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纳米VO_2粉体的水热法制备与热致相变研究

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摘要 用水热法以五氧化二钒(V_2O_5)和草酸(2C_2O_4·2H_2O)作为原料,采用高压下的水热法制备了二氧化钒(R)粉体并对其进行了分析,得出其相变情况。通过对制备样品的XRD结果分析,发现采用五氧化二钒和草酸进行反应所得到的二氧化钒,几乎没有过量还原的情况发生。通过对不同热处理温度所制备的样品的分析、研究表明,适当增加热处理温度能够增加样品中R相二氧化钒的纯度并导致显著的热滞相变效应,相变前后的电阻的差距逐渐增大。所制备的二氧化钒样品有很好的热滞回线。
出处 《企业技术开发(下旬刊)》 2016年第2期164-168,共5页 Technological Development of Enterprise
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