Spark plasma sintering of nanoscale (Ni plus Al) powder mixture

被引：11

作者：

Kim, Ji Soon ^{[1
]}

Choi, Hyeong Suk ^{[1
]}

Dudina, Dina ^{[1
]}

Lee, Jeong Keun ^{[2
]}

Kwon, Young Soon ^{[1
]}

机构：

[1] Univ Ulsan, Sch Mat Sci & Engn, Res Ctr Machine Parts & Mat Proc, San 29 Moogu 2 Dong, Ulsan 680749, South Korea

[2] Korean Agcy Technol & Stand, Div Logist & Transportat Stand, Gwacheon, South Korea

来源：

NANOCOMPOSITES AND NANOPOROUS MATERIALS | 2007年 / 119卷

关键词：

nickel aluminicles; nanopowder; spark plasma sintering; microstructure;

D O I：

10.4028/www.scientific.net/SSP.119.35

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An attempt was made to produce nickel aluminides with fine microstructure from nanoscale nickel and aluminum powders produced by wire electric explosion (WEE). The powders were mixed and spark plasma sintered (SPS) for simultaneous reaction and densification of the material. Various mixing methods were tested to give the best homogeneity of the nanopowders mixtures. Utrasonic pre-treatment of the powders did not result in any positive effect on mixing homogeneity. Sintered compact contained NiAl and Ni3Al phases, showed fine grain size and unexpectedly high hardness possibly due to the presence of aluminum oxide in the starting nanopowders.

引用

页码：35 / +

页数：2

共 10 条

[1] THEORETICAL-ANALYSIS OF GRAIN-SIZE EFFECTS ON TENSILE DUCTILITY [J].