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1. 发明公开

EP0124901A3 Process and apparatus for manufacturing fine powder 失效
标题翻译：制造精细粉末的工艺和装置
公开(公告)号：EP0124901A3
公开(公告)日：1988-01-07
申请号：EP84105147
申请日：1984-05-07
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Kamijo, Eiji c/o Itami Works , Higuchi, Matsuo c/o Itami Works
IPC分类号： B01J19/12 , C01B21/06 , C01B31/30
CPC分类号： B82Y30/00 , B01J12/002 , B01J19/121 , B22F9/30 , B22F2998/00 , C01B21/06 , C01B21/064 , C01B21/068 , C01B21/0682 , C01B21/072 , C01B21/0722 , C01B21/0724 , C01B21/0763 , C01B21/0765 , C01B21/0828 , C01B32/90 , C01B32/956 , C01B33/03 , C01P2004/62 , C01P2004/64 , C22B9/223 , B22F2202/11
摘要： A process and an apparatus for manufacturing a fine powder of metals or ceramics are proposed in which a mixed gas of volatile metal compound and/orevaporated metal and a reaction gas is reacted in a discharged state while heating by laser beam.

2. 发明公开

EP0107349A3 Manufacturing method for fiber reinforced silicon ceramics sintered body 失效
标题翻译：纤维增强硅陶瓷烧结体的制造方法
公开(公告)号：EP0107349A3
公开(公告)日：1985-12-27
申请号：EP83305641
申请日：1983-09-22
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Kamijo, Eiji c/o Itami Works , Komura, Osamu c/o Itami Works , Higuchi, Matsuo c/o Itami Works
IPC分类号： C04B35/80 , C04B35/58 , C04B35/56
CPC分类号： C04B35/584 , C04B35/565 , C04B35/806 , F02B3/06
摘要： @ This invention relates to silicon ceramics sintered body, such as heat resistant ceramics sintered body, especially silicon carbide and silicon nitride. Silicon carbide and silicon nitride among heat resistant ceramics are superior especially in heat resistance, impact resistance, and corrosion resistance, and effective in use as structural material or part material for a turbine or a diesel engine used in a high temperature gas, thereby having recently largely been interested in its development. The silicon carbide and silicon nitride both are compounds of covalent bonding property and recognized as materials difficult to sinter. Hence, they are not sole, but added with sintering additives to form compounds of low melting point to be sintered. The sintered body using the sintering additives, however, is defective in that strength at a high temperature is deteriorated. This invention has been solved the above problem by allowing the sintered body to contain fiber whiskers. In other words, silicon ceramics powder, whisker formation agents to be whisker under heat treatment, sintering additives, and at need whisker formation accelerators, are mixed to be molded into the predetermined shape, and thereafter subjected to whisker formation heat treatment in the non-oxidizing atmosphere to produce whiskers within the molded material, which is densifying-sintered further in the non-oxidizing atmosphere, or the mixed materials are subjected to whisker formation heat treatment in the non-oxidizing atmosphere to thereby produce whiskers. Thereafter, the materials are molded into the predetermined shape and densifying-sintered in the non-oxidizing atmosphere, thereby obtaining the fiber reinforced silicon ceramics sintered body superior in heat resistance, impact resistance, and corrosion resistance.

3. 发明授权

EP0079678B1 Method for sintering silicon nitride 失效
标题翻译：烧结氮化硅的方法
公开(公告)号：EP0079678B1
公开(公告)日：1985-09-04
申请号：EP82305421.8
申请日：1982-10-12
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Higuchi, Matsuo c/o Itami Works , Honda, Masaaki c/o Itami Works , Tsukada, Hiroshi c/o Itami Works , Nishimoto, Tatsuya c/o Itami Works , Kamijo, Eiji c/o Itami Works
IPC分类号： C04B35/58
CPC分类号： C04B35/5935

4. 发明公开

EP0079678A1 Method for sintering silicon nitride 失效
标题翻译： Verfahren zum Sintern von Siliciumnitrid。
公开(公告)号：EP0079678A1
公开(公告)日：1983-05-25
申请号：EP82305421.8
申请日：1982-10-12
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Higuchi, Matsuo c/o Itami Works , Honda, Masaaki c/o Itami Works , Tsukada, Hiroshi c/o Itami Works , Nishimoto, Tatsuya c/o Itami Works , Kamijo, Eiji c/o Itami Works
IPC分类号： C04B35/58
CPC分类号： C04B35/5935
摘要： The invention relates to the method of sintering silicon nitride for obtaining a silicon nitride sintered compact having advanced high temperature strength and high density, the method wherein silicon nitride powder mixed with at least one kind selected from among the metallic oxides except silicon oxide and/or at least one kind selected from among the nitrides and carbides of the IVa, Va, Via metals is pressed and sintered being characterized in that the heating process is effected in atmospheres of different conditions varying by stages from the elevation of temperature to the completion of sintering, i.e. a vacuum below 10- 3 atm for the first stage, a partial pressure atmopshere of 10 -3 . 0.9 atm for the second stage, and a high pressure atmosphere above 1 atm for the third stage.
The invention enables to impart the aforedescribed characteristics to a silicon nitride sintered compact, although it has been considered difficult to sinter due to its covalent bending, e.g. Si 3 N 4 powder alone, and to produce a sintered compact of advanced high temperature strength and high density even when sintered in a vacuum, under normal pressure or under pressure at a high temperature by using a sintering additives such as metallic oxides, nitrides, carbides, etc.
摘要翻译：本发明涉及烧结氮化硅以获得具有先进的高温强度和高密度的氮化硅烧结体的方法，其中氮化硅粉末与除了氧化硅和/或氧化物之外的金属氧化物中的至少一种混合，从IVa，Va，VIa金属的氮化物和碳化物中选出的至少一种被压制和烧结，其特征在于，加热过程在不同条件的气氛中进行，该温度从升高到烧结完成阶段变化即第一阶段为10 -3 atm以下的真空，第二阶段的分压为10 -3〜0.9 atm，第三阶段为1 atm以上的高压气氛。本发明能够将上述特性赋予氮化硅烧结体，尽管由于共价弯曲而被认为难以烧结， Si3N4粉末，并且即使在真空中，在常压或高压下，通过使用诸如金属氧化物，氮化物，碳化物等的烧结添加剂在高温下烧结，也可以生产出具有先进的高温强度和高密度的烧结体。

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