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中文摘要：
采用自蔓延高温合成反应，应用Zr和AL粉末制备了ZrAl3金属间化合物，并利用XRD、DTA和SEM等分析手段，研究了SHS合成ZrAl3相的反应行为。结果表明，自蔓延合成ZrAl3的反应起始于Al与Zr的固一固反应，然后扩展到液．固反应，最后完成于后烧阶段。ZrAl3颗粒呈现不规则的石块状，且其表面布满许多树枝状的凹纹。在Zr-Al体系中，当Zr／Alis≤1（原子比）时，ZrAl3是唯一形成的相，其形成与所设计初始粉末的成分无关，并详细讨论了ZrAl3相的形核形为。
英文摘要：
Using self-propagating high-temperature synthesis （SHS） reaction, ZrAl3 intermetallic compound was fabricated from Zr and Al elemental powders and its reaction behavior was investigated by XRD, DTA and SEM analysis. The result reveals that the synthesis process of ZrAl3 initiates from solid-solid reaction, then further extends to solid-liquid reaction, and finally was completed at afterbuming stage. The ZrAl3 grain takes on irregular block-like morphology and many sunken dendrites appear on its surface. In Zr-Al system, when the ratio of Zr/Al is ≤ 1, the formation of ZrAl3 is independent on the expected composition of starting mixtures. Finally, the nucleation behavior of ZrAl3 was discussed in detail.
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