采用凝胶注模工艺制备含8％和12％Co(质量分数,下同)的多孔Ti-Co合金,研究获得均匀悬浮稳定浆料的分散剂加入量.采用扫描电子显微镜、x射线衍射、压缩和三点弯曲试验分别对多孔Ti-Co合金的显微结构和力学性能进行了测试和分析.结果表明,加入1％分散剂可获得分散效果最佳的悬浮浆料,所制备多孔Ti-Co合金的孔隙率在50％左右,孔隙呈三维通孔结构.与多孔纯钛相比,添加Co元素明显提高了多孔Ti的力学性能,其中压缩强度在68～378 MPa之间,抗弯曲强度在53.68～169.17 MPa之间,弹性模量在7～21 GPa之间.固相体积分数为33％,在1100℃下烧结的多孔Ti-8％Co合金由于与成人骨的力学相容性最好,适合作为医用植入材料.
参考文献
| [1] | Uchida M;Oyane A;Kim H M et al.[J].Advanced Materials,2004,16(13):1071. |
| [2] | Endres S;Wilke M;Knoll P;Frank H;Kratz M;Wilke A .Correlation of in vitro and in vivo results of vacuum plasma sprayed titanium implants with different surface topography[J].Journal of Materials Science. Materials in Medicine,2008(3):1117-1125. |
| [3] | Chu C L;Chung C Y;Lin P H et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2004,366(01):114. |
| [4] | Traini T;Mangano C;Sammons R L et al.[J].Dental Materials,2008,24(11):1525. |
| [5] | Bandyopadhyay A;Krishna B V;Xue W et al.[J].Journal of Materials Science: Materials in Medicine,2008,19(10):1007. |
| [6] | Bandyopadhyay A;Espana F;Balla V K et al.[J].Acta Biomaterialia,2009,20(S):29. |
| [7] | Krishna B V;Bose S;Bandyopadhyay A .[J].Acta Biomaterialia,2007,3(06):997. |
| [8] | Harrysson OLA;CansiZoglu O;Marcellin-Little DJ;Cormier DR;West HA .Direct metal fabrication of titanium implants with tailored materials and mechanical properties using electron beam melting technology[J].Materials science & engineering, C. Biomimetic and supramolecular systems,2008(3):366-373. |
| [9] | Heinl P;Muller L;Korner C .Cellular Ti-6Al-4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting.[J].Acta biomaterialia,2008(5):1536-1544. |
| [10] | Lee W H;Hyun C Y .[J].Journal of Materials Processing Technology,2007,189(1-3):219. |
| [11] | 李艳,郭志猛,郝俊杰.医用多孔钛植入材料凝胶注模成形工艺研究[J].粉末冶金工业,2008(01):10-13. |
| [12] | LI Yan,GUO Zhimeng,HAO Junjie,REN Shubin.Porosity and mechanical properties of porous titanium fabricated by gelcasting[J].稀有金属（英文版）,2008(03):282-286. |
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%