ZHANG Wangxi ¹, XU Shishuai ², FENG Yanxiang ³, LIANG Baoyan ⁴

（1.Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 451191, Henan,China ;2.Yanshan

University, Qinhuangdao 066004, Hebei,China;3. Materials and Chemical Engineering School, Zhongyuan University of Technology,

Zhengzhou 451191, Henan,China ;4. Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou

451191, Henan,China ）

Abstract: At temperature from 1000 to 1400 ℃, Ti₃AlC₂/Al₂O₃composites were prepared by SPS with Al₂O₃ and Ti₃AlC2 as raw materials.The results showed that the main phases of products were Al₂O₃, Ti₃AlC₂ and small amounts of TiC at 1100 ℃. When Al₂O₃content was 70-80 wt.%, the micro-structure had large number pores, density of less than 3.60 g/cm3. 60Al₂O₃that was prepared with 60 wt.% Al₂O₃ at 1100 ℃ had dense micro-structure, but there was still a small amount of pores. When 60Al₂O₃ was synthesized at 1200 ℃, the density increased to 4.43g/cm³, the pores disappeared, hardness up to 0.93 GPa and wear ratio up to 0.3. When the temperature was increased to 1300-1400 ℃, amount of TiC was formed, but small changed in density, hardness up to 11.50 GPa, wear ratio up to 0.6.

Key words: SPS; Ti₃AlC₂; Al₂O₃; Ceramic composites