Materials Reports  2019, Vol. 33 Issue (z1): 283-287 |
| METALS AND METAL MATRIX COMPOSITES |
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| Preparation and Properties of Magnesium Powder with Calcium Phosphate Coatings |
| WAN Ye1, LIU Jing1,2, TAN Lili2, CHEN Junxiu2, DONG Jiahui2, YANG Ke2
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1 School of Materials Science and Engineering, Shenyang Jianzhu University,Shenyang 110168
2 Institute of Metal Research,Chinese Academy of Sciences, Shenyang 110016 |
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Abstract The corrosion resistance of magnesium powder is poor, therefore, a suitable Ca-P coating is prepared on the surface of magnesium powder. The coating not only can improve the corrosion resistance of magnesium powder, but also increase the osteogenesis ability of the powder. After the treatment of magnesium powder with fluorine, followed two different Ca-P coatings are prepared. One is that the magnesium powder after fluorine treatment was directly immersed in the calcium phosphate mixture solution, and the calcium phosophate coating was formed on the surface by deposition. Another coating was prepared by the deposition of polydopamine (PDA) firstly after fluorine treatment, followed by calcium phosphate deposition method. The microstructures and structures of magnesium powder with different coatings were analyzed. The corrosion resistance of the surface coating of magnesium powder was analyzed by immersion test. The results showed that the HF/PDA/Ca-P coating was thicker, about 2.3 μm, and its corrosion resistance was better than that of the HF/Ca-P-coated magnesium powder, about 1.5 μm. The HA deposited on the surface of the HF/PDA/Ca-P coating was thicker than the HA deposited on the HF/Ca-P coating. The corrosion resistance of the HF/PDA/Ca-P coating was the best, which is mainly attributed to the ability of adhesion and corrosion resistance of PDA.
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Published: 05 July 2019
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| About author:: Ye Wan received her Ph.D, degree in engineering from the Institute of Metal Research Chinese Academy of Sciences (IMR) in 2005. Master’s tutor, she is a professor at Shenyang Jianzhu University, Academic Director of Materials Physics and Chemistry. She has worked at the University of Virginia, And was hired as Senior Scientist. member of the International Electrochemical Association and American Society of Corrosion Engineers , National Natural Science Foundation Review Expert, Liaoning Science and Technology Review Expert, Shenyang Science and Technology Review Expert, Won the “Liaoning Excellent Science and Technology Talents” and “My Good Teacher”. Honorary titles such as “advanced female faculty and staff” and “excellent graduate instructor”. |
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