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Journal of Materials Engineering and Performance

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20-12-2017

Porous Titanium Parts Fabricated by Sintering of TiH₂ and Ti Powder Mixtures

Authors: Qin Peng, Bin Yang, Bernd Friedrich

Published in: Journal of Materials Engineering and Performance | Issue 1/2018

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Abstract

A new simple powder metallurgy process by sintering TiH₂ powders was used to manufacture porous Ti components. The effects of the processing parameters (pressure of cold isostatic pressing and sintering temperature) and the TiH₂/Ti ratio in the powder mixtures on the impurities, the linear shrinkage and the pore properties (including overall and open porosities) were comprehensively determined. The addition of TiH₂ as a reactant has been found beneficial for the synthesis of porous Ti components. The formation mechanisms of pores were demonstrated based on the dehydrogenation process of TiH₂ during sintering, resulting in highest reactivity due to the “in statu nascendi” generation of the metal. In addition, the hardness and corrosion resistance of all the sintered samples were evaluated, related to the overall and open porosities. As a result, an optimal composition of Ti-40 wt.% TiH₂ was defined, as its maximum open porosity was about 23%.

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Title: Porous Titanium Parts Fabricated by Sintering of TiH2 and Ti Powder Mixtures
Authors: Qin Peng
Bin Yang
Bernd Friedrich
Publication date: 20-12-2017
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 1/2018
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-017-3099-3

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