不同制备工艺参数对ZnO线性电阻性能的影响  

Influence of Different Process Parameters on the Properties of ZnO Linear Resistance

作　　者：戴淑红 鲁加加 闫虹璇 李良锋[1] DAI Shuhong;LU Jiajia;YAN Hongxuan;LI Liangfeng(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学材料与化学学院,绵阳621010

出　　处：《玻璃》2022年第10期1-7,12,共8页Glass

基　　金：四川省教育厅自然科学重点项目(17ZA0395);西南科技大学“龙山人才”资助项目(18LZX679);西南科技大学大学生创新创业训练计划项目(21XCY032)。

摘　　要：ZnO线性电阻作为一种能量吸收材料,因拥有优良的线性、阻温性能和高能量密度而受到广泛关注。采用固相烧结法制备出ZnO-Al_(2)O_(3)-MgO-TiO_(2)-Y_(2)O_(3)线性电阻,主要研究了原料预烧方式和电极对ZnO线性电阻物相组成、微观形貌、体积密度、非线性系数和电阻温度系数等影响。结果表明:预烧原料可以显著提高ZnO线性电阻的阻温性能。当烧结温度低于1380℃时,预烧原料,尤其是预烧除ZnO以外的所有原料(MATY)可以明显提高ZnO线性电阻的体积密度。相比于Ag电极,使用Al电极时,ZnO线性电阻的电性能更优异,其非线性系数为1.05,电阻温度系数为-1.28×10^(-3)/℃,电阻率仅为137 W·cm。As a kind of energy-absorbing material,ZnO linear resistor has received wide attention because of its excellent linearity,temperature resistance performance and high energy density.ZnO-Al_(2)O_(3)-MgO-TiO_(2)-Y_(2)O_(3) linear resistors were prepared through the solid-phase sintering method.The effects of the pre-sintering method of raw material and different electrodes on the phase compositions,microstructure,bulk density,nonlinear coefficient and resistance temperature coefficient of ZnO linear resistors were systematically investigated.The results show that pre-sintering raw materials can significantly improve the temperature resistance performance of ZnO linear resistance.When the sintering temperature is lower than 1380℃,pre-sintering raw materials can significantly improve the bulk density of ZnO linear resistance,especially pre-sintering all raw materials except ZnO(MATY).The electrical properties of ZnO linear resistance with Al electrode are better than that of ZnO linear resistance with Ag electrode,which has a nonlinear coefficient of 1.05,a resistance temperature coefficient of-1.28×10^(-3)/℃,and aresistivity of 137Ω·cm.

关 键 词：ZnO线性电阻 工艺参数 预烧 电极 性能 

分 类 号：TQ171[化学工程—玻璃工业]