多孔钛基贱金属阳极的性能和失效机理的研究  

The Research of Performance and Failure Mechanisms for Porous Titanium-based Low-price Metal Anodes

作　　者：范亚卓[1] 王昆[1] 张颖 

机构地区：[1]西北有色金属研究院西安泰金工业电化学技术有限公司,陕西西安710016 [2]兵器工业卫生研究所,陕西西安710065

出　　处：《新技术新工艺》2013年第11期115-117,共3页New Technology & New Process

摘　　要：通过以钛金属粉末冶金技术制备的多孔过滤钛材料为基体,以涂敷Sn,Sb氧化物为中间层,再涂敷Mn(NO3)2溶液,然后进行热分解的方法制备贱金属多孔钛阳极。为了研究多孔钛基贱金属阳极在析氧领域的应用,在1mol/L的H2SO4溶液中做强化寿命测试,电流密度为20 000A/m2。由试验结果可知,随着基体多孔钛的厚度的增加,在不改变涂层成分的条件下,多孔钛基贱金属阳极的强化寿命呈线性增加,当到达一定厚度之后,强化寿命为一定值,不再随着基材厚度的增加而增加。通过研究多孔钛基贱金属阳极失效前后的表面形貌,从表观上分析了多孔钛基贱金属阳极的失效机理。By porous filter titanium material prepared by powder metallurgy techniques as base,making Sn and Sb ox-ides as intermediate layer,and then coated with Mn （NO3 ）2 solution,and then preparing a low-price metal porous titanium anodes by the method of heat decomposition.For studying the applications of porous titanium-based low-price metal anodes in oxygen evolution,we tested the accelerated life in 1 mol/L H 2 SO4 solution,current density is 20 000 A/m2 .The results show that accelerated life of porous titanium-based low-price metal anodes increase linearly with the increase of the thickness for the base body of porous titanium and without changing the conditions of the coating composition,when after a certain thickness is reached,the strength lifetime is a certain value,no longer increasing with the increase of the substrate thick-ness.Analysis from the surface morphology before and after the failure of the porous titanium-base low-price metal anodes, we obtain the failure mechanism of the porous titanium-base low-price metal anodes as follows.

关 键 词：多孔钛阳极 失效机理 贱金属 涂层 

分 类 号：TQ174[化学工程—陶瓷工业]