太原理工大学学报Issue(4)：375-379,384,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2015.04.002
AZ31镁合金表面羟基磷灰石涂层的制备和表征
Formation and Characterization of Hydroxyapatite Coating on the Surface of AZ31
摘要
Abstract
In this paper ,Ca(OH)2 and Ca(H2 PO4 )2 ・H2 O were used as raw materials to pre‐pare a hydroxyapatite coating on the surface of AZ 31 magnesium alloy using a sol‐gel technique . Phase analysis ,surface morphology study ,and cross‐section and microstructure characterization of the hydroxyapatite coating were conducted .Potentiodynamic polarization curves and electro‐chemical impedance spectra were obtainod using electrochemical workstation .Hydrogen evolution rates and corrosion morphologies of the coating immersed in Hank ’s solution were also presen‐ted .T he results indicate that the thickness of hydroxyapatite coating is approximately 8 μm and the corrosion current density of hydroxyapatite coating is 1.486 4 × 10 -2 mA/cm2 ,which is 5 times lower than that of bare AZ31 magnesium alloy .Hydrogen evolution tests and immersion corrosion morphologies further illustrate that hydroxyapatite coating can slow dow n the rate of biodegradation of AZ31 magnesium alloy effectively .关键词
生物材料/羟基磷灰石涂层/溶胶凝胶法/AZ31镁合金/耐蚀性Key words
biomaterials/hydroxyapatite coating/sol-gel/AZ31 magnesium alloy/corrosion resistance分类
矿业与冶金引用本文复制引用
..AZ31镁合金表面羟基磷灰石涂层的制备和表征[J].太原理工大学学报,2015,(4):375-379,384,6.基金项目
国家自然科学基金资助项目金属材料表面合金层原位形成过程中同步扩散行为的研究（51001079）；高等学校博士点专项科研基金资助项目（20091402110010）；教育部中国博士后科学基金资助项目（20100471586）；山西医科大学青年基金资助项目 （）
