Microstructure and superelasticity of porous NiTi alloy

被引：25

作者：

Li, BY ^{[1
]}

Rong, LJ ^{[1
]}

Li, YY ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Atom Imaging Solids Lab, Shenyang 110015, Peoples R China

来源：

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 1999年 / 42卷 / 01期

基金：

中国国家自然科学基金;

关键词：

powder sintering; porous alloy; NiTi shape memory alloy; superelasticity;

D O I：

10.1007/BF02917064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure, porosity, phase composition and superelasticity (SE) in porous NiTi alloys produced by elemental powder sintering are examined by SEM, image analysis and XRD. It is found that it is feasible to produce porous NiTi alloy by elemental powder sintering, and the porosity of sintered porous NiTi alloy is in the range of 36.0%-41.5%. The pores are interconnected and the microstructure is sponge-like. Meanwhile, porous NiTi alloy has good SE. XRD patterns show that there is no pure Ni in alloy sintered at 1 223 K-9 h. Compared with the biomedical criteria far choice of implanting materials, porous NiTi alloy is satisfying to a great degree.

引用

页码：94 / 99

页数：6

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