涂覆颗粒增强耐热铝基复合材料SiC(Ni)/Al-Fe-V-Si力学性能研究  

Mechanical Properties of Coated Particulates Reinforced Heat Resistance Aluminium Matrix Composites

作　　者：李云平[1] 李溪滨[1] 

机构地区：[1]中南大学,湖南长沙410083

出　　处：《稀有金属材料与工程》2002年第3期183-186,共4页Rare Metal Materials and Engineering

基　　金：国家"九五"科技攻关计划基金资助项目 (95 YS 0 10 )

摘　　要：应用新型化学涂层工艺 (置换法 ) ,成功地制备出结合紧密、光滑的Ni涂SiC粉末 ;分析对比了 2种不同涂层工艺原理及涂层效果 ;分析了不同SiC增强Al Fe V Si (0 812 )复合材料物理和力学性能 ,结果表明 :由于涂覆SiC与基体的结合更加牢固 ,较软的基体合金与过渡层Ni的结合而降低了增强体与基体合金之间的孔隙率 ,从而使10 %SiC (Ni) Al Fe V Si (0 812 ) (质量分数 ,下同 )复合材料在室温的断裂强度分别比基体和 10 %SiCp Al Fe V Si(0 812 )复合材料增加了 62 15 %和 2 82 % ,在 40 0℃时分别增加了 5 5 3 % ,2 8 6%。The process of a new powder chemical coating used for producing nickel-coated SiC particulates was studied. Nickel coatings were very smooth and well-knit; Two kinds of coating process and coating results were also analysed. The results show that the strengths of 10wt%SiC(Ni)/Al-Fe-V-Si(0812) composites are 62.15% and 2.82% more than those of 10%SiCp/Al-Fe-V-Si(0812) composite, and the matrix Al-Fe-V-Si(0812) alloy in ambient temperature respectively. The strenghts of the former at 400 degreesC are increased by 55.3% and 28.6% compared with those of the two later respectively.

关 键 词：化学涂层 置换法 热挤压 耐热铝基复合材料 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]