| XIONG Kun,DU Chong-lin,CHEN Zhen,LIAO Deng-hui,WU Jian.Study on Cathodic Polarization of Sn-Zn-La-CeO2 Composite Electro-plating Process[J],(1):9-12 |
| Study on Cathodic Polarization of Sn-Zn-La-CeO2 Composite Electro-plating Process |
| Received:September 30, 2011 Revised:February 20, 2012 |
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| DOI： |
| KeyWord:compositeplating cathodicpolarization rareearths corrosionresistance |
| Author | Institution |
| XIONG Kun |
Kunming Metallurgy College,Kunming , China |
| DU Chong-lin |
Kunming Metallurgy College,Kunming , China |
| CHEN Zhen |
School of Science,Kunming University of Science and Technology,Kunming , China |
| LIAO Deng-hui |
School of Science,Kunming University of Science and Technology,Kunming , China |
| WU Jian |
School of Science,Kunming University of Science and Technology,Kunming , China |
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| Abstract: |
| The cathodic polarization curves of different concentrations of each component in bath were studied and the influence of rare-earth on the content of elements in composites was analyzed.Tafel curves of different coatings were tested in NaCl solution to elaborate the corrosion resistance. The optimum process criterion is obtained, which is SnCl2 20g/L, ZnCl2 40g/L, NH4Cl 80g/L, C6H5Na3O7 35g/L, brightener 15mL/L, auxiliary brightener 16mL/L, LaCl3 12g/L, CeO2 nano-particles 30g/L. It is proved that the addition of rare-earth will hinder the codeposition of Zn and Sn. Composites prepared under such circumstances obtained superior properties and good corrosion resistance. |
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