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表面粗糙度对热浸镀锌镀层特征及耐蚀性的影响
Effect of Surface Roughness on Characteristics and Corrosion Resistance of Hot Dip Galvanized Coating
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- DOI:
- 作者:
- 兰明清 田亚强
LAN Mingqing;TIAN Yaqiang
- 作者单位:
- 唐山创新钢铁产业技术有限公司 华北理工大学冶金与能源学院
Tangshan Innovation Steel Industry Technology Co.,Ltd.,Tangshan063000,China;School of Metallurgy and Energy,North China University of Science and Technology,Tangshan063210,China
- 关键词:
- 热浸镀锌 均匀性 粗糙度 锌花大小
hot-dip galvanizing uniformity roughness the size of spangle
- 摘要:
- 为提升热浸镀锌钢板的表面质量,将热镀锌钢板进行连续热浸镀锌试验生产,采用场发射扫描电镜、显微镜和盐雾实验等手段,对生产试验的镀锌板进行相关的实验分析,研究了热浸镀锌基板表面粗糙度对含Sb和Pb的热浸镀镀锌板锌花尺寸均匀性和镀层厚度及物相组成特征的影响,以及锌花大小与耐腐蚀性的关系。结果表明:基板表面粗糙度越大,锌花尺寸越小且镀层厚度也小,δ相层中Fe元素含量较大,耐腐蚀性能较好。In order to promote the surface quality of hot-dip galvanized steel sheet,galvanized steel to continuous hot-dip galvanizing trial production,by field emission scanning electron microscope(SEM),microscope and salt fog test,the related experiment analysis test of galvanized sheet production.The influence of surface roughness on the size uniformity,coating thickness and phase composition of hot-dip zinc-plated sheet containing Sb and Pb were studied.The results show that the larger the surface roughness of the substrate,the smaller the size of the spangle and the smaller the coating thickness,the greater the content of Fe inδphase layer and the better the corrosion resistance.