Porous NiTi alloy by metal injection moulding/sintering of elemental powders: Effect of sintering temperature

被引：52

作者：

Ismail, Muhammad Hussain ^{[1
,2
]}

Goodall, Russell ^{[1
]}

Davies, Hywel A. ^{[1
]}

Todd, Iain ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Sci & Engn, IMPC, Sheffield S1 3JD, S Yorkshire, England

[2] Univ Teknol MARA, Fac Mech Engn, Shah Alam 40450, Selangor, Malaysia

来源：

MATERIALS LETTERS | 2012年 / 70卷

基金：

英国工程与自然科学研究理事会;

关键词：

Powder metallurgy; Porous materials; Shape memory alloys; Transient liquid phase (TLP); TITANIUM-NICKEL; FABRICATION; IMPLANTS;

D O I：

10.1016/j.matlet.2011.12.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

With the potential to display pseudoelasticity and the shape memory effect, porous NiTi is promising for biomedical implant applications. Here, open porous NiTi is fabricated by metal injection moulding (MIM) of elemental Ni and Ti powders, followed by thermal debinding and transient liquid phase (TLP) sintering. The material produced has porosity of 39-45% and average pore size 100-120 mu m. A sintering temperature above 1050 degrees C is needed to allow sufficient interdiffusion to have substantially NiTi (B2) phase and avoid phases such as NiTi2 and Ni3Ti with poor mechanical properties, and at 1250 degrees C sintering reduces the amount and size of porosity. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：142 / 145

页数：4

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