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    Multi-phase metallic systems of the .gamma.,.gamma.', NBC type with improved structural stability
    2.
    发明授权
    Multi-phase metallic systems of the .gamma.,.gamma.', NBC type with improved structural stability 失效
    具有改善结构稳定性的γ，γ'，NBC型多相金属体系

    公开(公告)号：US4318756A

    公开(公告)日：1982-03-09

    申请号：US93118

    申请日：1979-11-13

    申请人： Herve Bibring ,  Tasadduq Khan ,  Maurice Rabinovitch ,  Jean-Francois Stohr ,  Jean-Michel Hauser

    发明人： Herve Bibring ,  Tasadduq Khan ,  Maurice Rabinovitch ,  Jean-Francois Stohr ,  Jean-Michel Hauser

    IPC分类号： C22C19/05 ,  C22C49/08 ,  C30B21/02

    CPC分类号： C22C49/08 ,  C30B21/02 ,  Y10T428/12465

    摘要： A refractory composite material has a nickel-based matrix, containing chromium, hardened by elements such as W in solid solution and hardened by precipitation of a .gamma.'(Ni,Xi).sub.3 (Al,Yi) phase, Xi representing elements different from Ni and Yi elements different from Al which the matrix may contain and which are respectively substituted for Ni and Al atoms in the formation of the .gamma.' precipitate, and with aligned monocrystalline fibers of a transition metal monocarbide, preferably niobium monocarbide, imbedded in said matrix, as obtained by unidirectional solidification. The chromium proportion of the material is maintained at a value lower than that from which the chromium carbide of formula Cr.sub.23 C.sub.6 is formed in the matrix at the expense of the niobium carbide of the reinforcement fibers at the operating temperatures foreseen for the material.

    摘要翻译： 难熔复合材料具有含有铬的镍基基质，固溶W中的元素固化并通过γ'（Ni，Xi）3（Al，Yi）相沉淀而硬化，表示不同于Ni的元素 和不同于Al的元素，其中基体可以含有，并且分别代替形成γ'沉淀物中的Ni和Al原子，并且嵌入在所述基质中的过渡金属单碳化物，优选铌单碳化物的排列单晶纤维， 如通过单向凝固获得的。 材料的铬比例保持在低于在基体中形成式Cr23C6的碳化铬的值，该值是在材料预期的工作温度下以增强纤维的碳化铌为代价的。

    Casting mold for directional solidification of an alloy
    4.
    发明授权
    Casting mold for directional solidification of an alloy 失效
    铸造用于定向凝固合金的模具

    公开(公告)号：US3973750A

    公开(公告)日：1976-08-10

    申请号：US593669

    申请日：1975-07-07

    申请人： Maurice Rabinovitch ,  Herve Bibring

    发明人： Maurice Rabinovitch ,  Herve Bibring

    IPC分类号： B22C23/02 ,  B22D27/04 ,  C30B21/02 ,  B22C3/00

    CPC分类号： B22D27/045 ,  B22C23/02 ,  C30B21/02

    摘要： A mold for obtaining metallic parts with an orientated crystalline struct by the directed solidification of an alloy is disclosed. The mould comprises a body of refractory mold that is a good heat conductor and on the inner wall of said body is provided a chemically protective lining of dense refractory metal oxide, with a high degree of purity, deposited on said body by blowpipe projection as a thin non-porous layer. The thickness of the metal oxide lining is in the order of a tenth of a millimeter to five tenths of a millimeter, the oxide being choosen in the group constituted by aluminium oxide, zirconium oxide, magnesium oxide and thorium dioxide with a degree of purity at least equal to 99.5 %.

    摘要翻译： 公开了一种用于通过合金的定向固化获得具有取向晶体结构的金属部件的模具。 模具包括耐火模具体，其是良好的热导体，并​​且在所述主体的内壁上设置有致密难熔金属氧化物的化学防护衬里，其具有高纯度，通过吹管投影沉积在所述主体上，作为 薄无孔层。 金属氧化物衬里的厚度为十分之一毫米至十五分之一毫米的量级，氧化物选自氧化铝，氧化锆，氧化镁和二氧化钍中的纯度为 最低等于99.5％。