摘要
目的纯镁表面采用超声微弧氧化技术,在电解液中添加AgNO3,探讨其对生物涂层组织及性能影响,为后续抗菌性和生物相容性试验提供实验基础。材料与方法电参数相同条件下,采用硅酸盐系镀液为对照组,在其基础上添加不同含量AgNO3为实验组,观察涂层表面和断面形貌、涂层相结构及成分分析,测定涂层结合力、摩擦系数和电化学腐蚀性能。结果添加AgNO3后,电解液导电能力增强,涂层表面微孔孔径增大,微弧数目减少,致密层更加致密,并有Ag新相产生。随着AgNO3含量增加,涂层结合力变大,摩擦系数变小,耐蚀性提高。结论添加AgNO3后,涂层形成Ag新相,表面微孔孔径增大,致密层更加致密,提高了涂层结合力、耐磨性和耐蚀性。
Objective Silver-containing biocoatings on the surface of pure magnesium were formed using ultrasound micro-arc oxidation technology and adding AgNO3 in the electrolyte, and to investigate the biological effects of silver on the microstructure and performance of the coatings and to provide an experimental basis for subsequent antimicrobial property and biocompatibility tests. Materials and methods Under conditions of the same electrical parameters, taking silicate solution as control group,and AgNO3 solution of different concentrations was added as experimental group. The coating surface, sec- tion morphology, coating structure and composition were observed and analyzed to determine the coating binding force, friction coefficient and electrochemical corrosion properties. Results After the addition of AgNOz, the electrolyte conductivity was enhanced, The diameter of coated surface micro-pores was increased, the number of micro-arc oxidation （MAO） was reduced, the dense layer was more compact, and a new silver phase was generated. Along with the increase of AgNO3 content, the coating binding force was increased, the friction coefficient was reduced, and the corrosion resistance was improved Conclusion After the addition of AgN03, the coatings form a new silver phase, the surface pore size is increased, dense layer is more compact, the adhesion of sion resistance are improved the coatings, abrasion resistance and corro-
出处
《中国体视学与图像分析》
2014年第2期169-175,共7页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金(No.31070859
No.31370979)
黑龙江省自然科学基金重点项目(No.ZD201008)
黑龙江省高校创新团队建设计划项目(2012TD010)
关键词
超声微弧氧化
纯镁
AGNO3
涂层结构
性能
ultrasonic micro-arc oxidation
pure magnesium
AgNO3
coating structure
performance
