電化學沉積製備MgO-MgCO3/Al(OH)3與MgO-MgCO3/HA雙層鍍層於純鎂上
以提升抗蝕性之研究

杜允中

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電化學沉積製備MgO-MgCO3/Al(OH)3與MgO-MgCO3/HA雙層鍍層於純鎂上以提升抗蝕性之研究

The Study of MgO-MgCO3/Al(OH)3 and MgO-MgCO3/HA Double Layer Coatings on Pure Magnesium by Electrolysis for Increasing Corrosion Resistance

杜允中 , Masters　　Advisor：顏秀崗　　

繁體中文

碳酸鎂；氧化鎂；氫氧化鋁；氫氧基磷灰石； magnesium carbonate ； magnesium oxide ； aluminum hydroxide ； hydroxyapatite

Abstract │ Reference (45) │ Altmetrics

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In this study, we try to prepare MgO-MgCO3/ Al(OH)3 and MgO-MgCO3/HA double layer coatings on pure magnesium using electrochemical deposition in order to increase corrosion resistance and provide functional surface for biomaterials. The coatings were characterized by XRD, SEM, FIB, XPS and dynamic polarization after annealing treatment. It was found that the first layer is MgCO3 / Mg(OH)2 composite coating and a thin layer of MgO on the top of it. The main structure of Al(OH)3 coating was Gibbsite. The Ca/P ratio of HA coating was 1.31 similar to Octacalcium Phosphate (OCP). Although the Al(OH)3 coating is relatively loose, it exhibits the best corrosion resistance due to its good chemical inertness. The MgCO3-MgO layer has good uniformity with only 0.2~0.5μm thickness but its corrosion resistance is better than that of the porous HA layer with 6μm thickness. However, dynamic polarization results show that both single layer MgO-MgCO3 or double layer MgO-MgCO3/Al(OH)3 or MgO-MgCO3/HA coating can increase the corrosion resistance of pure magnesium.

Reference ( 45 ) 〈TOP〉

1. Altun, H., & Sen, S. The Effect of PVD Coatings On The Corrosion Behaviour of AZ91 Magnesium Alloy. Materials & Design, 2006, 27(10), pp. 1174-1179.
連結：
2. Ambat, R., Aung, N. N., & Zhou, W. Evaluation Of Microstructural Efects On Corrosion Behaviour Of AZ91D Magnesium Alloy. Corrosion Science, 2000, 42, pp. 1433-1455.
連結：
3. Ambat, R., Aung, N. N., & Zhou, W. . Studies On The Infuence Of Chloride Ion And Ph On The Corrosion And Electrochemical Behaviour Of AZ91D Magnesium Alloy. Journal of Applied Electrochemistry, 2000, 30, pp. 865-874.
連結：
4. Barrere, F., Layrolle, P., Van Blitterswijk, C. A., & De Groot, K. Biomimetic Calcium Phosphate Coatings On Ti6al4v: A Crystal Growth Study Of Octacalcium Phosphate And Inhibition By Mg2+ And HCO3-. Bone, 1999, 25(2), pp. 107S-111S.
連結：
6. Brown, G. The X-Ray Identification And Crystal Structures Of Clay Minerals. Mineralogical Society, Clay Minerals Group. 1961.
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