Al/SiC复合材料激光快速成形的研究  

Al/SiC Composite Made by Laser Direct Deposition

作　　者：程晶[1] 张永忠[1] 高士友[1] 石力开[1] 席明哲[1] 

机构地区：[1]北京有色金属研究总院,北京100088

出　　处：《稀有金属》2002年第3期179-182,共4页Chinese Journal of Rare Metals

基　　金：国家"973"计划资助项目 (G2 0 0 0 0 672 0 5 1)

摘　　要：激光快速成形技术制备Al/SiC复合材料基于快速成形原理 ,通过激光熔化同轴输送的Al/SiC复合粉末 ,在基板上直接成形出薄壁样品。鉴于Al/SiC复合粉末的特点 ,采用基板预热并预涂覆吸光涂层以降低所需的激光功率 ,避免铝的过度熔化和SiC的分解。所制得的Al/SiC复合材料组织均匀、细小 ,SiC分解量很少且分布均匀 ,有少量的Al4C3 ,Al4SiC4及单质硅生成。Al/SiC composite was produced by laser direct deposition. The thin wall composite was directly obtained by laser melting the Al/SiC powder which were evenly mixed and delivered coaxially. On account of the characteristics of the Al/SiC powder, the Al alloy substrate was pre heated and coated with light absorption material to reduce the required laser power which will prevent the excessive melting of Al and the decomposition of SiC. The microstructure of obtained Al/SiC composite is fine. SiC particles are distributed evenly with little decomposition, and a small quantity of Al 4SiC 4,Al 4C 3 and Si are formed.

关 键 词：AL/SIC 复合材料 激光快速成形 铝碳化硅 组织性能 

分 类 号：TB331[一般工业技术—材料科学与工程]