Abstract
A new process to fabricate porous titanium by calcium vapor in-situ reduction of titanium sespuioxide was presented in this paper. The mixture of Ti2O3 and CaCl2 powders was preformed and reduced by calcium vapor. The porous titanium structure was obtained after leaching reduction products with hydrochloric acid and deionized water. The pore structure, morphology, composition of reduction products were investigated by SEM-EDS and XRD. The influence of different contents of anhydrous calcium chloride on porosity was discussed. The results show metallic titanium products with two types of pore structures and vacuum sintering treatment strengthened effectively connection between titanium particles. The porosity of porous titanium samples was 62%–82% and more than 90% of pores are open-pores.
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