CPC C04B 35/581 (2013.01) [C04B 22/02 (2013.01); C04B 35/65 (2013.01); C04B 2235/46 (2013.01)] | 17 Claims |
1. A method of preparing a ceramic composite, comprising:
mixing an aluminum slag and a carbon accelerator to obtain a mixture, wherein the aluminum slag comprises aluminum, oxygen, nitrogen, and magnesium, a weight ratio of the oxygen to the aluminum is 0.6 to 2, a weight ratio of the nitrogen to the aluminum is 0.1 to 1.2, and a weight ratio of the magnesium to the aluminum is 0.04 to 0.2; and
reacting the mixture at a temperature equal to or greater than 1600° C. in a nitrogen atmosphere to obtain the ceramic composite, wherein the ceramic composite comprises aluminum nitride accounting for at least 90 wt % of the ceramic composite.
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