研究了莫来石基陶瓷的化学组成、显微结构和烧结温度等对其耐磨性能的影响规律。结果表明：ZrO2引入莫来石中可显著提高陶瓷的耐磨性能。摩擦过程中，t-ZrO2会发生应力诱导相变，消耗裂纹成核和扩展的能量，并可使陶瓷的组织结构致密、晶粒间强度提高，降低沿晶断裂现象，氧化锆和氧化铝协同增韧莫来石陶瓷具有更好的耐磨性能，Al2O3颗粒的引入增加了陶瓷的硬质相，并提高了陶瓷的力学性能，Al2O3颗粒的体积含量在15％～20％范围内，陶瓷的耐磨性能最好，烧结温度只有控制在最佳的范围内，才能使陶瓷的组织结构致密、晶粒发育完善，充分发挥陶瓷的耐磨性能
The effects of chemical composition, microstructure and sintering temperature on wear resistance of mullite-based ceramics were investigated in this paper. It is found that the introduction of ZrO2 into mullite can increase wear resistance. The stress inducement phase transition of t-ZrO2 may absorb the energy needed for the formation and propagation of micro-cracks during friction process. The introduction of Al2O3 particles into ZTM ceramics can increase the hard phase and mechanical properties of ceramics, then obviously improve the wear resistance. The optimum volume fraction of Al2O3 particles in ZTM/Al ceramics is in range of 15%～20%. The sintering temperature should be controlled in the optimum range so as to improve density, microstructure and wear resistance of ceramics.
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