Al_2O_3-SiC纳米复合陶瓷的准分子激光表面改性  

Surface modification of Al_2O_3SiC nanocomposites using excimer laser

作　　者：武颖娜[1] 梁勇[1] 冯钟潮[1] 

机构地区：[1]中国科学院金属研究所,辽宁沈阳110015

出　　处：《材料科学与工程》2000年第2期35-37,共3页Materials Science and Engineering

基　　金：国家自然科学基金!资助项目 595750 6 7

摘　　要：采用 Xe Cl准分子激光器 (波长 3 0 8nm)照射 Al2 O3 -Si C纳米复合陶瓷试样 ,能量密度在 0 .8～ 6.0 J/ cm2 范围内。照射后 ,表面缺陷消除 ,形成连续分布的光滑平整的熔化层 ,并出现亚稳相 γ-Al2 O3 。由于表面形貌的改善和结构的变化 ,使表面韧性 K1c得到提高。Samples of the Al_2O_3SiC nanocomposites were irradiated with XeCl excimer laser (308nm wavelength), using the energy density in the range of 08～60J/cm2. The defects were deleted and a continuous smooth melt layer on the surface was formed. And the metastable γAl_2O_3 on the surface was observed. The surface toughness K_1c was improved, because of the improvement of surface morphology and the change of surface structure.

关 键 词：准分子激光 Al2O3-SiC纳米复合陶瓷 表面改性 

分 类 号：TQ174.758[化学工程—陶瓷工业] TN249[化学工程—硅酸盐工业]