Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method

Shuilin Wu; Xiangmei Liu; Kelvin Yeung; G.S. Wu; Dong Zheng; Z.S. Xu; Chi Yuen Chung; Paul K. Chu

Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method

Shuilin Wu
, Xiangmei Liu
, Kelvin Yeung
, G.S. Wu
, Dong Zheng
, Z.S. Xu
, Chi Yuen Chung
, Paul K. Chu

Research output: Conference Papers › RGC 32 - Refereed conference paper (without host publication) › peer-review

Abstract

The effects of cold compaction pressure, TiH₂, and NH₄HCO₃ on the properties of porous NiTi fabricated by capsule-free hot isostatic pressing (CF-HIP) were investigated. The porosities vary from 20% to 28% depending on the pressure. Porous NiTi with 42% porosity and irregular pores can be prepared by addition of TiH₂ whereas 48% porosity and circular pores can be achieved by NH4HCO3 addition. All the porous NiTi fabricated by CF-HIP using these three methods exhibit super-elastic behavior that matches human bones.

Original language	English
Publication status	Published - Nov 2011
Event	International Conference on Shape Memory and Superelastic Technologies (SMST 2011) - Gold Coast Hotel, Hong Kong, China Duration: 6 Nov 2011 → 9 Nov 2011 https://asm.confex.com/asm/smst11/webprogram/start.html

Conference

Conference	International Conference on Shape Memory and Superelastic Technologies (SMST 2011)
Place	Hong Kong, China
Period	6/11/11 → 9/11/11
Internet address	https://asm.confex.com/asm/smst11/webprogram/start.html

Research Keywords

Porous NiTi
Superelastic
Hot isostatic pressing

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@conference{f11e749f4c0540198711a2afc3230513,

title = "Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method",

abstract = "The effects of cold compaction pressure, TiH2, and NH4HCO3 on the properties of porous NiTi fabricated by capsule-free hot isostatic pressing (CF-HIP) were investigated. The porosities vary from 20\% to 28\% depending on the pressure. Porous NiTi with 42\% porosity and irregular pores can be prepared by addition of TiH2 whereas 48\% porosity and circular pores can be achieved by NH4HCO3 addition. All the porous NiTi fabricated by CF-HIP using these three methods exhibit super-elastic behavior that matches human bones.",

keywords = "Porous NiTi, Superelastic, Hot isostatic pressing",

author = "Shuilin Wu and Xiangmei Liu and Kelvin Yeung and G.S. Wu and Dong Zheng and Z.S. Xu and Chung, \{Chi Yuen\} and Chu, \{Paul K.\}",

year = "2011",

month = nov,

language = "English",

note = "International Conference on Shape Memory and Superelastic Technologies (SMST 2011) ; Conference date: 06-11-2011 Through 09-11-2011",

url = "https://asm.confex.com/asm/smst11/webprogram/start.html",

}

Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method. / Wu, Shuilin; Liu, Xiangmei; Yeung, Kelvin et al.
2011. Paper presented at International Conference on Shape Memory and Superelastic Technologies (SMST 2011), Hong Kong, China.

Research output: Conference Papers › RGC 32 - Refereed conference paper (without host publication) › peer-review

TY - CONF

T1 - Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method

AU - Wu, Shuilin

AU - Liu, Xiangmei

AU - Yeung, Kelvin

AU - Wu, G.S.

AU - Zheng, Dong

AU - Xu, Z.S.

AU - Chung, Chi Yuen

AU - Chu, Paul K.

PY - 2011/11

Y1 - 2011/11

N2 - The effects of cold compaction pressure, TiH2, and NH4HCO3 on the properties of porous NiTi fabricated by capsule-free hot isostatic pressing (CF-HIP) were investigated. The porosities vary from 20% to 28% depending on the pressure. Porous NiTi with 42% porosity and irregular pores can be prepared by addition of TiH2 whereas 48% porosity and circular pores can be achieved by NH4HCO3 addition. All the porous NiTi fabricated by CF-HIP using these three methods exhibit super-elastic behavior that matches human bones.

AB - The effects of cold compaction pressure, TiH2, and NH4HCO3 on the properties of porous NiTi fabricated by capsule-free hot isostatic pressing (CF-HIP) were investigated. The porosities vary from 20% to 28% depending on the pressure. Porous NiTi with 42% porosity and irregular pores can be prepared by addition of TiH2 whereas 48% porosity and circular pores can be achieved by NH4HCO3 addition. All the porous NiTi fabricated by CF-HIP using these three methods exhibit super-elastic behavior that matches human bones.

KW - Porous NiTi

KW - Superelastic

KW - Hot isostatic pressing

M3 - RGC 32 - Refereed conference paper (without host publication)

T2 - International Conference on Shape Memory and Superelastic Technologies (SMST 2011)

Y2 - 6 November 2011 through 9 November 2011

ER -

Superelastic Porous NiTi with Adjustable Porosities Synthesized by Powder Metallurgical Method

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