The invention relates to a method for preparing
porous titanium with
titanium sesquioxide and belongs to the technical field of
porous titanium preparation. According to the method,
titanium sesquioxide powder and
calcium chloride are mixed evenly to obtain Ti2O3 / CaCl2 mixed
powder; the Ti2O3 / CaCl2 mixed
powder is subjected to pressing formation to obtain a preformed body; the preformed body is put in a vacuum or
argon atmosphere to be sintered for 30-120 min under the condition of the temperature of 850-1000 DEG C, and a porous precursor is obtained; under the conditions that pressure intensity is 10<-1>-10 Pa and temperature is 900-1200 DEG C, and
calcium vapor is adopted for reducing the porous precursor for 4-12 h; dilute
hydrochloric acid solution is adopted for immersing reduction products for 30-240 min, and
solid-liquid separation is conducted to obtain a
solid A and pickle liquor; deionized water and absolute ethyl
alcohol are used for alternately washing the
solid A, and thenvacuum
drying is conducted to obtain sheet
porous titanium; and the sheet porous
titanium is put at the temperature of 1200-1400 DEG C,
vacuum sintering is conducted for 2-4 h, and the porous titanium is obtained. The porous titanium prepared by the method has two
pore diameter distributions which are large pores of the
pore diameter of 50-200 [mu]m and micropores of the
pore diameter of 4-15 [mu]m correspondingly.