为了提高金属基羟基磷灰石(HA)涂层的结合强度,采用复合电沉积-电沉积两步法在含Ti粉的钙磷电解液中制备HA-Ti/HA复合涂层,对涂层的组分结构、表面形貌、热稳定性、结合强度和生物活性进行了研究.实验结果表明:两步法制备的底层为HA-Ti复合涂层,外层为纯HA涂层的HA-Ti/HA复合涂层既提高了涂层的结合强度,又保证了涂层的生物活性.当涂层中Ti粉的质量分数为51.2 wt%时,涂层与基体的结合强度达到21.2 MPa,约为纯HA涂层的3倍.模拟体液浸泡7天后,涂层表面即被一层球状碳磷灰石覆盖,具有良好的生物活性,与纯HA涂层相比,复合涂层具有更好的耐蚀性能.
参考文献
| [1] | 余耀庭;张兴栋.生物医用材料[M].天津:天津大学出版社,2000 |
| [2] | Gu YW;Loh NH;Kho KA;Tor SB;Cheang P .Spark plasma sintering of hydroxyapatite powders.[J].Biomaterials,2002(1):37-43. |
| [3] | Shirkhanzadeh M. .Direct formation of nanophase hydroxyapatite on cathodically polarized electrodes[J].Journal of Materials Science. Materials in Medicine,1998(2):67-72. |
| [4] | 刘榕芳,肖秀峰,林岚云,倪军,陈古镛.电沉积HA/TiO2复合涂层的结合强度和热稳定性研究[J].无机化学学报,2004(02):225-230. |
| [5] | Ding SJ;Ju CP;Lin JH .Immersion behavior of RF magnetron-assisted sputtered hydroxyapatite/titanium coatings in simulated body fluid.[J].Journal of biomedical materials research, Part B. Applied biomaterials,1999(4):551-563. |
| [6] | M. Inagaki;Y. Yokogawa;T. Kameyama .Apatite/titanium composite coating on titanium or titanium alloy by RF plasma-spraying process[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2001(2):222-226. |
| [7] | Zheng X;Huang M;Ding C .Bond strength of plasma-sprayed hydroxyapatite/Ti composite coatings.[J].Biomaterials,2000(8):841-849. |
| [8] | Lin FH;Hsu YS;Lin SH;Sun JS .The effect of Ca/P concentration and temperature of simulated body fluid on the growth of hydroxyapatite coating on alkali-treated 316L stainless steel.[J].Biomaterials,2002(19):4029-4038. |
| [9] | 刘榕芳,肖秀峰,许道璇.复合电沉积制备HA/Ag生物陶瓷涂层[J].硅酸盐学报,2003(06):615-619. |
| [10] | Therese GHA.;Subbanna GN.;Kamath PV. .Novel electrosynthetic route to calcium phosphate coatings[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,1998(2):405-408. |
| [11] | ZHANG J M;LIN C J;FENG Z D et al.Mechanistic studies of electrodepositon for bioceramic coating of calcium phosphates by an in situ pH-microsensor technique[J].Journal of The Electrochemical Society,1998,452:235-240. |
| [12] | Liao CJ;Lin FH;Chen KS;Sun JS .Thermal decomposition and reconstitution of hydroxyapatite in air atmosphere.[J].Biomaterials,1999(19):1807-1813. |
| [13] | Kokubo T.;Kim HM.;Nakamura T.;Miyaji F. .SPONTANEOUS FORMATION OF BONELIKE APATITE LAYER ON CHEMICALLY TREATED TITANIUM METALS[J].Journal of the American Ceramic Society,1996(4):1127-1129. |
| [14] | Li P;KANAGASNIE I;DE GROOT K et al.Bone like hydroxyapatite induction by a gel -derived titania on a titanium substrate[J].Journal of The American Chemical Society,1994,77(05):1307-1312. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%