(1. 哈尔滨工业大学 应用化学系， 哈尔滨 150001;
2. Engineering Department，Kyoto University， Kyoto 606-8283， Japan)
摘 要: 研究了实验室条件下镀液中锡泥的量对软熔后镀层表面黑灰的量以及镀层耐蚀性的影响。通过XPS等测试发现，锡泥的主要成分为二氧化锡，其相应镀层在高温软熔后产生的黑灰的主要成分也为二氧化锡。结果表明，随着镀液中锡泥量的增加，软熔后镀层表面的黑灰程度增加。通过对表征镀层耐蚀性的合金电偶电流值及酸洗时滞的测试发现，随着锡泥投入量的增加，镀层的耐蚀性下降，且两者之间有很好的对应关系。
关键字: 电镀锡钢板； 锡泥； 黑灰； 耐蚀性
corrosion resistance of tinplating
（1.Department of Applied Chemistry，Harbin Institute of Technology，
Harbin 150001，P.R.China；
2. Engineering Department，Kyoto University， Kyoto 606-8283， Japan）
Abstract: The effect of the content of tin sludge in bath on the smudge and corrosion resistance on the surface of tinplating was studied. It was found that there is intimate connection between the composition of tin sludge and the composition of smudge. With the increase of sludge added to bath，the degree of smudge on the surface of coating after reflowing increases. The results of XPS show the main composition of tin sludge is stannic oxide，so is the composition of smudge. In addition，by means of ISV and ATC value testing which characterize the corrosion resistance of coating, it was found that the corrosion resistance of coating declines with the increase of sludge. Consequently，it is very necessary to control the content of sludge in the bath by means of continuous filtration in the process of electroplating.
Key words: tinplating； sludge； smudge； corrosion resistance
