Al/SiC复合材料的准分子激光表面改性  

SURFACE MODIFICATION OF Al/SiC METAL MATRIX COMPOSITE BY EXCIMER LASER

作　　者：梅胜敏[1,2] 余大民[1,2] 

机构地区：[1]南京航空航天大学机电工程学院 [2]香港理工大学制造工程系

出　　处：《航空学报》1999年第2期141-143,共3页Acta Aeronautica et Astronautica Sinica

摘　　要：利用ＫｒＦ准分子激光对ＳｉＣ晶须增强铝基复合材料进行表面改性。借助于显微镜及Ｘ射线衍射技术，对激光处理前后试件表层的显微组织及化学结构进行了分析。结果表明，准分子激光处理后，试件表面形成了一个几微米厚的铝层。该薄层中基本上不含金属间化合物，ＳｉＣ增强相的数量也显著减少。腐蚀测试结果表明，准分子激光表面处理后，材料的抗腐蚀性能得到了显著提高。The surfaces of 2009Al/SiC w metal matrix composite specimens were irradiated with a powerful KrF excimer laser. After laser treatment, the morphology and the structure were examined with the aid of microscope and X ray diffraction techniques. It was found that an aluminium layer a few microns thick was formed on the surface of Al MMC. Little SiC reinforcement and larger intermetallics can be found in this layer. Corrosion measurements showed that the laser modified Al MMC exhibited a higher corrosion resistance.

关 键 词：表面改性 铭基 复合材料 准分子激光 

分 类 号：TB331.03[一般工业技术—材料科学与工程]