工艺制备对钙长石/莫来石复合材料力学性能的影响

摘要

Anorthite/mullite composites were prepared by solid phase reaction method using anorthite and as-prepared mullite. Effects of process conditions were explored. Results show that sintering at 1400℃ and soaking at 1000℃ for 1h are critical to the bending strength of the composites and that the bending strength of the composites sintered twice is higher than that of the once sintered. XRD and SEM indicate that the composites of anorthite and mullite closely bonded by glass have improved mechanical properties.%利用钙长石和自制莫来石晶须为主要原料,通过固相法制备莫来石/钙长石复合材料.研究了工艺制备方法对钙长石/莫来石复合材料性能的影响.实验结果表明:合适的保温点(1000℃,保温1h)在1400℃烧结对复合材料的力学性能有至关重要的影响,二次重烧结法比一次烧成所制备的复合材料力学性能有所提高.XRD和SEM分析表明:由于钙长石相和莫来石相通过玻璃相紧密结合,提高了材料的力学性能.