Al/B_4C复合粉末激光多层熔覆的研究  

Research on Al /B_4C composite layer by laser direct deposition technology

作　　者：程晶[1] 张永忠[1] 章萍芝[1] 石力开[1] 席明哲[1] 

机构地区：[1]北京有色金属研究总院复合材料中心,北京100088

出　　处：《应用激光》2002年第5期457-460,共4页Applied Laser

基　　金：国家"973"计划资助项目(G2000067205-1)

摘　　要：采用激光熔化同步输送的Al/B_4C复合粉末,在45#钢基体上制得Al/B_4C多层熔覆层,其组织致密均匀,B_4C颗粒大部分已分解,有两种针状相生成并均匀分布在铝基体上,经分析可知是Al_4C_3及AlB_(12)C_2。熔覆层具有较高的硬度。Al/B4C composite layer is fabricated with a Laser Direct Deposition set,of which the microstructure is dense and uniform . Mostly B4C particles have decomposed and formed two kinds of needle phases distributed e-venly on Al substrate which are Al4C3 and AlB12C2. The obtained layer is very hard.

关 键 词：Al/B4C复合粉末 激光熔覆 铝 碳化硼 熔覆层 

分 类 号：TN304[电子电信—物理电子学]