High thermal conductivity aluminum nitride ceramic body
    21.
    发明授权
    High thermal conductivity aluminum nitride ceramic body 失效
    高导热氮化铝陶瓷体

    公开(公告)号:US4533645A

    公开(公告)日:1985-08-06

    申请号:US629666

    申请日:1984-07-11

    IPC分类号: C04B35/581 C04B35/58

    CPC分类号: C04B35/581

    摘要: The process comprises forming a mixture comprised of aluminum nitride powder and free carbon wherein the aluminum nitride has a predetermined oxygen content higher than about 0.8% by weight and wherein the amount of free carbon reacts with such oxygen content to produce a deoxidized powder or compact having an oxygen content ranging from greater than about 0.35% by weight to about 1.1% by weight and which is at least 20% by weight lower than the predetermined oxygen content, heating the mixture or a compact thereof to react the carbon and oxygen producing the deoxidized aluminum nitride, and sintering a compact of the deoxidized aluminum nitride producing a ceramic body having a density greater than 85% of theoretical and a thermal conductivity greater than 0.5 W/cm.multidot.K. at 22.degree. C.

    摘要翻译: 该方法包括形成由氮化铝粉末和游离碳组成的混合物,其中氮化铝具有高于约0.8重量%的预定氧含量,并且其中游离碳的量与该氧含量反应以产生脱氧粉末或压块,其具有 氧含量范围为大于约0.35重量%至约1.1重量%,并且其比预定氧含量低至少20重量%,加热混合物或其成型体以使产生脱氧的碳和氧反应 氮化铝,并且烧结制造脱氧氮化铝的压块,产生密度大于理论值的85%,导热率大于0.5W / cm×K的陶瓷体。 在22℃

    Molding composition for arc circuit breakers
    22.
    发明授权
    Molding composition for arc circuit breakers 失效
    电弧断路器的成型组合物

    公开(公告)号:US4511773A

    公开(公告)日:1985-04-16

    申请号:US519935

    申请日:1983-08-03

    CPC分类号: F27D1/00 C04B28/342 C04B35/22

    摘要: A ceramic useful as an electrically insulating material is produced by calcinating wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece. The ceramic is employed within arc circuit breakers as a substitute for asbestos liners, dividers and arc splitters.

    摘要翻译: 用作电绝缘材料的陶瓷是通过煅烧硅灰石粉末,将煅烧的粉末与特定P2O5浓度范围的磷酸混合,对所得混合物进行压模,并烧制所得到的压制片而产生的。 陶瓷用于电弧断路器中,作为石棉衬垫,分隔器和电弧分配器的替代品。

    Method for minimizing the formation of a metal-ceramic layer during
casting of superalloy materials
    23.
    发明授权
    Method for minimizing the formation of a metal-ceramic layer during casting of superalloy materials 失效
    用于在铸造超合金材料期间最小化金属 - 陶瓷层的形成的方法

    公开(公告)号:US4240828A

    公开(公告)日:1980-12-23

    申请号:US80285

    申请日:1979-10-01

    申请人: Irvin C. Huseby

    发明人: Irvin C. Huseby

    IPC分类号: C22C19/00 C30B21/02

    CPC分类号: C22C19/00 C30B21/02

    摘要: A method for minimizing the formation of a reaction layer at the metal-ceramic interface comprises doping a superalloy material with the rare earth metal whose metal cation is in the ceramic material comprising the mold and/or core used in casting and directionally solidifying the superalloy material.

    摘要翻译: 用于最小化在金属 - 陶瓷界面处形成反应层的方法包括用金属阳离子在陶瓷材料中的稀土金属掺杂超级合金材料,所述稀土金属包括用于铸造的模具和/或芯体,并定向凝固超合金材料 。