(1. 哈爾濱工業(yè)大學(xué) 應(yīng)用化學(xué)系， 哈爾濱 150001;
2. Engineering Department，Kyoto University， Kyoto 606-8283， Japan)
摘 要: 研究了實(shí)驗(yàn)室條件下鍍液中錫泥的量對(duì)軟熔后鍍層表面黑灰的量以及鍍層耐蝕性的影響。通過XPS等測(cè)試發(fā)現(xiàn)，錫泥的主要成分為二氧化錫，其相應(yīng)鍍層在高溫軟熔后產(chǎn)生的黑灰的主要成分也為二氧化錫。結(jié)果表明，隨著鍍液中錫泥量的增加，軟熔后鍍層表面的黑灰程度增加。通過對(duì)表征鍍層耐蝕性的合金電偶電流值及酸洗時(shí)滯的測(cè)試發(fā)現(xiàn)，隨著錫泥投入量的增加，鍍層的耐蝕性下降，且兩者之間有很好的對(duì)應(yīng)關(guān)系。
關(guān)鍵字: 電鍍錫鋼板； 錫泥； 黑灰； 耐蝕性
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
