涂覆颗粒增强耐热铝基复合材料的力学性能  

Mechanical properties of coated particulates reinforced heat resistance aluminium matrix composites

作　　者：于澍[1] 李云平[1] 李溪滨[1] 

机构地区：[1]粉末冶金国家重点实验室,长沙410083

出　　处：《粉末冶金材料科学与工程》2001年第1期63-68,共6页Materials Science and Engineering of Powder Metallurgy

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;分析对比了两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(0812)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％Si(Ni)/Al-Fe-V-Si(0812)复合材料在室温的断裂强度分别比基体和10％SiC_p/Al-Fe-V-Si(0812)复合材料增加了62.15％和2.82％,在400℃时分别增加了55.3％和78.6％.The priocess of a new powder chemical coating (transpositional coating) to produce Nickel-coated SiCParticulates was studied and with a result of that Nickel coatings is very smooth and well-knit; Two kindsof coating process and coating result was also analysed, By comparing the physical and mechanical pror-perties of different materials, The results show that the strength of 10% SiC (Ni)/Al-Fe-V-Si (0812) com-posites are 62. 15% and 2. 82% more than 10% SiC_p/Al-Fe-V-Si (0812) composites and the matrix Al-Fe-V-Si (0812) alloy in ambient temperature, and it is 55. 3% and 28 .6% at 400℃ respectively.

关 键 词：化学涂层 置换法 热挤压 耐热铝基复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]