低电压等离子喷涂TiO_2涂层光电流特性的研究  

STUDY OF PHOTOCURRENT—POTENTIAL PROPERTY OF LOW PRESSURE CONDITION PLASMA SPRAYED TiO_2 COATING ELECTRODE

作　　者：陈学定[1] 大森明[2] 荒田吉明[2] 

机构地区：[1]甘肃工业大学 [2]大阪大学焊接研究所

出　　处：《焊接学报》1990年第3期129-135,共7页Transactions of The China Welding Institution

摘　　要：本文通过改变低气压等离子喷涂TiO_2时的辅助气体氢气流量、喷涂室压力和涂层的热处理温度等,发现了具有优良光电流—电位特性的TiO_2涂层电极。通过对涂层结构分析,说明了TiO_2涂层电极的光电流—电位特性依赖于涂层结构,当金红石形TiO_2涂层中含有适量的Ti_3O_5和Magneli 相时,表现出最佳的光电流—电位特性,并与光强度成正比例关系。若涂层全部由金红石形TiO_2或TiO_3、Ti_3O_5和Magneli 相组成时,光电流—电位特性消失。In this paper,the TiO_2 coating electrode having a good photocurrent-potentail property has been discovered by varying the quantity of auxiliarygas(H_2),the pressure of spraying chamber and the heat treatment tempera-ture of the coating,etc.,in spraying TiO_2 coating with low pressurecondition plasma.By analysing the structure of the coating,it has beenshowed that the photocurrent-potential property of TiO_2 coating depends onthe structure of the coating.When there are appropriate Ti_3O_5 and Magnelphase in rutile TiO_2 coating,rutile TiO_2 coating will show an optimumphotocurrent-potential property directly proportional to light intensity.Ifthe coating consists of rutile TiO_2 or Ti_2O_3,Ti_3O_5 and Magnelis phase,its photocurrent-potential property will disappear.

关 键 词：TIO2涂层 等离子喷涂 特性 

分 类 号：TG174.442[金属学及工艺—金属表面处理]