镀锌板的腐蚀变色机理分析  

Mechanism Analysis of Corrosive Color Changes of Galvanized Sheet

作　　者：杨洪刚 吕家舜 徐闻慧 李锋 武婷玉 姜效军[2] YANG Hong-gang;LYU Jia-shun;XU Wen-hui;LI Feng;WU Ting-yu;JIANG Xiao-jun(Ansteel Research Institute of Iron&Steel,Anshan 114001,China;School of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]鞍钢集团钢铁研究院,辽宁鞍山114001 [2]辽宁科技大学化工学院,辽宁鞍山114051

出　　处：《材料保护》2019年第11期13-16,共4页Materials Protection

基　　金：鞍钢重大科技攻关课题(HZ20188011)资助

摘　　要：无铬钝化镀锌板在加工使用前偶尔有腐蚀变黑发生,严重影响产品质量。利用激光共聚焦显微镜探索了热镀锌板腐蚀变黑的潜在原因,利用原子力显微镜考察了镀锌板无铬钝化膜的微观结构,分析了96 h盐雾后微小黑斑的腐蚀形貌,利用衰减全反射红外光谱(ATR-FTIR)技术和内标比值法定量分析变黑部位基团变化值。For the chromium-free galvanized sheet,the phenomenon of corrosion blackening occurs occasionally before the next processing,which affects the quality of products seriously.In this paper,the underlying causes of corrosion blackening of hot-dip galvanized sheet were investigated by laser con-focal microscopy,and the microstructure of chrome-free passivation film of galvanized sheet was observed by atomic force microscopy.The morphology of tiny black spots of samples undergoing salt spray for 96 h was analyzed.Moreover,the change value of chemical groups in blackened part was analyzed quantitatively by attenuated total reflection flourier transformed infrared spectroscopy(ART-FTIR)and internal standard ratio method.

关 键 词：热镀锌钢板 钝化膜 激光共聚焦显微技术 原子力显微技术 腐蚀变黑机理 

分 类 号：TG174.443[金属学及工艺—金属表面处理] O657[金属学及工艺—金属学]