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    METHOD OF PREPARING PRESSURELESS SINTERED, HIGHLY DENSE BORON CARBIDE MATERIALS
    4.
    发明申请
    METHOD OF PREPARING PRESSURELESS SINTERED, HIGHLY DENSE BORON CARBIDE MATERIALS 审中-公开
    制备无压烧结高密度硼化碳材料的方法

    公开(公告)号：WO2009020635A2

    公开(公告)日：2009-02-12

    申请号：PCT/US2008009484

    申请日：2008-08-07

    Applicant: SAINT GOBAIN CERAMICS ,  PUJARI VIMAL K ,  HENNESSEY JAMES T ,  COLLINS WILLIAM T

    Inventor： PUJARI VIMAL K ,  HENNESSEY JAMES T ,  COLLINS WILLIAM T

    IPC: C04B35/563

    CPC classification number: C04B35/563 ,  C04B35/62605 ,  C04B35/6261 ,  C04B35/6264 ,  C04B35/62655 ,  C04B2235/3826 ,  C04B2235/422 ,  C04B2235/48 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/723 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/96

    Abstract: In a method of preparing a boron carbide material, boron carbide powder is washed with essentially pure water at an elevated temperature to generate washed boron carbide powder. The washed boron carbide powder is combined with a sintering aid. The mixture of the boron carbide powder and the sintering aid is pressed to form a shaped material, and the shaped material is sintered. A sintered boron carbide material comprises a boron carbide component that includes boron carbide, elemental carbon, and not more than about 0.6 wt% of oxygen on the basis of the total weight of the boron carbide component. The sintered boron carbide material has a density of at least about 99% of the theoretical density. Another sintered boron carbide material comprises a boron carbide component that includes boron carbide, silicon carbide, elemental carbon, and not more than about 0.3 wt% oxygen on the basis of the total weight of the boron carbide component, and has a density of at least about 97% of the theoretical density.

    Abstract translation: 在制备碳化硼材料的方法中，在升高的温度下用基本纯净的水洗涤碳化硼粉末以产生洗过的碳化硼粉末。 洗过的碳化硼粉末与烧结助剂结合。 压制碳化硼粉末和烧结助剂的混合物以形成成形材料，并将成形材料烧结。 烧结碳化硼材料包含碳化硼组分，所述碳化硼组分包含碳化硼，元素碳和基于碳化硼组分的总重量计不超过约0.6重量％的氧。 烧结的碳化硼材料具有至少约理论密度的99％的密度。 另一种烧结碳化硼材料包含碳化硼组分，该碳化硼组分包含碳化硼，碳化硅，元素碳和基于碳化硼组分的总重量计不超过约0.3重量％的氧，并且具有至少 约为理论密度的97％。

    Silicon carbide ceramic composition and method of making
    7.
    发明专利
    Silicon carbide ceramic composition and method of making 未知

    公开(公告)号：AU2002355960A1

    公开(公告)日：2003-03-03

    申请号：AU2002355960

    申请日：2002-08-14

    Applicant: SAINT GOBAIN CERAMICS

    Inventor： PUJARI VIMAL K ,  COLLINS WILLIAM T

    IPC: C04B35/565 ,  C04B35/00

    Abstract: The present application is directed to ceramic compositions and, more specifically, to a silicon carbide composition and method of making it through liquid phase sintering. In one embodiment, the present invention is directed to an unsintered ceramic body including at least one liquid phase sintering aid. The unsintered ceramic body further includes a boron containing compound, a free carbon containing compound, and silicon carbide. In another embodiment, the present invention is directed to a method of making a sintered ceramic body. The method includes combining at least one liquid phase sintering aid, a boron containing compound, a free carbon containing compound, and silicon carbide to form a green ceramic, shaping the green ceramic into a ceramic body, and sintering the ceramic body.

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