超细AlN粉体合成与陶瓷制备研究

发布时间：2018-04-04 07:56

本文选题：氮化铝　切入点：湿化学法　出处：《功能材料》2017年04期

【摘要】：采用湿化学法,将异丙醇铝盐与有机碳源蔗糖混合,在一定温度及pH值下制成干凝胶,然后在高温下将干凝胶中的铝盐与碳源进行化学分解,并通过碳热还原发生氮化反应,制得中位粒径约为1.0μm,含氧量低、无杂相的超细AlN粉体。最后,通过添加CaF_2-Y_2O_3二元烧结助剂,利用无压烧结技术成功制得相对密度超过99.0%,热导率180 W/(m·℃)的AlN陶瓷。
[Abstract]:By wet chemical method, the aluminum isopropoxide salt and organic sucrose mixed at a certain temperature and pH value from dried gel, and then in the high temperature dry aluminum salt in the gel and carbon source for chemical decomposition, and by carbothermal reduction and nitridation reaction occurred, prepared median particle diameter is about 1 m, low oxygen, ultrafine AlN powder without impurity phase. Finally, by adding CaF_2-Y_2O_3 two yuan of sintering additives, by using pressureless sintering to prepare relative density of more than 99%, the thermal conductivity of 180 W/ (M C) AlN ceramics.

【作者单位】：上海大学材料科学与工程学院电子信息材料系光电子材料与器件研究中心;
【基金】：国家自然科学基金资助项目(21301115,61475097) 上海市科研计划能力建设资助项目(14520500300)
【分类号】：TQ174.6

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