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    • 124. 发明申请
    • METHOD AND DEVICE FOR MANUFACTURING DIAMOND
    • 用于制造钻石的方法和装置
    • WO1992001828A1
    • 1992-02-06
    • PCT/JP1991000955
    • 1991-07-17
    • SUMITOMO ELECTRIC INDUSTRIES, LTD.IKEGAYA, AkihikoFUJIMORI, Naoji
    • SUMITOMO ELECTRIC INDUSTRIES, LTD.
    • C30B29/04
    • C30B25/10C23C16/27C23C16/44C23C16/52C30B25/105C30B29/04
    • A method and a device for manufacturing diamonds which are compact and high in productivity and further suitable for the manufacture in an industrial scale by improving a heating filament CVD method and the device thereof in which a large area of bases can be set and by utilizing the capability of a thermionic emission material effectively. A method for manufacturing diamonds, such that diamonds are deposited on the surfaces of bases provided near thermionic emission material by decomposing, exciting and activating a raw material gas through the use of the thermionic emission material heated to a high temperature, the raw material gas including at least one or more carbon sources selected from among a hydrocarbon including hydrocarbon oxygen and/or nitrogen in its bonding radical, a carbon oxide, a carbon halide and solid carbon, hydrogen, and if necessary any of an inert gas of group VIII in periodic table H2O, O2 and F2, is characterized in that, the periphery of the thermionic emission material heated is surrounded by cooling plates, and the bases on which the diamonds are deposited are interposed between the cooling plates and the thermionic emission material with small gaps, and in that the temperature of the surface of the bases which faces the thermionic emission material is adjusted through the use of the cooling plates, and if necessary through the use of a buffer material inserted between the cooling plates and the bases, the diamonds are deposited on the surface of the base material.