大功率CO_2激光器合成钨酸铝热敏电阻材料  

The Synthesis of Thermosensitive Material of Aluminum Tungstate by a High Power CO 2 Laser

作　　者：白铁城 曾祥斌 郑芳[1] 

机构地区：[1]武汉工业大学

出　　处：《华中理工大学学报》1996年第11期64-66,共3页Journal of Huazhong University of Science and Technology

摘　　要：利用大功率ＣＯ_２激光烧结新工艺制备钨酸铝负温度系数热敏电阻材料，发现材料在一定温度范围内阻温特性呈线性关系．研究激光烧结工艺条件对材料特性的影响．ＸＲＤ及ＸＰＳ的研究发现了具有类钙钛矿结构钨青铜导电相ＡｌｘＷＯ３。Thermosensitive material of aluminum tungstate with negative temperature coefficient (NTC) has been prepared by a high power CO 2 laser. It has been found by experiment that the resistance temperature characteristic of the samples is a linear one within a certain temperature range. The effect of the processing condition on the material characteristics is studied. The conducting Al x WO 3 phase with a link perovskite tungsten bronze structure has been found by investigation with XRD and XPS, which gives the ceramics semiconductivity and NTC.

关 键 词：阻温特性 钨酸铝 二氧化碳激光器 热敏电阻 陶瓷 

分 类 号：TM283[一般工业技术—材料科学与工程] TN37[电气工程—电工理论与新技术]