Interdiffusion in Ni3Al

被引：26

作者：

Ikeda, T

Almazouzi, A

Numakura, H

Koiwa, M

Sprengel, W

Nakajima, H

机构：

[1] KYOTO UNIV,DEPT MAT SCI & ENGN,KYOTO 60601,JAPAN

[2] IWATE UNIV,DEPT MAT SCI & TECHNOL,MORIOKA,IWATE 020,JAPAN

来源：

DEFECT AND DIFFUSION FORUM | 1997年 / 143卷

关键词：

interdiffusion; self-diffusion; intermetallic compound; Ni3Al;

D O I：

10.4028/www.scientific.net/DDF.143-147.275

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Interdiffusion experiments have been made for Ni3Al using single-phase diffusion couples over the temperature range from 1273 K to 1473 K. The interdiffusion coefficient is larger than the self-diffusion coefficient of Ni by about an order of magnitude, and increases with increasing the Al concentration. For the stoichiometric composition, the apparent activation energy and. the pre-exponential factor for the interdiffusion coefficient are 243 +/- 16 kJ mol(-1) and 10(-4.9 +/- 0.6) m(2)s(-1), respectively. An attempt has been made to estimate the self-diffusion coefficient of Al on the basis of the Darken-Manning equation.

引用

页码：275 / 278

页数：4

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