腐蚀
钙
镁
热液循环
材料科学
涂层
冶金
磷酸盐
化学工程
化学
复合材料
生物化学
工程类
作者
Lingyu Li,Lan-Yue Cui,Bin Liu,Xiaobo Chen,Shuoqi Li,Zhenlin Wang,En–Hou Han
标识
DOI:10.1016/j.apsusc.2018.09.203
摘要
Glucose-induced composite coatings containing crystalline calcium phosphate and Mg(OH)2 interlayer were prepared on pure Mg substrate through hydrothermal deposition from alkaline solution. Surface composition, morphology and corrosion resistance of the coatings were characterized through XRD, FTIR, SEM, XPS, electrochemical and hydrogen evolution measurements. Results reveal that calcium phosphate coatings were composed of dicalcium phosphate anhydrous, calcium-deficient hydroxyapatite and hydroxyapatite. Corrosion resistance of pure Mg specimens was improved by the formation of such a calcium phosphate coating. The findings provide a novel strategy to design calcium phosphate conversion coatings with satisfactory corrosion resistance for biodegradable Mg implants.
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