缆索用高强热浸镀锌及锌铝合金钢丝的性能  

Performance of Galvanized Zinc and Zinc-aluminum Alloy for High Strength Steel Cables

作　　者：王志刚 朱晓雄 赵军 陈建峰 夏伟[3] 何建平[3] WANG Zhigang;ZHU Xiaoxiong;ZHAO Jun;CHEN Jianfeng;XIA Wei;HE Jianping(Jiangsu Tokyo Rope Co.,Ltd.,Wuxi 214000,China;Jiangsu Fasten Cable Co.,Ltd.,Wuxi 214445,China;Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]江苏东纲金属制品有限公司,无锡214000 [2]江苏法尔胜缆索有限公司,无锡214445 [3]南京航空航天大学,南京210016

出　　处：《腐蚀与防护》2021年第7期25-29,65,共6页Corrosion & Protection

摘　　要：采用SEM、EDS、间歇式中性盐雾加速试验和电化学测试等对热镀锌和热镀锌铝合金高强度钢丝的镀层结构和耐蚀性能进行了对比研究。结果表明:镀锌层由疏松且耐腐蚀性较差的纯Zn相和Fe-Zn相组成,而锌铝合金镀层组织主要由均匀致密且耐蚀性较好的Zn-Al相和Fe-Zn-Al相组成;镀锌铝合金钢丝的耐蚀能力是镀锌钢丝的2~3倍,同时,在高应力下镀锌铝合金镀层对钢丝仍具有较好的防护作用。SEM,EDS,intermittent neutral salt spray accelerated test and electrochemical test were used to compare the coating structure and corrosion resistance of hot-dip galvanized and hot-dip galvanized aluminum alloy of high-strength steel wire.The results showed that the galvanized layer was composed of pure Zn phase and Fe-Zn phase that were loose and had poor corrosion resistance.The zinc-aluminum alloy coating structure was mainly composed of Zn-Al phase and Fe-Zn-Al phase,which were uniform and dense and had good corrosion resistance.The corrosion resistance of galvanized aluminum alloy steel wire was 2-3 times better than that of galvanized steel wire.At the same time,the galvanized aluminum alloy coating still had a good protective effect on the steel wire under high stress condition.

关 键 词：高强度钢丝 热镀锌 热镀锌铝合金 微观组织 耐蚀性 

分 类 号：TG174[金属学及工艺—金属表面处理]