利用Al-Ti-TiO2体系放热反应,采用自蔓延高温合成工艺,原位合成了TiAl基体和Al2O3颗粒,成功制备出TiAl/Al2O3复合材料.结合差热分析,通过对不同温度下反应产物相组成分析,对Al-Ti-TiO2体系燃烧反应过程进行了初步研究.结果表明,铝热还原反应是一个分步过程,先期发生的Al-Ti、Ti-TiO2反应降低了Al-TiO2还原反应的起始温度.
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