Influence of palladium on diffusion processes in the B2 NiAl phase

被引：7

作者：

Lamesle, P ^{[1
]}

Steinmetz, P ^{[1
]}

Vilasi, M ^{[1
]}

Claude, JM ^{[1
]}

机构：

[1] Univ Nancy 1, Fac Sci, Lab Chim Solide Mineral, URA CNRS 158, F-54506 Vandoeuvre Nancy, France

来源：

HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 4, PTS 1 AND 2 | 1997年 / 251-2卷

关键词：

beta-NiAl; modified beta-NiAl aluminide; direct coefficient of diffusion; cross-term diffusion;

D O I：

10.4028/www.scientific.net/MSF.251-254.163

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The study of diffusion couples made with ternary beta(Ni1-xPdx)(1-y)Al1+y aluminides highlights the effect of Pd on diffusion processes in the Pd modified B2 NiAl phase. In the stoichiometric aluminide phase, alloying of beta-NiAl with Pd induces an increase of D-Ni and D-Pd with Pd content. In the sub-stoichiometric aluminide phase, if Pd and Ni gradients have an opposite sign, Pd significantly slows down Ni diffusion. Inversely, if Pd and Al gradients have an opposite sign, the influence of Pd on Al diffusion is quite low.

引用

页码：163 / 170

页数：8

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