孔隙率对多孔钛的成骨性能影响较大,高的孔隙率更有利于骨组织的长入.但随着孔隙率的升高,其力学性能必然会急剧下降.因此,如何在保证多孔钛高孔隙率的前提下提高其力学性能,成为当前势必解决的难题.本研究采用浆料发泡法,通过在钛粉中加入不同含量的氧化铈,制备出高孔隙率的多孔钛.结果表明,多孔钛孔隙呈三维网络状,孔隙率为71.6%～73.5%,孔径主要分布在100～700 μm,且孔壁上分布着微米级的微孔.当氧化铈的加入量为O.2%(质量分数,下同)时,多孔钛表现出最优的生物力学相容性,其杨氏模量为2.08 GPa,抗压强度为60.19 MPa.
参考文献
| [1] | Seah K H W et al.[J].Corrosion Science,1998,40(4-5):547. |
| [2] | Yoshimitsu O et al.[J].Biomaterials,2001,22(06):599. |
| [3] | Ik-Hyun O et al.[J].Scripta Materialia,2003,49(12):1197. |
| [4] | Misturu T et al.[J].Biomaterials,2005,26(30):6014. |
| [5] | Li H et al.[J].Key Engineering Materials,2005,288-289:611. |
| [6] | Fu HG;Xiao Q;Kuang JC;Jiang ZQ;Xing JD .Effect of rare earth and titanium additions on the microstructures and properties of low carbon Fe-B cast steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):160-165. |
| [7] | Guo F A et al.[J].Materials Science and Engineering B:Solid-state materials for advanced technology,2008,147(01):1. |
| [8] | Li, SJ;Zhang, YW;Sun, BB;Hao, YL;Yang, R .Thermal stability and mechanical properties of nanostructured Ti-24Nb-4Zr-7.9Sn alloy[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1-2):101-108. |
| [9] | Lu P X et al.[J].Journal of Rare Earths,2007,25(z1):176. |
| [10] | Zhenyu Zhang;Xinchun Lu;Dongming Guo .Microstructure and mechanical properties of CeO_2 doped diamond-like carbon films[J].Diamond and Related Materials,2008(3):396-404. |
| [11] | Zhang GJ;Sun YJ;Zuo C;Wei JF;Sun J .Microstructure and mechanical properties of multi-components rare earth oxide-doped molybdenum alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(0):350-352. |
| [12] | 秦俊法,陈祥友,李增禧.稀土的人体健康效应[J].广东微量元素科学,2002(06):1-17. |
| [13] | Li JP;Habibovic P;van-den-Doel M;Wilson CE;de-Wijn JR;van-Blitterswijk CA;de-Groot K .Bone ingrowth in porous titanium implants produced by 3D fiber deposition.[J].Biomaterials,2007(18):2810-2820. |
| [14] | Chang BS;Lee CK;Hong KS;Youn HJ;Ryu HS;Chung SS;Park KW .Osteoconduction at porous hydroxyapatite with various pore configurations.[J].Biomaterials,2000(12):1291-1298. |
| [15] | Gotz HE;Muller M;Emmel A;Holzwarth U;Erben RG;Stangl R .Effect of surface finish on the osseointegration of laser-treated titanium alloy implants.[J].Biomaterials,2004(18):4057-4064. |
| [16] | 李虎,虞奇峰,张波,王辉,范红松,张兴栋.浆料发泡法制备生物活性多孔钛及其性能[J].稀有金属材料与工程,2006(01):154-157. |
| [17] | 雏鹑鸣 et al.[J].稀有金属材料与工程,2007,36(08):1394. |
| [18] | Sandra C P;Rui N C .[J].Powder Technology,2007,178(02):111. |
| [19] | Gibson L J.Cellular Solids:Structure and Properties[M].Cambridge:Cambridge University Press,1997:152. |
| [20] | Gibson LJ .Biomechanics of cellular solids[J].Journal of Biomechanics,2005(3):377-399. |
| [21] | 高平,赵永庆,毛小南,于兰兰,王琛.钛合金铸锭偏析规律的研究进展[J].钛工业进展,2009(01):1-5. |
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