Preparation of High-Porosity NiTi Alloys by Powder Sintering with NaCl Pre-Forming

Hong Bo Sun; Xing Ke Zhao; Lan Lan; Ji Hua Huang; Hua Zhang

doi:10.4028/www.scientific.net/AMR.152-153.1342

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 152-153Preparation of High-Porosity NiTi Alloys by Powder...

Preparation of High-Porosity NiTi Alloys by Powder Sintering with NaCl Pre-Forming

Abstract:

High-porosity NiTi shape memory alloy has pseudo-elasticity and shape memory effect for energy absorption and convenient on-line repair without replace. In this paper, high-porosity NiTi alloys with interconnected and well distributed pores were fabricated successfully by sintering, using NaCl as temporary space-holders. Optical microscope, SEM and XRD have been used to investigate the porosity and pore structures. The results show that porosity can be up to 88%.The size and porosity of the pores depend mainly on the addition of salts in the compacts, and are also related to temperature and forming pressure.

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Periodical:

Advanced Materials Research (Volumes 152-153)

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1342-1345

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.152-153.1342

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Online since:

October 2010

Authors:

Hong Bo Sun, Xing Ke Zhao, Lan Lan, Ji Hua Huang, Hua Zhang

Keywords:

High Porosity, NaCl Space-Holder, Powder Sintering, Shape Memory Alloy Actuator

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