通过监测镀液吸光度和Sn2+含量随甲磺酸(MSA)高速镀锡液中铁离子(Fe2+和Fe3+)含量的变化,分析了镀液中Sn2+氧化水解速率与铁离子的关系.结果表明,在简单盐溶液体系中,Sn2+先氧化生成Sn4+,再水解生成偏锡酸沉淀.Fe3+氧化Sn2+而生成的锡泥是影响镀液浊度的主要因素.Fe2+含量为5~15 g/L时,Fe2+对Sn2+的氧化有稳定的减缓作用;Fe2+含量为10g/L时对Sn2+氧化水解的减缓作用最强.鼓气加速Sn2+氧化水解的试验表明,Fe2+含量为10g/L的镀液中Sn2+质量浓度与鼓气时间呈线性关系.
参考文献
[1] | LOW C T J;WALSH F C .Electrodeposition of tin,copper and tin-copper alloys from a methanesulfonic acid electrolyte containing a perfluorinated cationic surfactant[J].Surface and Coatings Technology,2008,202(8):1339-1349. |
[2] | FUKUDA M;IMAYOSHI K;MATSUMOTO Y .Effect of adsorption of polyoxyethylene laurylether on electrodeposition of Pb-free Sn alloys[J].Surface and Coatings Technology,2003,169/170:128-131. |
[3] | BARRY F J;CUNNANE V J .Synergistic effects of organic additives on the discharge,nucleation and growth mechanisms of tin at polycrystalline copper electrodes[J].Journal of Electroanalytical Chemistry,2002,537(1/2):151-163. |
[4] | LEE J Y;KIM J W;CHANG B Y et al.Effects of ethoxylated α-naphtholsulfonic acid on tin electroplating at iron electrodes[J].Journal of the Electrochemical Society,2004,151(5):C333-C341. |
[5] | 牛振江;林飞峰;杨防祖 等.钒化合物对酸性镀锡溶液的稳定作用[J].电化学,2001,7(1):90-95. |
[6] | LOW C T J;WALSH F C .The stability of an acidic tin methanesulfonate electrolyte in the presence of a hydroquinone antioxidant[J].Electrochimica Acta,2008,53(16):5280-5286. |
[7] | 龙有前;肖鑫;郭贤烙 .酸性镀锡液不稳定性研究[J].材料保护,2003,36(3):47-48. |
[8] | MEIBUHR S G .Complexing between tin ions and phenolsulphonic acid[J].Electrochimica Acta,1968,13(4):831-834. |
[9] | SIBY F;POTIN-GAUTIER M;GIFFAUT E et al.A critical review of thermodynamic data for inorganic tin species[J].Geochimica et Cosmochimica Acta,2001,65(18):3041-3053. |
[10] | 方景礼.电镀配合物一理论与应用[M].北京:化学工业出版,2007:515-518. |
[11] | 袁诗璞 .酸性镀锡液中的阳极与p-锡酸[J].电镀与涂饰,2013,32(9):34-38. |
[12] | 杨熙珍;杨武.金属腐蚀电化学热力学:电位-pH图及其应用[M].北京:化学工业出版社,1991:121-122. |
[13] | LIDE D R.CRC Handbook of Chemistry and Physics[M].Boca Raton,FL:CRC Press,2010:8-21-8-28. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%