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31. 发明授权

US4980201A Method of forming tungsten carbide by chemical vapor deposition 失效
标题翻译：通过化学气相沉积法形成碳化钨的方法
公开(公告)号：US4980201A
公开(公告)日：1990-12-25
申请号：US319707
申请日：1989-03-07
申请人： Nobuyuki Tokunaga , Yasushi Kita
发明人： Nobuyuki Tokunaga , Yasushi Kita
IPC分类号： C01B32/949 , C23C16/32
CPC分类号： C23C16/32
摘要： The invention relates to a chemical vapor deposition (CVD) method for forming tungsten carbide, W.sub.3 C, by subjecting a gas mixture of tungsten hexafluoride, hydrogen and an aromatic hydrocarbon, e.g. benzene, to vapor phase reaction at an elevated temperature. The reaction temperature can be lowered to the extent of 250.degree. C. and the reaction can be carried out even at normal pressure, not necessarily under reduced pressure, by proportioning tungsten hexafluoride, hydrogen and the hydrocarbon such that in the gas mixture the atomic ratio of C to W falls in the range from 2 to 10 while the atomic ratio of H to C is not lower than 3. By this method a W.sub.3 C film excellent in glossiness can be deposited on various metal parts without adversely affecting the metal parts by the elevated temperature.
摘要翻译：本发明涉及一种化学气相沉积（CVD）方法，用于通过使六氟化钨，氢气和芳烃的气体混合物，例如，苯，在升高的温度下进行气相反应。反应温度可以降低到250℃的程度，并且即使在常压下，也不一定在减压下，通过配比六氟化钨，氢气和烃来进行反应，使得在气体混合物中原子比的C与W的比率在2〜10的范围内，而H与C的原子比不低于3.通过该方法，可以在各种金属部件上沉积出优异的光泽度的W3C膜，而不会对金属部件造成不良影响升温

32. 再颁专利

USRE30667E Poly-dicarbon monofluoride 失效
标题翻译：聚二碳化碳
公开(公告)号：USRE30667E
公开(公告)日：1981-07-07
申请号：US55358
申请日：1979-07-06
申请人： Nobuatsu Watanabe , Yasushi Kita
发明人： Nobuatsu Watanabe , Yasushi Kita
IPC分类号： C01B31/00
CPC分类号： C01B31/005
摘要： A novel chemical compound poly-dicarbon monofluoride represented by the formula (C.sub.2 F).sub.n and having a crystalline structure of packing form .[.featured by its layer structure as shown in FIG. 12 hereof.]. stacked with an interlayer spacing of about 9.0 A. Such new compound can be produced under relatively mild reaction conditions and obtained in a yield as large as 100% with respect to not only the carbon material employed but also the fluorine employed. The new compound is black under the formation conditions and of low crystallinity, but it can be easily converted to that of high crystallinity and white color by heat treatment in a fluorine atmosphere. The new compound has a wide variety of uses, for example, as lubricants, stain-resistant and water-repellent materials, cathode materials in high energy primary cells, etc.

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