A composite coating was fabricated on pure magnesium by hydrothermal treatment in order to reduce its degradation in body environment.The coating was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD).The XRD pattern showed that the main composition of the coating was a mixture of CaSiO3,MgSiO3 and Mg(OH)2.Electrochemical test showed that the corrosion current density (icorr) of the coated magnesium was decreased by about two orders of magnitude compared with that of the bare magnesium,and the EIS measurement also showed that the corrosion resistant performance of the coated magnesium was significantly enhanced.Meanwhile,weight loss test showed that the weight loss of the coated magnesium was lower than that of the bare magnesium.Hence,the present study indicated that the composite coating could greatly slow down the degradation of pure magnesium.
参考文献
| [1] | F. Geng;L. L. Tan;X. X. Jin;J. Y. Yang;K. Yang .The preparation, cytocompatibility, and in vitro biodegradation study of pure β-TCP on magnesium[J].Journal of Materials Science. Materials in Medicine,2009(5):1149-1157. |
| [2] | S. Ni;J. Chang;L. Chou .A Novel Bioactive Porous CaSiO_3 Scaffold For Bone Tissue Engineering[J].Journal of biomedical materials research, Part A,2006(1):196-205. |
| [3] | K. LIN;W. ZHAI;S. NI .Study of the mechanical property and in vitro biocompatibility of CaSiO_3 ceramics[J].Ceramics International,2005(2):323-326. |
| [4] | S. Y. Zhang;Q. Li;X. K. Yang;H. X. Zhang;S. Y. Wang;F. Liu .Preparation and characterization of inorganic and organic coatings on AZ91D magnesium alloy with electroless plating pretreatment[J].Materials and Corrosion,2011(9):841-847. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%