2011 Fiscal Year Final Research Report
Development of CWD process for surface treatment of magnesium
| Project/Area Number |
22656159
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
HARA Nobuyoshi 東北大学, 大学院・工学研究科, 教授 (40111257)
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| Co-Investigator(Kenkyū-buntansha) |
MUTO Izumi 東北大学, 大学院・工学研究科, 准教授 (20400278)
AKAO Noboru 東北大学, 大学院・工学研究科, 助手 (80222503)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 腐食防食 |
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| Research Abstract |
In order to develop a cyclic wet-dry (CWD)process as a new surface treatment method for improving corrosion resistance of Mg alloys, the composition of starting solution, the process conditions and the corrosion resistance of reaction products have been examined. It was found that hydrotalcite ((Mg_6Al_2(OH)_<16> CO_3・4H_2O))or hydrotalcite-like compounds can be formed under well-controlled CWD conditions using NaCl+ AlCl_3 or Na_2SO_4+ Al_2(SO_4)_3 solutions and they improves the corrosion resistance of Mg alloys.
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