Gradient porosity and large pore size NiTi shape memory alloys

被引：93

作者：

Zhang, Y. P. ^{[1
]}

Li, D. S. ^{[1
]}

Zhang, X. P. ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mech Engn, Guangzhou 510641, Peoples R China

来源：

SCRIPTA MATERIALIA | 2007年 / 57卷 / 11期

基金：

中国国家自然科学基金;

关键词：

NiTi shape memory alloy; gradient porosity; temporary space-holder; phase transformation; superelasticity;

D O I：

10.1016/j.scriptamat.2007.07.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous NiTi alloys with gradient porosity and large pore size were successfully fabricated by using a temporary space-holder (NH4HCO3) and a conventional sintering method. The pore characteristics of the porous alloys can be tailored effectively by changing the amount of NH4HCO3 added, and the use of NH4HCO3 has no influence on the microstructure and phase transformation behavior of the porous alloys. The fabricated samples with radial gradient porosity exhibit excellent superelasticity (higher than 4%). (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1020 / 1023

页数：4

共 14 条

[1]

CHANG YP, 2006, 7 AS PAC C MAT PROC

[2] Fabrication of porous NiTi shape memory alloy for hard tissue implants by combustion synthesis [J].

Chu, CL ;

Chung, CY ;

Lin, PH ;

Wang, SD .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 366 (01) :114-119

[3]

Gibson L.J., 1997, CELLULAR SOLIDS STRU, DOI DOI 10.1017/CBO9781139878326

[4] High strength, low stiffness, porous NiTi with superelastic properties [J].

Greiner, C ;

Oppenheimer, SM ;

Dunand, DC .

ACTA BIOMATERIALIA, 2005, 1 (06) :705-716

[5] Porous TiNi biomaterial by self-propagating high-temperature synthesis [J].

Kim, JS ;

Kang, JH ;

Kang, SB ;

Yoon, KS ;

Kwon, YS .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (06) :403-406

[6] Synthesis of porous Ni-Ti shape-memory alloys by self-propagating high-temperature synthesis: Reaction mechanism and anisotropy in pore structure [J].

Li, BY ;

Rong, LJ ;

Li, YY ;

Gjunter, VE .

ACTA MATERIALIA, 2000, 48 (15) :3895-3904

[7] Porous NiTi alloy prepared from elemental powder sintering [J].

Li, BY ;

Rong, LJ ;

Li, YY .

JOURNAL OF MATERIALS RESEARCH, 1998, 13 (10) :2847-2851

[8] Medical shape memory alloy applications - the market and its products [J].

Morgan, NB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2) :16-23

[9] The management of periprosthetic femoral fractures around hip replacements [J].

Tsiridis, E ;

Haddad, FS ;

Gie, GA .

INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED, 2003, 34 (02) :95-105

[10] The effect of porosity on phase transformation behavior of porous Ti-50.8 at.% Ni shape memory alloys prepared by capsule-free hot isostatic pressing [J].

Yuan, B. ;

Zhang, X. P. ;

Chung, C. Y. ;

Zhu, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :585-588

← 1 2 →