Ni-coated SiCp reinforced aluminum composites processed by vacuum infiltration

被引：28

作者：

Chung, WS ^{[1
]}

Lin, SJ ^{[1
]}

机构：

[1] NATL TSING HUA UNIV,DEPT MAT SCI & ENGN,HSINCHU,TAIWAN

来源：

MATERIALS RESEARCH BULLETIN | 1996年 / 31卷 / 12期

关键词：

composites; electron microscopy; microstructure;

D O I：

10.1016/S0025-5408(96)00150-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A vacuum infiltration process has been developed to process aluminum-base composites reinforced with particulate SiCp. Electroless nickel coating of SiCp was used to improve wetting by molten aluminum. Experimental results showed that composites of aluminum with 5.9 wt% Si and 0.23 wt% Mg containing about 50 vol% Ni-coated SiCp were completely infiltrated at a temperature above 700 degrees C. The effects of nickel coating thickness and infiltration temperature on infiltration behavior were investigated. The infiltration rate increased and the infiltration incubation time decreased with increasing infiltration temperature or nickel coating thickness. The microstructure, nickel distribution, bending strength and fracture were also examined. Nonuniformity bending strength and fracture morphology were attributed to nickel macrosegregation.

引用

页码：1437 / 1447

页数：11

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