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    Sinterable ceramic powder, process for its production, silicon nitride ceramic produced therefrom, process for its production and its use
    1.
    发明授权
    Sinterable ceramic powder, process for its production, silicon nitride ceramic produced therefrom, process for its production and its use 失效

    公开(公告)号：US5162272A

    公开(公告)日：1992-11-10

    申请号：US498266

    申请日：1990-03-23

    申请人： Marcellus Peuckert ,  Tilo Vaahs ,  Martin Bruck ,  Hans-Jerg Kleiner ,  Ralf Riedel ,  Martin Sehr ,  Gunter Petzow

    发明人： Marcellus Peuckert ,  Tilo Vaahs ,  Martin Bruck ,  Hans-Jerg Kleiner ,  Ralf Riedel ,  Martin Sehr ,  Gunter Petzow

    IPC分类号： C01B21/068 ,  C04B35/589 ,  C04B35/626

    CPC分类号： C04B35/589

    摘要： The invention relates to a novel sinterable ceramic powder, to its preparation and to its further processing to give a silicon nitride ceramic, and to this material itself and its use. The sinterable ceramic powder is produced by melting a polysilazane or dissolving it in an organic solvent, suspending a powdered sinter aid in this melt or solution, then pyrolyzing the melt, or the residue obtained after evaporation of the solvent, at 500.degree. to 1600.degree. C. in a protective gas atmosphere, the polysilazane eitherA) being obtainable by reacting at least one of the oligosilazanes of the formula (I) ##STR1## in which a, b, c and d are the mole fractions of the respective structural units and where 0.ltoreq.a.ltoreq.1, 0.ltoreq.b.ltoreq.1, 0.ltoreq.c.ltoreq.0.7, 0.ltoreq.d.ltoreq.0.7, 0.3.ltoreq.a+b, c+d.ltoreq.0.7 and n is approximately 2 to approximately 12, with at least one of the chlorosilanes R.sup.6 R.sup.7 SiCl.sub.2, R.sup.8 SiCl.sub.3, Cl.sub.2 R.sup.9 Si--CH.sub.2 CH.sub.2 --SiR.sup.9 Cl.sub.2 and Cl.sub.3 Si--CH.sub.2 CH.sub.2 SiR.sup.10 Cl.sub.2 at 30.degree. to 300.degree. C., where, independently of one another, R.sup.1, R.sup.2, R.sup.4, R.sup.6, R.sup.7 and R.sup.8 are H, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl and R.sup.3, R.sup.5, R.sup.9 and R.sup.10 are C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl, orB) having the following formula ##STR2## in which R and R* can be identical or different and R and R* are C.sub.1 -C.sub.4 -alkyl, vinyl or phenyl and R' is C.sub.1 -C.sub.4 -alkyl and x and y are the mole fractions of the two structural units, where x+y=1 and x=0.7-0.95.A molded article can be formed from the ceramic powder thus obtained and a silicon nitride ceramic then produced by sintering. However, a molded article can also be formed from the solidified melt or the still unpyrolyzed residue obtained after evaporating the solvent and this article can then by pyrolyzed and sintered.Components subject to severe mechanical, thermal and corrosive stress can be produced from the ceramic obtained.

    Method for producing nitrides
    5.
    发明申请
    Method for producing nitrides 审中-公开
    氮化物的制造方法

    公开(公告)号：US20050220694A1

    公开(公告)日：2005-10-06

    申请号：US10512554

    申请日：2003-04-23

    申请人： Holger Winkler ,  Isabel Kinski ,  Ralf Riedel

    发明人： Holger Winkler ,  Isabel Kinski ,  Ralf Riedel

    IPC分类号： C01B21/06 ,  C01G15/00 ,  C23C16/30 ,  C30B25/02 ,  C30B29/40 ,  H01L21/205 ,  C01B21/00

    CPC分类号： C23C16/303 ,  C01B21/0602 ,  C01B21/0632 ,  C30B25/02 ,  C30B29/40 ,  H01L21/0254 ,  H01L21/02587 ,  H01L21/0262

    摘要： The present invention relates to a process for the preparation of nitrides of the formula Ga1-xInxN, where 0.01≦x≦1, in which one or more compounds of the general formula, M(NR2)3, where all R, independently of one another, are H, linear or branched —C1-8-alkyl or —SiRx2, where Rx is linear or branched —C1-8-alkyl, and M is Ga, In or Ga1-xInx, are reacted with ammonia, where the one or more compounds M(NR2)3 are selected in such a way that the ratio 1−x Ga to x In also applies in these compounds.

    摘要翻译： 本发明涉及一种制备式Ga 1-x N x N的氮化物的方法，其中0.01 <= x <= 1，其中一个或 更多的通式为M（NR 2）2 N 3的化合物，其中所有的R，彼此独立地是H，直链或支链的C 1〜 8个 - 烷基或-SiR x 2，其中R x是直链或支链-C 1-8 - / SUB - 烷基，M是Ga，In或Ga 1-x x In x x与氨反应，其中一种或多种化合物M（NR