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爆轰法制备纳米MnFe2O4粉体的实验研究

DOI: 10.11858/gywlxb.2007.02.009, PP. 173-177

Keywords: 纳米,锰铁氧体,爆轰合成,氧平衡

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Abstract:

采用硝酸铁、硝酸锰作为主要氧化剂,油相作为可燃剂研制成两种不同氧平衡的乳化炸药,均成功地爆轰合成了纳米MnFe2O4粉体。用XRD表征粉末的物相结构,并比较了此两种不同氧平衡炸药所得产物成分的区别。根据DSC和XRD结果,分别在200℃(1h)、260℃(1h)、280℃(1h)、360℃(40min)和500℃(1h)下对产物进行热处理,在280℃时得到了纯净的纳米MnFe2O4颗粒,并用TEM对其形貌进行了观察。实验结果表明,负氧平衡炸药的爆轰产物成分比零氧平衡炸药的爆轰产物相对纯净,280℃是一个合适的热处理温度。爆轰法具有合成方便快捷、后期热处理简单的优点。

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