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采用非醇盐溶胶－凝胶工艺可获得Ｆｅ与Ｓｉ摩尔比达４．５／１的均匀凝胶，发现可以通过控制ＳｉＯ２的含量和热处理条件来控制相结构和晶粒尺寸，热处理过程中α－Ｆｅ相是由Ｆｅ３Ｏ４相还原而来，材料中有大量氧参与反应是工艺中采用了沉淀胶溶步骤的结果，最终制备了纳米复合Ｆｅ－ＳｉＯ２粉体。
The non-alkoxide sol-gel process can be obtained by a uniform molar ratio of Fe to Si 4.5 / 1 gel found that by controlling the content of SiO2 and heat treatment conditions to control the phase structure and grain size, heat treatment process α -Fe phase is reduced by the Fe3O4 phase, a large number of oxygen in the material involved in the reaction process is the result of precipitation peptization step, the final preparation of nano-composite Fe-SiO2 powder.