不同孔径分布多孔钛的力学性能(英文)

被引：13

作者：

王晓花

李金山

胡锐

寇宏超

周廉

机构：

[1] 西北工业大学凝固技术国家重点实验室

来源：

Transactions of Nonferrous Metals Society of China | 2013年 / 23卷 / 08期

关键词：

多孔钛; 孔径分布; 力学性能; 密度指数; 生物材料;

D O I：

暂无

中图分类号：

TB383.4 [];

学科分类号：

摘要：

从生物学角度出发设计并制备2种不同孔径分布的多孔钛,并研究其力学性能。采用造孔剂烧结方法制备孔隙率为36%～63%的多孔钛,通过室温压缩测试其力学性能。多孔钛的弹性模量和抗压强度分别在2.662～18GPa和94.05～468.57 MPa范围内,且都随着孔隙率的增加而降低。抗压强度和孔隙率的关系曲线呈现完全的线性特征,表明抗压强度主要受孔隙率的影响,几乎不受孔径的影响。Gibson-Ashby力学关系分析结果显示:常数项C值的差异说明孔径分布对多孔钛的屈服强度有一定的影响;密度指数n值均大于临界值3,表明这2种不同孔径的多孔钛的变形方式相同,为孔壁的屈曲作用。

引用

页码：2317 / 2322

页数：6

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