Al-Ni-Re微合金热镀锌层成分设计与性能研究  

Research on the composition design and performance of Al-Ni-Re micro-alloyed hot-dip galvanized coating

作　　者：郭雷 刘长春 张婧 殷子强 李波 GUO Lei;LIU Changchun;ZHANG Jing;YIN Ziqiang;LI Bo(Jinan Mech Piping Technology Co.,Ltd,Jinan 250400,China;Institute of Oceanographic Instrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266061,China;School of Mechanical Engineering,University of Jinan,Jinan 250022,China)

机构地区：[1]济南迈科管道科技有限公司,山东济南250400 [2]齐鲁工业大学(山东省科学院)山东省科学院海洋仪器仪表研究所,山东青岛266100 [3]济南大学机械工程学院,山东济南250022

出　　处：《山东科学》2025年第1期44-52,共9页Shandong Science

基　　金：国家自然科学基金项目(51305245、51505267、51805303);山东省自然科学基金项目(ZR2012EEQ013、ZR2020ME150);山东省科技型中小企业创新能力提升工程项目(2022TSGC1130)。

摘　　要：为解决传统纯锌镀层耐蚀性不足的问题,以直径为30 mm的Q195焊管为基体,通过向锌液中微量添加Al、Ni、Re等合金元素,制备了一系列热镀锌合金镀层。通过四因素三水平正交试验初步确定影响指标的主要因素,针对主要因素进一步细化实验水平,开展单因素试验,从而获得最优参数组合。采用高低温湿热实验、中性盐雾实验、金相分析、SEM等方法研究分析了镀层的组织特征和耐腐蚀性能。结果表明,合金元素的引入抑制了ζ层生长,使得镀层组织细小致密,提高了镀层的耐蚀性。制备的镀层可实现盐雾实验72 h、湿热实验120 h表面无锈蚀。该镀层的制备工艺与现有纯锌镀层生产工艺基本相同,具有良好的可推广性,对镀锌产品性能提升具有重要意义。To improve the corrosion resistance of traditional pure Zn coatings,we used 30 mm diameter Q195 welded pipes as the substrate and prepared a series of hot-dip galvanized alloy coatings by adding trace amounts of alloy elements such as Al,Ni,and Re to the Zn bath.First,the main factors affecting corrosion resistance were identified through a four-factor and three-level orthogonal experiment.Then,the experiment was further improved for the primary factors,and single-factor experiments were conducted to obtain the optimal parameter combination.Finally,the microstructure characteristics and corrosion resistance of the coating were studied and analyzed using methods such as high and low temperature humidity test,neutral salt spray test,metallographic analysis,and scanning electron microscopy.Results indicate that the introduction of alloying elements suppresses the growth ofζlayer,which makes the coating structure compact,and improves the corrosion resistance of the coating.The coating prepared in this study could remain rustless throughout a 72 h salt spray test and a 120 h humidity test.The process for preparing the alloy coating is same as the existing production process for traditional Zn coatings.

关 键 词：热浸镀 镀锌 合金镀层 圣德林效应 

分 类 号：TG174.4[金属学及工艺—金属表面处理]