熔盐氮化法低温合成AlN粉体
发布时间：2018-11-18 10:09
【摘要】：以LiCl-KCl为熔盐介质,以金属铝粉和三聚氰胺为原料,采用熔盐氮化法低温合成了AlN粉体。研究了反应温度和熔盐/反应物比例对AlN粉体合成过程的影响,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对产物的物相和形貌进行表征。结果表明:1)当熔盐/反应物比例为4:1时,1000℃/3h反应后所得试样中AlN的纯度较高,所合成的AlN呈现不规则颗粒状,其粒径约为200-800nm;2)AlN的含量随反应温度的升高而增加;3)增加熔盐/反应物的比例有利于AlN的生成,其含量随熔盐/反应物比例的增加而增加。
[Abstract]:AlN powder was synthesized by nitridation of molten salt with LiCl-KCl as molten salt medium, aluminum powder and melamine as raw materials. The effects of reaction temperature and the ratio of molten salt to reactant on the synthesis process of AlN powder were studied. The phase and morphology of AlN powder were characterized by (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results showed that: 1) when the ratio of molten salt to reactant was 4:1, the purity of AlN in the sample was higher after reaction at 1000 鈩，
本文编号：2339747
[Abstract]:AlN powder was synthesized by nitridation of molten salt with LiCl-KCl as molten salt medium, aluminum powder and melamine as raw materials. The effects of reaction temperature and the ratio of molten salt to reactant on the synthesis process of AlN powder were studied. The phase and morphology of AlN powder were characterized by (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results showed that: 1) when the ratio of molten salt to reactant was 4:1, the purity of AlN in the sample was higher after reaction at 1000 鈩，
本文编号：2339747
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