Al-Zr-C system compounds were synthesized by using three types of carbons： ligneous carbon, carbon black and flake graphite. Mineral compositions of Al-Zr-C system compounds from ligneous carbon and carbon black were Zr2Al3C5 and Zr3Al3C5. Heating treatment of as-synthesized compounds from room temperature to 1300℃ with a constant temperature-programmed rate in O2/Ar led to formations of zirconia and alumina. Analyses of exhaust gases during the oxidation process of the compounds revealed remaining of a carbon component in carbides until 1100℃.

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