Fabrication and characterisation of microporous titanium

Abstract

Microporous titanium was fabricated by a special powder metallurgy process and the microstructure and the mechanical properties of the material were characterised by scanning electron microscopy and quasi-static compression. The pore sizes and porosities of the samples are ranged of 10–50 μm and 40–65%, respectively. Macroporous Ti samples with the pore sizes ranged from 500 to 800 μm were also prepared by the similar process for comparison. The microporous Ti exhibits not only a very different deformation behaviour from the macroporous Ti but also lower flow stress than the latter, completely different from those observed in common porous metals.

Keywords:

• Porous metals
• Microporous titanium
• Powder metallurgy

Acknowledgement

This work is supported by the National Basic Research Programme of China in the no. 2006CB601201, the National Natural Science Foundation of China in the no. 50871107 and Science and Technology Programme of Anhui Province, China in the no. 07010302211.