其应用北京:冶金出版社,1995:1) |
[2] | Liang Y J, Che Y C. Hand Book of Thermodynamical Data for Inorganic Sabstance. Shenyang: Northeasten University Press, 1993:137(梁英教,车荫昌无机物热力学数据手册.沈阳:东北大学出版社,1993:137) |
[3] | Paulik J, Paulik F. Thermochim Acta, 1971; 3:1 |
[4] | Jacobs P W M, Tompkins F C, Garner W E. Chemistry of the Solid State. New York: Academic Press, 1955:184 |
[5] | Budnikov P P, Ginstring A M. Principles of Solid State Chemistry. Gordon and Breach, New York, 1968:168 |
[6] | Carter P E. J Chem Phys, 1961; 34:2010 |
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%