通过XD(Exothermic Dispersion)法原位反应生成Al2O3与Al3Ti增强的铝基复合材料,对反应过程动力学机理进行了探讨.结果表明Al/TiO2经充分混合、挤压成坯后,在真空炉中以一定的升温速率加热至800 ℃左右时发生剧烈的化学反应.SEM、XRD及能谱分析可知:生成物Al2O3呈等轴颗粒状,Al3Ti呈棒状,并进一步说明了升温速率、铝含量、压坯的预紧实度等因素对反应结果的影响.
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