Hydroxyapatite (HA) Modified Nanocoating Enhancement on AZ31 Mg Alloy by Combined Surface Mechanical Attrition Treatment and Electrochemical Deposition Approach

被引：23
作者：
Du, Huayun [1 ,2 ]
Ana, Yanli [3 ]
Zhang, Xilu [1 ]
Wei, Yinghui [1 ,4 ]
Hou, Lifeng [1 ]
Liu, Baosheng [1 ]
Liu, Hu [2 ,5 ]
Zhang, Jiaoxia [2 ,6 ]
Wang, Ning [7 ]
Umar, Ahmad [8 ,9 ]
Guo, Zhanhu [2 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Univ Tennessee, Dept Chem & Biomol Engn, ICL, Knoxville, TN 37996 USA
[3] Shanxi Med Univ, Coll Basic Med, Taiyuan 030001, Shanxi, Peoples R China
[4] Shanxi Inst Technol, Yangquan 045000, Shanxi, Peoples R China
[5] Zhengzhou Univ, Natl Engn Res Ctr Adv Polymer Proc Technol, Zhengzhou 450002, Henan, Peoples R China
[6] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[7] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
[8] Najran Univ, Fac Sci & Arts, Dept Chem, Najran 11001, Saudi Arabia
[9] Najran Univ, PCSED, Najran 11001, Saudi Arabia
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2019年 / 19卷 / 02期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Electrodeposition; Coatings; Hydroxyapatite; Surface Mechanical Attrition Treatment; AZ31 Mg Alloy; CARBON NANOTUBES; MAGNESIUM ALLOY; CORROSION; LAYER; GRAPHENE; IRON; AL; NANOCOMPOSITES; PERFORMANCE; NANOCRYSTALLIZATION;
D O I：
10.1166/jnn.2019.15746
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hydroxyapatite (HA) nanocoating was electrodeposited on the surface mechanical attrition treated (SMATed) AZ31 magnesium alloy. Phases, morphologies and the adhesion of coating were characterized by X-ray diffraction, scanning electron microscopy (SEM) and 3D optical profiler. The corrosion resistance of the HA coating was tested by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results showed that the HA coating on SMATed sample had a better crystallization than that on original one. The thickness of HA coating increased from 25 to 40 mu m. The bonding strength between HA coating and SMATed substrate was higher than that between the coating and untreated counterpart. Potentiodynamic polarization and EIS demonstrated that the corrosion current density of HA coating on SMATed substrate decreased by 30.84% than that on original. The corrosion potential shifted 80.3 mV to the positive direction. The corrosion resistance of coatings on SMATed sample was significantly enhanced. The immersion experiments showed that the HA coatings on SMATed sample exhibited a better biological activity.
引用
收藏
页码：810 / 818
页数：9
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