Cordierite material useful in a heat source retainer and process for
making the same
    3.
    发明授权
    Cordierite material useful in a heat source retainer and process for making the same 失效
    用于热源保持器的堇青石材料及其制造方法

    公开(公告)号:US4973566A

    公开(公告)日:1990-11-27

    申请号:US352737

    申请日:1989-05-16

    IPC分类号: C04B33/04 C04B35/195

    CPC分类号: C04B33/04 C04B35/195

    摘要: A porous cordierite ceramic and a process for making the same are provided by the present invention. Preferably, the ceramic material includes at least about 95 percent cordierite in the crystal phase, a porosity of at least about 30 volume percent, a crush load strength of at least about 6 pounds, and a thermal conductivity of less than about 5 watts/meter-.degree.K. The method of producing a porous cordierite ceramic includes (a) combining alumina, clay, talc, a pore-forming material and preferably free silica; (b) adding binder, water and other additives; and (c) shaping the mixture to form a green body. The green body is thereafter fired to form a sintered ceramic body. The porous cordierite is useful in a heat source retainer.

    摘要翻译: 多孔堇青石陶瓷及其制造方法由本发明提供。 优选地,陶瓷材料在结晶相中包括至少约95%的堇青石,至少约30体积%的孔隙率,至少约6磅的压碎载荷强度和小于约5瓦/米的热导率 - K.生产多孔堇青石陶瓷的方法包括(a)将氧化铝,粘土,滑石,成孔材料和优选游离二氧化硅组合; (b)加入粘合剂,水等添加剂; 和(c)使混合物成形以形成生坯。 然后烧成坯体以形成烧结陶瓷体。 多孔堇青石可用于热源保持器。

    Aluminum borate ceramics and process for producing same
    5.
    发明授权
    Aluminum borate ceramics and process for producing same 失效
    硼酸钡陶瓷及其生产方法

    公开(公告)号:US5183785A

    公开(公告)日:1993-02-02

    申请号:US545864

    申请日:1990-06-29

    申请人: Michael J. Readey

    发明人: Michael J. Readey

    IPC分类号: B01D39/20 C01B35/12 C04B35/01

    摘要: The present invention provides an aluminum borate ceramic having a high porosity and a tightly controlled pore size distribution, while maintaining good mechanical strength. The ceramic body can be formed by decomposing boric acid-stabilized aluminum acetate to form an aluminum borate powder, and sintering the powder to form a ceramic body.

    摘要翻译: 本发明提供具有高孔隙率和紧密控制的孔径分布的硼酸铝陶瓷,同时保持良好的机械强度。 陶瓷体可以通过分解硼酸稳定的乙酸铝形成硼酸铝粉末,并将粉末烧结以形成陶瓷体来形成。