采用"气窒"法实现燃烧波的"淬熄",获得了燃烧合成Zn铁氧体粉体不同阶段的燃烧产物.采用XRD、SEM和mossbauer谱研究燃烧产物的相组成和微观结构的变化.提出了燃烧合成Zn铁氧体的溶解-析出机制,即铁粉在氧气中燃烧,被氧化成Fe2O3.在高温下,Fe和Fe2O3部分熔化成液相.高熔点的ZnO颗粒悬浮于液相中并逐渐溶解,最后Zn铁氧体逐渐从液相中析出.此外,结合上述分析,给出了燃烧合成Zn-Fe2O4的反应机制模型.
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