Interdiffusion in the face-centred cubic phase of the Ni-Re, Ni-Ta and Ni-W systems between 900 and 1300°C
Interdiffusion in the face-centred cubic phase of the Ni-Re, Ni-Ta and Ni-W systems between 900 and 1300°C
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DOI：
10.1016/s0921-5093(99)00705-4
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发表时间：
2000-04-15
期刊：
影响因子：
6.4
通讯作者：
Reed, RC
中科院分区：
文献类型：
--
作者：
Karunaratne, MSA;Carter, P;Reed, RC
为了推导出Ni-Re、Ni-Ta和Ni-W系富镍端互扩散系数与温度和成分的关系，制作了许多扩散偶，并在900-1300℃之间进行了热处理。用电子探针测定了浓度分布。随后，利用改进形式的Boltzmann-Matano分析确定了互扩散系数的值，并给出了这些值。互扩散系数只有很弱的浓度依赖性。结果与文献中提供的非常有限的数据进行了比较。(C)2000 Elsevier Science S.A.保留所有权利。
In order to deduce the temperature and composition dependence of the interdiffusion coefficient in the nickel-rich end of the Ni-Re, Ni-Ta and Ni-W systems, a number of diffusion couples have been fabricated and heat treated at temperatures between 900 degrees C and 1300 degrees C. The concentration profiles so-obtained have been determined using an electron microprobe. Subsequently, values of the interdiffusion coefficients were determined using a modified form of the Boltzmann-Matano analysis, and these are presented. Only a very weak concentration dependence of the interdiffusion coefficients was found. The results are compared with the very limited data which are available in the literature. (C) 2000 Elsevier Science S.A. All rights reserved.