Corrosion behaviour of aluminium matrix composites containing silicon carbide particles

被引:7
作者
Harris, SJ
Noble, B
Trowsdale, AJ
机构
来源
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 1996年 / 217卷
关键词
metal matrix composites; aluminium alloys; electrochemical behaviour; corrosion fitting;
D O I
10.4028/www.scientific.net/MSF.217-222.1571
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An examination of the pitting attack in two aluminium matrix composites (1050 and 2124) each reinforced with varying fractions (0-30 wt. %) of silicon carbide particles (SiCp) in the size range 3-40 mu m has been made in 1 N NaCl solution. It has been demonstrated that the existence of pores and crevices at SiCp/matrix interfaces strongly influences pit initiation. This is further aided by the cracking of large SiCp greater than or equal to 20 mu m, during processing. The presence of theta(CuAl2) and S(CuMgAl2) precipitates in 2124-SiCp composite also promotes pitting attack at SiCp-matrix and intermetallic-matrix interfaces.
引用
收藏
页码:1571 / 1576
页数:6
相关论文
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