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大功率CO₂激光器合成新型钨酸铝热敏材料的研究

Investigation on linear NTC aluminium tungstate ceramics synthesized by high power CW CO₂ laser

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【作者】郑芳；李兴教；苏武大；梁俊文；白铁城；曾祥斌；李再光；李家镕；郑启光；陶星芝；王涛；

【Author】 ZHENG Fang, LI Xingjiao, SHU Wuda, LIANG Jiewen, BAI Tiecheng, ZHEN Xingbin(Department of Solid State Electronics, Huazhong University of Science and Technology, Wuhan 430074)LI Zaiguang, LI Jiarong, Zheng Qiguang, TAO Xinzi, WANG Tao(National Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074)

【机构】华中理工大学固体电子学系；华中理工大学激光技术实验室；华中理工大学激光技术实验室武汉 430074；武汉 430074；武汉 430074；

【摘要】本文采用激光烧结新工艺合成了Al₂O₃-WO₃系负温度系数（NTC）热敏陶瓷材料。该材料在一定温区及组成下阻温关系呈线性变化,分析表明,材料中的导电相为非平衡相铝钨青铜Al_xWO₃。更多还原

【Abstract】 This paper introduces laser powder sintering as a new technique to synthesize electronic ceramics consisting of A12O3-WO3 system. This material has some unique properties such as linear decrease in resistivity of A12O3- 50 mol % WO3 specimens with increasing temperature over the range of 10°C to 150°C. X-ray photographic powder analysis indicated that the conducting phase in the specimen is a nonequilibrium product:A1xWO3.更多还原