| QIAO Yong-lian,XU Qian,LIU Hui-jun,MENG Wei-wei,LI Cheng-cai,ZHAI Yu-chun.Preparation and Characterization of Nickel Coating on Conductive Plastic by Electrodeposition[J],37(2):1-3,7 |
| Preparation and Characterization of Nickel Coating on Conductive Plastic by Electrodeposition |
| Received:December 13, 2007 Revised:April 10, 2008 |
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| DOI： |
| KeyWord:Electroplating Nickel plating Conductive plastic Corrosion behavior NaCl solution |
| Author | Institution |
| QIAO Yong-lian |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
| XU Qian |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
| LIU Hui-jun |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
| MENG Wei-wei |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
| LI Cheng-cai |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
| ZHAI Yu-chun |
School of Material and Metallurgy, Northeastern University, Shenyang , China |
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| Abstract: |
| In order to enhance the surface hardness, electronic conductivity of conductive plastic , nickel coating was prepared on its surface by electroplating. The effects of bath temperature and coating time on nickel deposition rate were investigated, and the relationship between cathodic current density and the deposition rate was involved in as well. The surface morphology and cross-sectional microstructure of the Ni-coating were examined by scan electron microscope and optical microscope, respectively. The adhesion between the coating and substrate was evaluated by pull-off test, and corrosion behavior of the coating was studied by electrochemical methods. The results show that the average electrochemical nickel deposition rate is 0. 68 μm /min on the condition of cathodic current density of 2. OA/dm2 and bath temperature of 60℃ . The exoteric morphology of the coating can inherit some from the surface characteristic of the substrate, and the adhesion between of the coating and substrate is more than 2. 3MPa. The corrosion potential of the shining coating in NaCI aqueous solution is more positive than that of the dull coating, and anodic dissolving rate of the shining one is also far lower at the same polarization potential compared with the dull. |
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