酸性蚀刻废液再生用钛基电极的电催化与耐腐蚀性能  

Properties of electrocatalysis and corrosion resistance of titanium-based electrodes for regenerating spent acidic etchant

作　　者：蒋玉思[1] 黄奇书[1] 雷一锋[1] 张建华[1] 崔静[1] 张四奇[1] 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院),广东广州510650

出　　处：《材料研究与应用》2012年第4期251-255,共5页Materials Research and Application

基　　金：广东省科技计划项目(2007B080203003)

摘　　要：采用热分解法制备出二氧化铱涂层钛阳极.采用循环伏安曲线、强化腐蚀等方法对酸性蚀刻废液再生用二氧化铱涂层钛阳极的电催化性能、耐腐蚀性能进行研究;应用恒流腐蚀等方法对阴极钛片在盐酸介质中的耐腐蚀性能进行了测试.结果表明,在氧化还原电位为498mV的典型酸性蚀刻废液中,二氧化铱涂层钛阳极表面Cu+的起始氧化电位为0.441V(相对饱和甘汞电极);在HCl质量浓度2mol/L、Cu2+质量浓度20g/L的溶液中,在电流密度0.12A/cm2的条件下,阴极钛片的吸氢腐蚀增量为0.32mg/(cm2.d).The IrO2 coated titanium anode was prepared by thermal decomposition. The electrocatalytic and the corrosion resistance properties of the coated titanium anode for regenerating acidic etchant were studied by cyclic voltammetry and enhanced corrosion test. The corrosion resistance performance of the cathode ti- tanium plate in the hydrochloride acid media was also investigated by constant current corrosion test. The results show that the initial oxidation potential of the cuprous ion on IrO2 coated titanium electrode surface is 0. 441 V（vs. saturated calomel electrode） in the spent acidic etchant with the redox potential of 498 mV; the corrosion amount of the titanium cathode is 0.32 mg/（cm2 · d） in the solution containing the 2 mol/L HCI and 20 g/L Cu^2 ＋ with an applied current density of 0.12 A/cm2.

关 键 词：二氧化铱涂层钛阳极 酸性蚀刻废液 电催化性能 耐腐蚀性能 

分 类 号：TQ150.1[化学工程—电化学工业]