%0 Journal Article
%T Surface Modification of Ceramic Materials Using Excimer Laser
%A Yingna WU
%A Zhongchao FENG
%A Jing LIANG
%A <br>
%J 材料科学技术学报
%D 2000
%I 
%X Changes of surface morphology following XeCl excimer laser irradiation were investigated for three engineering ceramic materials (Al2O3, Al2O3-SiC nanocomposite and Si3N4) Al2O3 and Al2O3-SiC nanocomposite samples exhibit a smooth rapid melt layer on the surface, and the formation of the metastable gamma-Al2O3 was observed. A silicon-rich layer on the surface was formed after laser irradiation of Si3N4. The toughness K-1c of the materials was measured by the indentation fracture method. After laser irradiation, the toughness of Al2O3, Al2O3-SiC nanocomposite and Si3N4 was improved to various degrees: Al2O3-SiC nanocomposite, 60% (max.), Al2O3, 40% (max.), Si3N4, 12% (max.).
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=FCE7FBC5C4315B9D&yid=9806D0D4EAA9BED3&vid=7801E6FC5AE9020C&iid=E158A972A605785F&sid=238BD7580EFCC5AE&eid=B79ACB6EBBFC9730&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0