原板酸洗失重性能对镀锡板耐蚀性的影响

Effects of Weight Loss Character of Black Plate on Corrosion Resistance of Tinplate

通过测试不同耐蚀性的镀锡板的原板酸洗失重速率 ,研究了原板酸洗失重性能对镀锡板耐蚀性的影响 ,并采用金相显微镜、辉光放电光谱仪 (GDS)、扫描电镜 (SEM )和原子间力显微镜 (AFM )研究了影响机理。研究结果表明 :原板酸洗失重性能对镀锡板耐蚀性影响显著 ,随着原板酸洗失重速率上升 ,镀锡板耐蚀性上升 ;原板酸洗失重性能对镀锡板耐蚀性的影响是通过以下链式关系实现的 :酸洗失重性能影响了原板镀前铁晶粒暴露程度 ,铁晶粒暴露程度又影响了软熔后的锡铁合金层结构 ,锡铁合金层结构又影响了镀锡板耐蚀性。

The effects of picking weight loss character of black plate on the corrosion resistance of tinplate are studied by measuring weight loss velocity of black plate of tinplates with different corrosion resistance. The mechanism of the effects is also studied with the aid of metalloscope, GDS, SEM and AFM. The research results show that weight loss character of black plate has a remarkable influence on the corrosion resistance of tinplate. The corrosion resistance of tinplate will increase as the weight loss velocity of black plate increases. The effects are realized through the following chain structure: the weight loss character of black plate influences the exposure degree of iron grain before plating, and the exposure degree of iron grain influences the structure of FeSn 2 alloy layer, then the structure of FeSn 2 alloy layer influences the corrosion resistance of tinplate.