氧化铝复合陶瓷烧结工艺研究与力学性能改善

研究了反应结合Al₂O₃－ZrO₂－SiC复合陶瓷的烧结工艺与力学性能改善途径，对快速烧结与Ar气氛常压烧结工艺及材料力学性能进行对比，并分析了微观结构．实验结果表明，快速烧结是抑制晶粒生长、获得均匀、细微、致密结构的有效途径，材料的力学性能也达到了较好水平，但其工艺难度大，而Ar气氛常压烧结工艺简便易行，也可获得相当水平的力学性能．经热等静压使材料充分致密化，消除缺陷，力学性能大幅度提高．

Sintering and Properties Improvement of Alumina Composites

Al2O3-Zro2-SiC composites were prepared by RBAO technology and then fast-fired or conventionally-sintered. The materials obtained by both processes proved to have dense, fine-grained andhomogeneous microstructure, which gave rise to good mechanical properties. Fully dense and fiawfree materials were obtained after HIPing, therefore their properties were significantly improved.