钛基锡钌钴纳米涂层的制备

Preparation of Ti-base SnRuCo Electrode with Nano-coating

采用热分解法制备钛基锡钌钴纳米涂层,并系统研究了工艺参数对涂层的结构与物化性能的影响。结果表明:1)随着温度的升高,涂层表面的裂纹宽度有所增加。在制备温度为600℃时,涂层析出钌单质。2)钌含量较低时,主要为锡基固溶体;钌含量较高时,主要为钌基固溶体。添加锡能细化涂层晶粒。涂层裂纹数在钌含量较低和较高时都较少。3)随着钴含量的增加,涂层晶粒变细,但钌锡固溶体也开始脱熔。添加较多的钴会导致钴的氧化物以黑色颗粒状脱落,并附带钌的氧化物脱落。4)钛基锡钌钴涂层阳极的最佳制备工艺初步为:制备温度500℃;锡钌钴的摩尔比为61∶35∶4。

The effect of processing parameter to the physical chemistry capability and structure of coat prepared by normal thermal decomposition method is studied in this article. The result shows ： 1 ）with the temperature arising, the width of coat crack increases. When the preparation temperature of coat is 600℃, the coat can separate out Ru element. 2） When content of Ru is lower, the structure of coat is Sn-base sosoloid. When content of Ru is higher, the structure of coat is Ru-base sosoloid. Appending Sn in coat can refine the crystal grain. The crack of coat is few when the content of Ru in coat is lower and higher. 3 ） With the content of Co in coat arising, the crystal grain becomes thinner and thinner. But, the Ru-Sn sosoloid is isolating and maintaining. Appending much Co in coat result that the Co oxide sloughs. At the same time, the Ru oxide also sloughs. 4） The best prepared processing parameter of Ti-base SnRuCo electrode is that the preparation temperature is 500℃ and the mole ratio of Sn,Ru and Co is 61：35：d.