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    HARD ALLOY CONTANING MOLYBDENUM AND TUNGSTEN
    1.
    发明授权
    HARD ALLOY CONTANING MOLYBDENUM AND TUNGSTEN 失效

    公开(公告)号：KR830001125B1

    公开(公告)日：1983-06-14

    申请号：KR790000145

    申请日：1979-01-18

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： MIYAKE MASAYA ,  NAKANO MINOL ,  YAMAMO YAKAHARU ,  HARA AKIO

    IPC: B22F3/00

    Abstract: In the alloy having main composition of hard phase that compound is MC(M metal, c carbon) type of HCP and composed of composite carbide of molybdenum with the first kind or more than and tungsten, or carburized nitride, and containing a combined phase composed of the first kind of Fe, Co, Ni, Cr or more than, crystal structure having M2C type of HCP in the alloy must be distributed uniformly to a ratio of less than 30 volume%. This time, compound of MeC type is spherical shape, and the size is less than 10μ, and carbon content in the alloy is 0.8-0.98 atomic ratio with respect to theoretical carbon content of MC type compound.

    Aluminum nitride sintered body and process for producing the same
    5.
    发明专利
    Aluminum nitride sintered body and process for producing the same 未知

    公开(公告)号：SG47121A1

    公开(公告)日：1998-03-20

    申请号：SG1996009174

    申请日：1991-10-29

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： MIYAKE MASAYA ,  SHIMODA KOHEI ,  SOGABE KOUITI ,  YAMAKAWA AKIRA

    IPC: C04B35/581 ,  C04B35/58 ,  H01L23/15

    Abstract: A sinter which is based on aluminum nitride, contains a titanium compound, is black, and has a transmittance of 10% or less as regards the light with a wavelength of 500 to 650 nm and a thermal conductivity of 120 W/m.K or above. It is produced by molding a mixture of aluminum nitride powder with a titanium compound in an amount of 0.05 to 5 wt% in terms of titanium element, a sintering aid and optionally further a compound which generates carbon by thermal decomposition, heating the molded article in a vacuum, air, nitrogen, hydrogen or a mixture thereof to a residual carbon content of 2.0 wt% or less, and sintering in a nitrogen-containing nonoxidative atmosphere at 1,600 DEG C or above. Examples of the titanium compound to be used include TinO2n-1, a solid solution comprising TinO2n-1 and nitrogen partially dissolved therein, wherein n is 1 or above, and TiNxOy wherein 0

    THERMAL CONDUCTIVE COLORED ALUMINUM NITRIDE SINTERED BODY AND METHOD OF PREPARING THE SAME
    9.
    发明专利
    THERMAL CONDUCTIVE COLORED ALUMINUM NITRIDE SINTERED BODY AND METHOD OF PREPARING THE SAME 未知

    公开(公告)号：CA2048498A1

    公开(公告)日：1992-02-08

    申请号：CA2048498

    申请日：1991-08-06

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： SHIMODA KOUHEI ,  MAEDA TAKAO ,  SOGABE KOUICHI ,  MIYAKE MASAYA

    IPC: C04B35/581 ,  H01L23/08 ,  H01L23/15

    Abstract: Disclosed herein is an A l N sintered body which is colored, excellent in thermal conductivity and useful as an electronic material, and a method of preparing the same. The thermal conductive colored A l N sintered body contains 100 parts by weight of A l N, 0.005 to 0.5 parts by weight of carbon, not more than 1 part by weight of a boron compound in terms of the simple substance of boron, 0.01 to 15 parts by weight of a rare earth aluminum oxide in terms of the simple substance of the rare earth element, and 0.01 to 15 parts by weight of a compound containing an element belonging to the group IVB of the periodic table in terms of the simple substance of the element, and its thermal conductivity is 100 to 270 W/m.K at the ordinary temperature. This A l N sintered body is obtained by shaping a mixture into a prescribed configuration and thereafter firing the as-formed compact in a non-oxidizing atmosphere containing at least 10 percent by volume of nitrogen under a temperature of 1500 to 2100 DEG C.

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    10.
    发明专利
    "Molybdenum-containing hard alloy" 未知

    公开(公告)号：DE3121903A1

    公开(公告)日：1982-12-16

    申请号：DE3121903

    申请日：1981-06-02

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： KODAMA MITSUO ,  MIYAKE MASAYA ,  NAKANO MINOL ,  ASAI TSUYOSHI ,  HARA AKIO

    IPC: C22C1/05 ,  C22C29/02 ,  C22C29/00

    Abstract: The invention relates to a hard alloy containing a hard phase and a binding phase in which the hard phase consists of at least one compound having a crystal structure of the simple hexagonal MC type, where M is metal and C is carbon, which compound is selected from the group comprising mixed carbides, mixed carbonitrides and mixed carboxynitrides of molybdenum and tungsten, and the binding phase consists of at least one element selected from the group comprising iron, cobalt and nickel. The hard phase, which is produced by carburising an (Mo, W) alloy, which is prepared by reducing oxides of molybdenum and of tungsten with a particle size of at most 1 mu m, consists of coarse particles with a mean particle size of at least 3 mu m and, in the particles, has a uniform ratio of molybdenum to tungsten. The overall composition of the hard alloy is within the hatched portion (ABC-DEA) of Figure 1.

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