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
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。
热镀锌
热镀锌铝合金
微观组织
耐蚀性
highstrength steel wire
hot-dip galvanizing
hot-dip Zn-Al alloy
microstructure
corrosion resistance
Abstract
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.
中图分类号 TG174 DOI 10.11973/fsyfh-202107005
所属栏目 试验研究
基金项目
收稿日期 2019/12/15
修改稿日期
网络出版日期
作者单位点击查看
联系人作者朱晓雄(zxx621@126.com)
引用该论文: WANG Zhigang,ZHU Xiaoxiong,ZHAO Jun,CHEN Jianfeng,XIA Wei,HE Jianping. Performance of Galvanized Zinc and Zinc-aluminum Alloy for High Strength Steel Cables[J]. Corrosion & Protection, 2021, 42(7): 25
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