激光烧结Al_2O_3－WO_3材料的结构及特性  

The Structure and Properties of Al2O3-WO3 Sintered by Laser

作　　者：郑启光[1] 陶星之[1] 郑芳[1] 李兴教[1] 

机构地区：[1]激光技术国家重点实验室,华中理工大学激光技术国家重点实验室

出　　处：《华中理工大学学报》1995年第A01期6-9,共4页Journal of Huazhong University of Science and Technology

摘　　要：采用大功率ＣＯ＿２激光非平衡合成Ａｌ＿２Ｏ＿３－ＷＯ＿３陶瓷新工艺。分析了激光合成陶瓷的组织结构，测量了激光合成Ａｌ＿２Ｏ＿３－ＷＯ＿３材料的阻－温特性。通过Ｘ射线粉末分析和微区电阻测量，初步证明Ａｌ＿ｘＷＯ＿３相为激光合成Ａｌ＿２Ｏ＿３－ＷＯ＿３系材料的导电相。The non-equilibrium synthesis of Al2O3-WO3 ceramics by high power laser has been in-vestigated.The microstructure of the product was observed.The data of measurement onthe electrical properties shows that the cerarnics have some unique properties such as the lin-ear variation of the resistance with the temperature and with NTC characteristics.It hasbeen proved that the conducting phase in the laser-synthesized Al2O3-WO3 ceramics is thenon-equilibrium product AlxWO3 which does not exist in the Al2O3-WO3 equilibrium phase di-agram.

关 键 词：激光烧结 陶瓷 三氧化二铝 三氧化钨 

分 类 号：TF124.5[冶金工程—粉末冶金]