Experimental determination and Re-optimization of Ni-Ta binary system

来源期刊：中国有色金属学报(英文版)2002年第4期

论文作者：潘溪淼 金展鹏

文章页码：748 - 753

Key words：diffusion couple; EMPA; thermodynamics; optimization; phase diagram

Abstract: Part of the phase boundaries of the solid phases in Ni-Ta system at 1223K, 1173K and 1123K were determined by the diffusion couple and EMPA methods. Based on the experiment data and the information from literatures, the phase equilibrium relationship and thermodynamic properties of the system were analyzed and a complete thermodynamic description were obtained. Apart from the intermetallic phase Ni-8Ta, All the inter-phases were treated with small homogeneity and the sub-lattice model was used to describe them. The calculated results reproduce the experiment information very well.