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    • 44. 发明授权
    • Method for aqueous processing of AlN and compositions therefrom
    • AlN水处理方法及其组合物
    • US5234676A
    • 1993-08-10
    • US869601
    • 1992-04-16
    • Kevin E. Howard
    • Kevin E. Howard
    • B01J13/00C01B21/072
    • B01J13/0034B01J13/0008C01B21/0728
    • An aqueous composition containing aluminum nitride powder which exhibits a reduced tendency for hydrolysis of the aluminum nitride contained therein. The aqueous composition comprises (a) a liquid medium containing water, (b) aluminum nitride powder, and (c) a combination of buffering agents which controls the pH of water from about 5.5 to about 7.5, wherein the combination of buffering agents is employed at a lower weight percent concentration than that of the aluminum nitride powder. In another embodiment of the invention, a method of processing aluminum nitride powder in water which exhibits a reduced tendency for hydrolysis of the aluminum nitride is disclosed, which method involves mixing the above-described aqueous composition.
    • 含有氮化铝粉末的水性组合物,其中含有其中所含的氮化铝的水解倾向降低。 含水组合物包含(a)含水的液体介质,(b)氮化铝粉末和(c)控制约5.5至约7.5的水的pH的缓冲剂的组合,其中采用缓冲剂的组合 以比氮化铝粉末更低的重量百分比浓度。 在本发明的另一个实施方案中,公开了一种在水中加工氮化铝粉末的方法,该方法显示氮化铝水解的倾向降低,该方法包括混合上述水性组合物。
    • 46. 发明申请
    • PROCESS FOR THE PROTECTION OF AlN POWDER AGAINST HYDROLYSIS
    • 保护AlN粉末防止水解的方法
    • WO99012850A1
    • 1999-03-18
    • PCT/SI1998/000018
    • 1998-08-26
    • C01B21/072C04B35/581C04B41/00
    • C04B35/581C01B21/0728
    • The invention relates to a process for protecting aluminium nitride AlN powder against decomposition, i.e. hydrolysis in moist atmosphere or in an aqueous medium. The process for the protection of AlN powder against hydrolysis is characterized in that in a solution of orthosilicic acid or other silicic acid or water-soluble salt thereof with a concentration of from 1 x 10 to 5 x 10 mole dm , AlN powder is dispersed up to a mass fraction of 1 to 50 %, its particles having an average size of from 0.1 mu m to 1 mm, and during dispersion this suspension is not heated above the temperature of 85 DEG C. In the case of dispersion by milling, an organic or inorganic oxidizing agent, typically H2O2, is added to this suspension in the quantity of from 0.01 to 0.1 ml per gramme of AlN powder.
    • 本发明涉及一种保护氮化铝AlN粉末免受分解的方法,即在潮湿环境或水性介质中水解。 用于保护AlN粉末以防止水解的方法的特征在于,在1×10 -3至5×10 -1浓度的原硅酸或其它硅酸或其水溶性盐的溶液中, 摩尔dm -3,AlN粉末分散至1〜50%的质量分数,其粒子的平均粒径为0.1〜1mm,在分散时,不将该悬浮液加热至85℃以上 在通过研磨分散的情况下,将每升AlN粉末以0.01至0.1ml的量将有机或无机氧化剂(通常为H 2 O 2)加入到该悬浮液中。