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.
出处
《华中理工大学学报》
CSCD
北大核心
1995年第A01期6-9,共4页
Journal of Huazhong University of Science and Technology
关键词
激光烧结
陶瓷
三氧化二铝
三氧化钨
laser sintered
Al2O3-WO3
NTC characteristics
AlxWO3 phase
