烧结法制备Al_2TiO_5材料

Preparation of Al_2TiO_5 by solid-phase sintering

以α-Al2O3、钛白粉为主要原料,加入氧化镁、氧化硅、氧化锆稳定剂,采用固相烧结法,于1500℃/2h制备了Al2TiO5材料。进行了XRD分析、热膨胀系数测定、循环加热(冷却)5次的综合热分析测试以及激光粒度分析。研究表明,制备材料的主晶相为Al2TiO5,1300℃平均热膨胀系数为3.709×10-6/℃,在500～1300℃使用温度区间稳定。经过研磨制备了粒径≤10μm的Al2TiO5粉料。

α - Al2O3 and TiO2 as the main raw materials, by adding stabilizing agent of MgO, SiO2, PSZ, in 1 500 ℃/2 h ,using solid - phase sinteriag method to prepare Al2TiO5 materials. For XRD analysis, thermal expansion coefficient of determination, heating cycle （cooling） five times integrated thermal analysis testing and laser particle size analysis. Research shows that the preparation of materials for the main phase of Al.,TiOs, 1 300 ℃ average thermal expansion coefficient 3. 709 × 10^-6/℃. In 500 - 1 300 ℃temperature range and stability. After grinding prepared equivalent to 10μm particle size is less than the Al2TiO5 materials.