镀锡板311钝化膜与71钝化膜的组织结构对比  

Comparative analysis of microstructures of 311 and 71 passivation films on tinplates

作　　者：沈鹏杰 齐韦 万一群[1] 莫志英 方圆[1] 潘红良 SHEN Pengjie;QI Wei;WAN Yiqun;MO Zhiying;FANG Yuan;PAN Hongliang(Shougang Jingtang United Iron&Steel Co.,Ltd.,Tangshan 063000,China;Shanghai Wubao Mechatronic Technology Co.,Ltd.,Shanghai 200940,China)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200 [2]上海务宝机电科技有限公司,上海201900

出　　处：《电镀与涂饰》2024年第8期34-41,共8页Electroplating & Finishing

摘　　要：[目的]镀锡板的钝化工艺会影响其漆膜附着力,分析不同钝化工艺所得钝化膜的结构差异具有重要的意义。[方法]使用X射线光电子能谱仪(XPS)对不同厂家生产的311钝化镀锡板和71钝化镀锡板进行测试,逐层分析0~50 nm深度范围内的Cr、Sn、O、Fe元素含量及其化学状态。[结果]311钝化镀锡板与71钝化镀锡板边部和中部钝化膜的厚度、覆盖率和层间结构均有所不同,71钝化膜具有较佳的漆膜附着力。[结论]71钝化膜底层的Cr及表层的Cr(OH)3对提高镀锡板附着力具有至关重要的作用。[Introduction]The passivation process of tinplate affects the adhesion of paint on its surface.It is of great significance to analyze the structural differences of passivation films obtained by different processes.[Method]The tinplates passivated by 311 process or 71 process from different manufacturers were tested by using X-ray photoelectron spectrometer(XPS)to analyze the content and chemical states of Cr,Sn,O,and Fe layer by layer at the depth ranging from 0 to 50 nm.[Result]The thickness,coverage,and interlayer structure of the passivation films at the edge and middle of the 311 and 71 passivated tinplates were different.The 71 passivation film had better paint adhesion than the 311 passivation film.[Conclusion]Cr existing in the inner layer and Cr(OH)3 existing in the outer layer of 71 passivation film play a key role in enhancing the adhesion of paint on tinplate.

关 键 词：镀锡板 钝化 漆膜附着力 结构 

分 类 号：TQ153.6[化学工程—电化学工业]