2023.3,3（2）|专题:桥梁用高性能钢材桥梁缆索用高强度Zn-10%Al-RE合金镀层钢丝耐蚀性能研究与应用夏浩成1，赵军2，朱晓雄1，王志刚1，章盛1，肖国豪1（1.江苏东纲金属制品有限公司，江苏无锡214445；2.江苏法尔胜缆索有限公司，江苏无锡214445）摘要：对桥梁缆索用高强度纯锌镀层、Zn-5%Al-RE合金镀层和Zn-10%Al-RE合金镀层钢丝的镀层组织及耐蚀性能进行了对比研究。研究结果表明，Zn-10%Al-RE合金镀层由于Al含量的提高，镀层中Zn-Al共晶相的比例较Zn-5%Al-RE合金镀层更大，且具有更多耐腐蚀的富铝相，说明其具有更好的耐蚀性能。从电化学分析和中性盐雾试验结果来看，纯锌镀层的自腐蚀电流密度约为Zn-10%Al-RE合金镀层的3倍，不同时间下的中性盐雾腐蚀失重为纯锌镀层的3.9~5.7倍，说明其在同一腐蚀环境中的耐蚀性能至少能够达到纯锌镀层的3倍以上。关键词：桥梁缆索钢丝；Zn-10%Al-RE合金镀层；电化学分析；盐雾试验；耐蚀性能ApplicationandcorrosionresistanceresearchofhighstrengthZn-10%Al-REalloycoatedsteelwireforbridgecablesXIAHaocheng1,ZHAOJun2,ZHUXiaoxiong1,WANGZhigang1,ZHANGSheng1,XIAOGuohao1（1.JiangsuTokyoRopeCo.Ltd.，Wuxi214445，China；2.JiangsuFastenCableCo.Ltd.，Wuxi214445，China）Abstract：Inthispaper，themicrostructureandcorrosionresistanceofhighstrengthpurezinccoating，Zn-5%Al-REalloycoatingandZn-10%Al-REalloycoatingsteelwireforbridgecablearestudied.TheresultsshowthattheproportionofZn-AleutecticphaseinZn-10%Al-REalloycoatingislargerthanthatofZn-5%Al-REalloycoatingduetotheincreaseofAlcontent，whichindicatesthatthecoat-inghasbettercorrosionresistance.Accordingtotheresultsofelectrochemicalanalysisandneutralsaltspraytest，theself-corrosioncurrentdensityofpurezinccoatingisabout3timesofthatofZn-10%Al-REalloycoating，andtheweightlossofneutralsaltspraycorrosionis3.9-5.7timesofthatofpurezinccoatingunderdifferenttime，whichindicatesthatthecorrosionresistancecanbeatleast3timesofthatofpurezinccoatinginthesamecorrosionenvironment.Keywords：bridgecablesteelwire；Zn-10%Al-REalloycoating；electrochemicalanalysis；saltspraytest；corrosionresistance中图分类号:U443.38；TG174.4文献标志码:A文章编号：2097-017X（2023）02-0032-08收稿日期：20...
