TiO_2/Cr_2O_3复合气敏陶瓷元件的制备及性能研究  

Preparation and performation of TiO_2/Cr_2O_3 complex sensitive ceramic element

作　　者：王欢[1] 余萍[1] 刘洋[1] 胡国兵[1] 肖定全[1] 

机构地区：[1]四川大学材料科学系,成都610064

出　　处：《四川大学学报（自然科学版）》2005年第S1期510-513,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(50172032)

摘　　要：采用溶胶-凝胶法,在Ti O2中掺入一定配比的Cr2O3,制得了Ti O2/Cr2O3复合粉体.通过采用传统的陶瓷传感器制备工艺,制备了旁热式烧结型陶瓷元件.分别在不同浓度的苯和甲醛气氛中,测试了陶瓷元件的气敏特性.研究了加热功率和湿度对陶瓷元件的灵敏度和初始阻值的影响.气敏测试结果表明,制备出的传感器对浓度范围为10～650ppm的苯和甲醛气体都有较好的响应,特别在10～100ppm浓度范围具有较良好的灵敏度.The TiO_2/Cr_2O_3 complex powders are prepared with a special mixture ratio by SOL-GEL process. The heater-type sensitive ceramic elements are prepared by conventional ceramic sensors technology. The measurements of gas-sensitivity of these TiO_2/Cr_2O_3 elements are obtained respectively in the benzene and formaldehyde atmosphere with different concentration. Authors also research the heat power and relative humidity exert an influence on the sensors gas-sensitivity and the initial resistance of these ele...

关 键 词：TiO_2/Cr_2O_3 气敏陶瓷元件 灵敏度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]