采用 Ti,Al和C粉末为反应物原料,研究了添加金属间化合物TiAl对燃烧合成Ti3AlC2的影响.从动力学和热力学的角度探讨了TiAl对燃烧合成Ti3AlC2的影响机理.实验结果表明,仅以单质粉末Ti,Al和碳黑为原料,按Ti3AlC2化学计量比配料,燃烧产物的主要物相是TiC,只能得到少量Ti3AlC2相,但在保持原料配比不变的情况下,在反应物原料中添加金属间化合物TiAl(20%～35%)(质量百分数)后,燃烧合成产物中Ti3AlC2的含量显著增加,成为燃烧产物的主要物相,而TiC的含量则显著减少.燃烧产物中Ti3AlC2的含量随添加TiAl量的增加而显著增多.
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