TITANIUM-CONTAINING CALCIUM HEXALUMINATE MATERIAL AND PREPARATION METHOD THEREFOR

摘要

A titanium-containing calcium hexaluminate material and a preparation method therefor. The technical solution is: using as raw material 60-80 wt% aluminum oxide micro powder, 5-20wt% calcium-containing micro powder, 10-20wt% titanium oxide micro powder, and 1-10wt% manganous oxide micro powder, uniformly mixing the raw material in a planetary ball mill to obtain a mixture; then molding the mixture by means of mechanical pressing at 100-200 MPa to obtain a green body; and drying the green body at 110-200˚C for 12-36 hours, and carrying out heat preservation at 1500-1800˚C for 1-8 hours to obtain the titanium-containing calcium hexaluminate material. The particle size D50 of the aluminum oxide micro powder is 1-8 μm; the particle size D50 of the calcium-containing micro powder is 1-10 μm; the particle size D50 of the titanium oxide micro powder is 1-10 μm; the particle size D50 of the manganous oxide micro powder is 1-8 μm. The preparation method is low in cost and involves a simple process. The prepared product has good chemical stability, good thermal shock resistance, and strong titanium-aluminum alloy melt resistance.