Solid solubility of hafnium in nickel

被引:12
作者
Hajjaji, M [1 ]
机构
[1] Fac Sci Semlalia, Dept Chim, Chim Phys Lab, Marrakech, Morocco
关键词
phase-diagram; Ni-Hf system; Ni(Hf) solid solution; solvus curve; solid solubility;
D O I
10.1016/S0925-8388(98)00356-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The solvus curve of the nickel-rich domain of nickel-hafnium phase diagram is determined by the parametric method based on the cell parameter measurements by X-ray diffraction. The maximum Hf solid solubility at the eutectic temperature is determined to be 1.3 at.%. On the other hand, it was found that the effect of Hf additions on the cell parameter of the Ni(Hf) solid solution is not predictable by the elastic theory. Furthermore, the determined enthalpy of Hf in Ni(Hf), containing more than 0.3 at.%, is around 113 kJ/mol. It is however about 17 kJ/mol for the Hf-lean Ni(Hf) solid solution. (C) 1998 Elsevier Science S.A.
引用
收藏
页码:185 / 188
页数:4
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