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    Improved ceramic composite structure comprising dross
    2.
    发明授权
    Improved ceramic composite structure comprising dross 失效
    改进的陶瓷复合结构，包括浮渣

    公开(公告)号：US4985382A

    公开(公告)日：1991-01-15

    申请号：US429818

    申请日：1989-10-31

    申请人： S. K. Nadkarni ,  Narasimha S. Raghavan

    发明人： S. K. Nadkarni ,  Narasimha S. Raghavan

    IPC分类号： C04B35/65

    CPC分类号： C04B35/652

    摘要： The invention relates to ceramic composite articles formed by infiltration of a particulate, permeable bed or permeable preform with a polycrystalline matrix a metal-oxidant reaction product. The bed or preform includes a dross material.

    摘要翻译： 本发明涉及通过用多晶基质将金属 - 氧化剂反应产物渗透到颗粒状，可渗透的床或可渗透的预型体而形成的陶瓷复合制品。 床或预制件包括浮渣材料。

    Use of a particulate packed bed at the inlet of a vertical tube MOCVD reactor to achieve desired gas flow characteristics
    3.
    发明授权
    Use of a particulate packed bed at the inlet of a vertical tube MOCVD reactor to achieve desired gas flow characteristics 失效
    在垂直管MOCVD反应器的入口处使用颗粒填充床以实现期望的气体流动特性

    公开(公告)号：US5054420A

    公开(公告)日：1991-10-08

    申请号：US586672

    申请日：1990-09-24

    申请人： Narasimha S. Raghavan ,  Roland S. Timsit

    发明人： Narasimha S. Raghavan ,  Roland S. Timsit

    IPC分类号： C23C16/44 ,  C23C16/455

    CPC分类号： C23C16/45504 ,  C23C16/455 ,  C23C16/45568

    摘要： A gas distributing device is provided for a Metal Organic Chemical Vapor Deposition (MOCVD) reactor. The gas distributing device comprises a packed bed of discrete particles located in the inlet of the reactor to provide a vortex-free flow of reactant gas mixture towards the susceptor within the reactor chamber. The packed bed of discrete particles is of sufficient depth to provide a series of tortuous interconnecting channels around and between the particles and through the bed. A porous support is provided for the packed bed in the inlet of the reactor chamber. The porous support device adjacent the reactor chamber permits a reactant gas mixture after having passed through the packed bed to enter the reactor chamber.

    摘要翻译： 为金属有机化学气相沉积（MOCVD）反应器提供气体分配装置。 气体分配装置包括位于反应器入口中的离散颗粒的填充床，以向反应器室内的基座提供反应气体混合物的无漩涡流动。 离散颗粒的填充床具有足够的深度，以在颗粒之间和通过床之间提供一系列曲折的互连通道。 为反应室入口处的填充床提供多孔载体。 邻近反应器室的多孔支撑装置允许反应气体混合物在通过填充床之后进入反应器室。

    Method for producing composite ceramic structures using dross
    4.
    发明授权
    Method for producing composite ceramic structures using dross 失效
    使用浮渣生产复合陶瓷结构的方法

    公开(公告)号：US5134102A

    公开(公告)日：1992-07-28

    申请号：US617723

    申请日：1990-11-26

    申请人： S. K. Nadkarni ,  Narasimha S. Raghavan

    发明人： S. K. Nadkarni ,  Narasimha S. Raghavan

    IPC分类号： C04B35/65

    CPC分类号： C04B35/652

    摘要： Production of composite ceramic articles by infiltration of a particulate, permeable bed or permeable preform with a polycrystalline matrix produced as a metal-oxidant reaction product, wherein the bed or preform is comprised of dross.

    摘要翻译： 通过用作为金属 - 氧化剂反应产物产生的多晶基质渗透颗粒状，可渗透的床或可渗透的预制件来生产复合陶瓷制品，其中床或预制件由浮渣组成。

    Methods of making fine particulate aluminum nitride
    5.
    发明授权
    Methods of making fine particulate aluminum nitride 失效
    制造微细氮化铝微粒的方法

    公开(公告)号：US4869892A

    公开(公告)日：1989-09-26

    申请号：US95916

    申请日：1987-09-11

    申请人： Raman R. Sood ,  Frederick W. Southam ,  Narasimha S. Raghavan

    发明人： Raman R. Sood ,  Frederick W. Southam ,  Narasimha S. Raghavan

    IPC分类号： C01B21/072

    CPC分类号： C01B21/072 ,  C01P2004/03

    摘要： A method of making fine particulate aluminum nitride, including the steps of reacting gaseous aluminum trichloride with aluminum-containing metallic material at elevated temperature to convert some of the trichloride to monochloride gas; introducing a gaseous nitrogen source to the monochloride-containing gas for reacting nitrogen with the monochloride to form fine particulate aluminum nitride; conducting a flow of gas comprising aluminum trichloride having the particulate nitride entrained therein to a cooling locality; there condensing the trichoride and accumulating the condensed trichloride and particulate nitride; and periodically reevaporating and removing the trichloride from the cooling locality for separating out and recovering the accumulated nitride.