钢芯铝绞线中的电偶腐蚀行为  

Galvanic Corrosion Behavior of Steel-Cored Aluminum Strand Wires

作　　者：刘秀玉[1] 苗帅[1] 詹成伟[1] 张新恩[1] 刘丰[1] 赵东清[1] 

机构地区：[1]山东省科学院新材料研究所,山东济南250014

出　　处：《材料保护》2010年第7期53-54,共2页Materials Protection

摘　　要：钢芯铝绞线中不同金属接触容易产生电偶腐蚀。通过测量Fe和Al分别与纯Zn、镀Zn、5%Al-Zn合金、2%Mg-Zn合金、55%Al-Zn合金在1mol/LNaCl溶液中的电偶电流,判断不同金属接触时的腐蚀程度,从而选择钢芯镀层,达到最佳匹配,减轻电偶腐蚀。结果表明:Fe与55%Al-Zn合金镀层的电偶电流最小,腐蚀程度最轻;含Mg的热镀Zn层与Al形成的电偶比纯热镀Zn层与Al形成的电偶的腐蚀程度轻。In view of galvanic corrosion among different metal-metal contacts in steel-cored Al strand wires, the galvanic currents of Fe and Al coupled with Zn, galvanizing coating, 5%Al-Zn alloy coating, 2%Mg-Zn alloy coating and 55% Al-Zn alloy coating in aqueous solution of 1 mol/L NaCl were measured so as to find optimized match among the strand wires and various metals and hence inhibit galvanic corrosion. It was found that Fe coupled with 55%Al-Zn alloy coating had the minimum galvanic current, showing the slightest corrosion. Mg-incorporated galvanizing coating coupled with Al had less severe corrosion than galvanizing coating coupled with Al.

关 键 词：电偶腐蚀 钢芯铝绞线 电偶电流 耐蚀性 

分 类 号：TG172.2[金属学及工艺—金属表面处理]