Strengthened cordierite having minor amounts of calcia
    8.
    发明授权
    Strengthened cordierite having minor amounts of calcia 失效
    加强少量钙化堇青石

    公开(公告)号:US4745092A

    公开(公告)日:1988-05-17

    申请号:US42996

    申请日:1987-04-27

    IPC分类号: C04B35/195 C04B35/04

    CPC分类号: C04B35/195

    摘要: Synthetic raw materials are used to prepare a sintered refractory body consisting essentially of doped cordierite having from about 47.5 to about 56 weight percent SiO.sub.2, from about 31 to about 40 weight percent Al.sub.2 O.sub.3, from about 12 to about 19 weight percent MgO, from about 0.15 to about 1 weight percent CaO, from zero to 250 ppm Na.sub.2 O, and from zero to about 150 ppm K.sub.2 O, the body having a flexural strength of at least about 20,000 psi (about 140 MPa).

    摘要翻译: 合成原料用于制备基本上由掺杂的堇青石组成的烧结耐火材料体,其具有约47.5-约56重量%的SiO 2,约31-约40重量%的Al 2 O 3,约12-约19重量%的MgO,约0.15 至约1重量%的CaO,从零至250ppm的Na 2 O和从0至约150ppm的K 2 O,该体的弯曲强度为至少约20,000psi(约140MPa)。