铅阳极的制造方法与性能  

Preparation of Lead Alloy Anodes and their Anodic Properties

作　　者：李宁[1] 黎德育[1] 翟淑芳[1] 仓知三夫[2] 周德瑞[1] 

机构地区：[1]哈尔滨工业大学应用化学系,哈尔滨150001 [2]日本京都大学

出　　处：《材料工程》2000年第10期36-39,共4页Journal of Materials Engineering

摘　　要：研究了大气铸造或真空扩散焊制造的铅系合金阳极 Pb- 5% Sn,Pb- 0 .5% Ag,和 Pb- 1 % In- 0 .5% Ag的性能及其电解特性。研究发现 ,在 750℃高温下真空扩散焊制备的 Pb- 5% Sn阳极的析氧过电位 (1 .75V vs.SCE)比其它阳极低 ,经阳极氧化后能得到致密的仅含单一相 α- Pb O2 的氧化膜 ,而其它阳极的氧化膜除 α- Pb O2 外还含 β- Pb O2 或Pb SO4 。真空扩散焊 Pb- 5% Sn阳极的腐蚀速率比大气铸造的 Pb- 5% Sn阳极低 ,而铸造的 Pb- 0 .5% Ag和 Pb- 1 % In-0 .5% Ag阳极的腐蚀速率比铸造和真空扩散焊的 Pb- 5% Sn阳极都低。高温真空扩散焊制备的 Pb- 5% Sn阳极具有低析氧过电位、低溶解速率和低铅污染的特点 ,相对其它阳极更适合用于高速电镀锌中。Some lead alloy anodes prepared by open air casting or by vacuum diffusion bonding and their electrolytic properties are studied using Pb 5%Sn, Pb 0 5%Ag, and Pb 1%In 0 5%Ag alloys, respectively The Pb 5%Sn anode prepared by vacuum diffusion bonding method at 750℃ shows lower oxygen over voltage (1 75V vs SCE) than that of another anodes After anodic oxidation, compact oxide layer with single α PbO 2 is observed on this surface, the other anodes have oxide layer with combined α PbO 2 and β PbO 2 or PbSO 4 The rate of weight loss of this anode is less than that of the other Pb 5%Sn anodes prepared by open air casting method, the rate of weight loss of Pb 0 5%Ag and Pb 1%In 0 5%Ag anodes are less than Pb 5%Sn anodes It is found that the Pb 5%Sn anode prepared by high temperature vacuum diffusion bonding method is preferable to use for high speed electrogalvanizing, because of low oxygen over voltage, low weight loss, and low lead pollution, comparatively

关 键 词：铅合金阳极 真空扩散焊 大气铸造 高速电镀锌 

分 类 号：TQ153.15[化学工程—电化学工业]