采用溶胶-凝胶工艺在经过微弧氧化预处理的钛基体表面制备二氧化钛(TiO2)-含氟羟基磷灰石(FHA)-羟基磷灰石(HA)梯度结构的生物陶瓷涂层.采用X射线衍射检测了涂层的相组成,采用扫描显微镜观察了梯度涂层的形貌,采用划痕法测定了涂基结合力,结果表明:所制备的涂层是均匀和致密的具有梯度结构的TiO2-FHA-HA涂层;与单一的HA涂层相比梯度的引入显著提高了涂基结合力.生物溶解性实验结果显示了溶解速度FHA小于HA,这就表明了可以通过梯度设计来提高涂层的植入寿命.
参考文献
| [1] | 熊信柏,李贺军,黄剑锋,孙国岭,黄敏.钛基金属表面生物活性改性研究进展[J].稀有金属快报,2004(03):4-9. |
| [2] | Tache A;Gan L;Deporter D;Pilliar RM .Effect of surface chemistry on the rate of osseointegration of sintered porous-surfaced Ti-6Al-4V implants.[J].The International journal of oral & maxillofacial implants,2004(1):19-29. |
| [3] | Xu W;Hu W Y;Li M H;Cui'e Wen.Sol-gel derived hydroxyapatite/titania biocoatings on titanium substrate[J].Materials Letters,2006(06):1575-1578. |
| [4] | Liu DM;Yang Q;Troczynski T;Tseng WJ .Structural evolution of sol-gel-derived hydroxyapatite.[J].Biomaterials,2002(7):1679-1687. |
| [5] | Overgaard S;Lind M;Glerup H;Grundvig S;Bunger C;Soballe K .Hydroxyapatite and fluorapatite coatings for fixation of weight loaded implants.[J].Clinical Orthopaedics and Related Research,1997(336):286-296. |
| [6] | 曲海波,程逵,沈鸽,翁文剑,韩高荣.氟磷灰石材料及其在生物医学方面的应用[J].硅酸盐通报,2000(05):52-56. |
| [7] | Kim HW;Kong YM;Bae CJ;Noh YJ;Kim HE .Sol-gel derived fluor-hydroxyapatite biocoatings on zirconia substrate.[J].Biomaterials,2004(15):2919-2926. |
| [8] | Kurzweg H;Heimann RB;Troczynski T;Wayman ML .Development of plasma-sprayed bioceramic coatings with bond coats based on titania and zirconia.[J].Biomaterials,1998(16):1507-1511. |
| [9] | Gross KA.;Kannangara GSK.;Ben-Nissan B.;Hanley L.;Chai CS. .Thin hydroxyapatite coatings via sol-gel synthesis[J].Journal of Materials Science. Materials in Medicine,1998(12):839-843. |
| [10] | Cheng K;Weng W;Qu H.Sol-gel preparation and in vitro test of fluoapatite/hydroxyapatite films[J].Journal of Biomedical Materials Research Part B:applied Biomaterials,2004(69B):33-37. |
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%