Formation of Ni5Al3 in Ni-Al laminated structures and powder blends

被引：10

作者：

Farber, L

Gotman, I

Gutmanas, EY ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

[2] Drexel Univ, Dept Mat Engn, Philadelphia, PA 19104 USA

来源：

MATERIALS LETTERS | 1998年 / 34卷 / 3-6期

关键词：

Ni aluminides; reactive diffusion; Ni5Al3; kinetic instability;

D O I：

10.1016/S0167-577X(97)00160-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, reactive formation of Ni5Al3 phase at 650 and 675 degrees C in Ni-Al laminated foil structures and consolidated powder blends is reported. The growth of Ni5Al3 has never been previously observed in diffusion experiments; moreover. its formation was believed impossible due to the very high nucleation barrier. Here, the absence of Ni5Al3 in the earlier studied Ni-Al diffusion couples is discussed in terms of kinetic instability. (C) 1998 Elsevier Science B.V.

引用

页码：226 / 231

页数：6

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