Self-degradation of micro-arc oxidation/chitosan composite coating on Mg-4Li-1Ca alloy
文献类型：期刊论文
| 作者 | Yu, C; Cui, LY; Zhou, YF; Han, ZZ; Chen, XB; Zeng, RC; Zou, YH; Li, SQ; Zhang, F6; Han, EH |
| 刊名 | SURFACE & COATINGS TECHNOLOGY
 |
| 出版日期 | 2018-06-25 |
| 卷号 | 344页码:1-11 |
| ISSN号 | 0257-8972 |
| 关键词 | Magnesium alloy Micro-arc oxidation Chitosan Coating Biomaterial |
| DOI | 10.1016/j.surfcoat.2018.03.007 |
| 英文摘要 | Regulating degradation rate and moderate pH micro-environment for biodegradable magnesium alloys face huge challenge. The chemical and morphological characteristics of micro-arc oxidation (MAO) and chitosan (CS) composite coatings, fabricated on Mg-4Li-1Ca alloy, are analyzed through field-emission scanning electronic microcopy, energy dispersive X-ray spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy. Corrosion resistance of the samples is evaluated via hydrogen evolution, potentiodynamic polarization and electrochemical impedance spectroscopy in Hank's solution. Results indicated that the MAO and CS coating enhances the corrosion resistance and antibacterial growth activity. With increasing immersion time, the degradation of the MAO/CS coatings gives rise to a decrease in pH value and leads to a rapid increase in hydrogen evolution rate after an immersion in Hank's solution after 100 h. The MAO/CS coatings retain the solution pH at a moderate level (<= 8.25). A novel self-degradation mechanism of the MAO/CS coating on Mg-Li-Ca alloy is proposed due to the fact that MAO/CS coating is cathodic relative to the substrate. |
| 学科主题 | Materials Science, Coatings & Films ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000437391300001 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80147]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.[Yu, Chi 2.Cui, Lan-Yue 3.Zhou, Yong-Feng 4.Han, Zhuang-Zhuang 5.Zeng, Rong-Chang 6.Li, Shuo-Qi 7.Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Peoples R China 8.RMIT Univ, Sch Engn, Carlton, Vic 3053, Australia 9.Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Peoples R China 10.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, C,Cui, LY,Zhou, YF,et al. Self-degradation of micro-arc oxidation/chitosan composite coating on Mg-4Li-1Ca alloy[J]. SURFACE & COATINGS TECHNOLOGY,2018,344:1-11. |
| APA | Yu, C.,Cui, LY.,Zhou, YF.,Han, ZZ.,Chen, XB.,...&Guan, SK.(2018).Self-degradation of micro-arc oxidation/chitosan composite coating on Mg-4Li-1Ca alloy.SURFACE & COATINGS TECHNOLOGY,344,1-11. |
| MLA | Yu, C,et al."Self-degradation of micro-arc oxidation/chitosan composite coating on Mg-4Li-1Ca alloy".SURFACE & COATINGS TECHNOLOGY 344(2018):1-11. |
入库方式： OAI收割
来源：金属研究所
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