| SHU Xu-gang,LIAO Lie-wen,HE Xiang-zhu,HUANG Hui-min.The Mechanism of Trivalent Chromium Electrodeposition and Electrocrystallization from Trivalent Chromium in Chloride System[J],39(2):1-4,13 |
| The Mechanism of Trivalent Chromium Electrodeposition and Electrocrystallization from Trivalent Chromium in Chloride System |
| Received:November 30, 2009 Revised:April 10, 2010 |
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| DOI： |
| KeyWord:trivalent chromium electrodeposition mechanism |
| Author | Institution |
| SHU Xu-gang |
Zhongkai University of Agriculture and Engineering, Guangzhou , China |
| LIAO Lie-wen |
Zhongkai University of Agriculture and Engineering, Guangzhou , China |
| HE Xiang-zhu |
Guangdong University of Technology, Guangzhou , China |
| HUANG Hui-min |
Guangdong University of Technology, Guangzhou , China |
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| Abstract: |
| The mechanism of trivalent chromium electrodeposition and electrocrystallization from trivalent chromium in chloride system has been explored by using several kinds of electrochemical methods, such as cyclic voltammetry, chronopotentiometry, steady-state-polarization.[Cr(H2O)6] 3+ reduction process is controlled by electrochemical reaction.[Cr(H2O)6] 3+ gets three electrons by two steps,their apparent activation energy is measured,one is 34.9 kJ/mol, the other is 19.77 kJ/mol, the first reducing is rate control step. The middle product,which is electrochemically active and adsorptive,is formed in the first step. |
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