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1. 发明专利

JPH08325083A CERAMIC MATERIAL EXCELLENT IN LIQUID SODIUM CORROSION AND ITS PRODUCTION 失效
公开(公告)号：JPH08325083A
公开(公告)日：1996-12-10
申请号：JP15114095
申请日：1995-05-26
申请人： NIPPON STEEL CORP , DORYOKURO KAKUNENRYO
发明人： HAYASHI KAZUNORI , NOSE TETSUO , NAKAYAMA HIDEMI , KANO SHIGEKI , TATE YOSHIAKI , SAITO JUNICHI
IPC分类号： C04B41/88 , C04B41/51 , C23C14/18
摘要： PURPOSE: To improve the liq. sodium corrosion resistance by forming a metallic thin film resistant to liq. sodium corrosion on the surface of a silicon-base non-oxide ceramic by ion-beam irradiation and metal vapor deposition. CONSTITUTION: A vacuum chamber 1 is provided with a holder 2 carrying a metal excellent in resistance to sodium corrosion, an ion source 3 and a sample holder 4 on which a silicon-base non-oxide ceramic 5 is placed, and the inside of the chamber 1 is evacuated to 10 to 10-6 Torr. An ion other than an inert gas ion is then emitted from the ion source 3 until the thickness of a metallic thin film from the ceramic 5 surface becomes greater than the maximum range of the inert gas ion used to form the thin film. When the thickness of the thin film becomes greater than the maximum range of the inert gas ion, the ion source 3 is changed to the inert gas ion to form the metallic thin film having 100nm to 10μm thickness and excellent in resitance to sodium corrosion on the ceramic 5 surface.

2. 发明专利

JPH08290962A ALUMINA SINTERED MATERIAL EXCELLENT IN RESISTANCE TO CORROSION BY LIQUID SODIUM 失效
公开(公告)号：JPH08290962A
公开(公告)日：1996-11-05
申请号：JP11666195
申请日：1995-04-19
申请人： NIPPON STEEL CORP , DORYOKURO KAKUNENRYO
发明人： NOSE TETSUO , NAKAYAMA HIDEMI , HAYASHI KAZUNORI , KANO SHIGEKI , YOSHIDA HIDEKAZU , HIRAKAWA YASUSHI , TATE YOSHIAKI
IPC分类号： C04B35/101 , B01J19/02
摘要： PURPOSE: To obtain an alumina sintered material excellent in corrosion resistance in the environment of liquid sodium while keeping its high temperature characteristics by selecting a specific alumina sintered material. CONSTITUTION: This alumina sintered material consisting of =99.9wt.% purity α-alumina, and having =98% relative density is selected. That is, since the corrosion of an alumina sintered material in liquid sodium proceeds by the reaction of silica and oxygen existing in a grain boundary phase with the liquid sodium to form Na2 SiO3 , etc., the corrosion becomes notable in the case of having 0.1wt.% silicon concentration. Also, in the case of having >10μ mean crystal grain diameter, cracks are formed in the crystal grain boundaries due to the heat stress caused by an anisotropy in heat expansion coefficients to promote the corrosion in the grain boundaries. And in the case of having

3. 发明专利

JPH08290974A SIALON SINTERED COMPACT EXCELLENT IN CORROSION RESISTANCE TO LIQUID SODIUM 失效
公开(公告)号：JPH08290974A
公开(公告)日：1996-11-05
申请号：JP11665995
申请日：1995-04-19
申请人： NIPPON STEEL CORP , DORYOKURO KAKUNENRYO
发明人： NOSE TETSUO , NAKAYAMA HIDEMI , HAYASHI KAZUNORI , KANO SHIGEKI , YOSHIDA HIDEKAZU , HIRAKAWA YASUSHI , TATE YOSHIAKI
IPC分类号： G21C13/08 , B01J19/02 , C04B35/599 , G21D1/00
摘要： PURPOSE: To obtain sialon sintered compact excellent in heat resistance, high- temperature strength and abrasion resistance and improved in corrosion resistance to liquid sodium by constructing the sintered compact from β'-sialon crystalline grains and grain boundary phase having a specific volume fraction and keeping the density of the sintered compact to a specific relative density. CONSTITUTION: This sialon sintered compact is obtained by adding fine powder of sintering auxiliaries of rare earth oxide, aluminum oxide, aluminum nitride, silicon oxide and magnesium oxide in an amount of

4. 发明专利

JPH08290971A SILICON NITRIDE SINTERED COMPACT EXCELLENT IN RESISTANCE TO CORROSION OF LIQUID SODIUM 失效
公开(公告)号：JPH08290971A
公开(公告)日：1996-11-05
申请号：JP11666095
申请日：1995-04-19
申请人： NIPPON STEEL CORP , DORYOKURO KAKUNENRYO
发明人： NOSE TETSUO , NAKAYAMA HIDEMI , HAYASHI KAZUNORI , KANO SHIGEKI , YOSHIDA HIDEKAZU , HIRAKAWA YASUSHI , TATE YOSHIAKI
IPC分类号： G21D1/00 , C04B35/584
摘要： PURPOSE: To obtain a silicon nitride sintered compact excellent in heat resistance, high-temperature strength and abrasion resistance and improved in corrosion resistance to liquid sodium by constructing the sintered compact from silicon nitride grains and a crystalline grain boundary of a specific volume fraction and keeping the density of the sintered compact to a specific relative density. CONSTITUTION: Powder of rare earth oxide, aluminum oxide, aluminum nitride, silicon oxide, magnesium oxide, etc., which are sintering auxiliaries in an amount of =4hr in the temperature-lowering step in sintering to crystallize boundary phase or gradually cooled at a temperature-lowering rate of 100 deg.C/hr in the same temperature range.

5. 发明专利

JP2009106976A Mold for continuous casting of steel material 审中-公开
标题翻译：钢材连续铸造模具
公开(公告)号：JP2009106976A
公开(公告)日：2009-05-21
申请号：JP2007282024
申请日：2007-10-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HAYASHI KAZUNORI
IPC分类号： B22D11/059
摘要： PROBLEM TO BE SOLVED: To prevent damage in a meniscus portion of a mold for casting molten steel including zinc as impurities.
SOLUTION: The mold for continuous casting made of copper or a copper alloy has a rhenium alloy coating which is formed in a range at least up to 300 mm in a mold depth direction from an upper end of the mold of an inside surface of the mold, and comprises 50 mass% or more of rhenium and the remainder consisting of one or more of cobalt, nickel and iron. A metal layer consisting of Co, Ni or a Co-Ni alloy may be provided as a base layer of the rhenium alloy coating provided on the inside surface of the mold of the copper or the copper alloy.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止包含锌作为杂质的铸钢模具的弯液面部分的损坏。解决方案：由铜或铜合金制成的连续铸模具有铼合金涂层，该铼合金涂层从模具的内表面的上端沿模具深度方向形成至少至多300mm的范围的模具，并且包含50质量％以上的铼，其余由钴，镍和铁中的一种或多种组成。可以提供由Co，Ni或Co-Ni合金构成的金属层作为设置在铜或铜合金的模具的内表面上的铼合金涂层的基层。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JPH08251853A BEARING APPARATUS OF MOTOR 失效
公开(公告)号：JPH08251853A
公开(公告)日：1996-09-27
申请号：JP5213395
申请日：1995-03-13
申请人： MATSUSHITA ELECTRIC IND CO LTD , NIPPON STEEL CORP
发明人： YAMASHITA FUMITOSHI , MURANO KATSUHIRO , KUROZUMI SEIJI , HAYASHI KAZUNORI , FUKUDA MASAO , INAYOSHI MASATO
IPC分类号： F16C33/12 , C23C14/06 , F16C32/00 , F16C33/24 , H02K5/16 , H02K5/167
摘要： PURPOSE: To provide a bearing apparatus of motor which can prevent abrasion of a sliding surface with the stabilized sliding characteristic even during high speed rotation. CONSTITUTION: A rotating shaft 1a formed of a steel material obtained by ion implantation of metal elements selected from the IVa, Va, V1a groups of the periodic table and carbon is provided and the ion implanted surface of the rotating shaft la slides on the bearing member 2 via a lubricant compound 3.

7. 发明专利

JPH07278783A SURFACE HARDENING METHOD 失效
公开(公告)号：JPH07278783A
公开(公告)日：1995-10-24
申请号：JP9826394
申请日：1994-04-11
申请人： NIPPON STEEL CORP
发明人： ICHIKO OSAMI , HAYASHI KAZUNORI
IPC分类号： C23C8/02 , C23C8/22 , C23C14/48
摘要： PURPOSE:To widen the application range of a surface hardened steel by adding hard carbide-forming elements by ion implantation to a surface layer, then subjecting this steel to a carburization treatment. CONSTITUTION:The hard carbide is formed on the surface layer of the mild steel material, by which its wear resistance is improved. The hard carbide- forming elements are, thereupon, added by ion implantation to the surface layer. The hard carbide-forming elements refer to elements which exhibit high hardness by bonding with carbon and are Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W which are elements of groups IVa, Va, VIa of the Periodic Table. The carburization treatment is executed after the adding for two hours at 900 deg.C in a gas of a compsn. of, for example, about 20% CO, about 40% H2 and about 40% N2. As a result, the surface hardened steel which has the hard layer of a practically sufficient depth and in which the boundaries do not exist is produced.

8. 发明专利

JPH07197261A PRODUCTION OF ALLOY 失效
公开(公告)号：JPH07197261A
公开(公告)日：1995-08-01
申请号：JP35192593
申请日：1993-12-28
申请人： NIPPON STEEL CORP
发明人： HAYASHI KAZUNORI , ICHIKO OSAMI , AKISUE OSAMU
IPC分类号： C23C14/48 , C23C14/54
摘要： PURPOSE:To produce a dilute alloy of metallic elements greatly different in physical properties, such as melting point and vapor pressure. CONSTITUTION:The ion beams of additive elements are implanted, under control, in a metal as a base, by which respective contents of the additive elements are controlled. Further, it is preferable to use the ions produced by an ion beam generator producing ions by vacuum arc discharge.

9. 发明专利

JPH07197260A SURFACE MODIFIED STEEL AND ITS PRODUCTION 失效
公开(公告)号：JPH07197260A
公开(公告)日：1995-08-01
申请号：JP1212494
申请日：1994-01-06
申请人： NIPPON STEEL CORP
发明人： HAYASHI KAZUNORI , SASAKI JUN , HASHIGUCHI HIDEHIRO
IPC分类号： C23C14/48 , C23C14/06
摘要： PURPOSE:To produce a surface modified steel excellent in wear resistance. CONSTITUTION:Surface treatment is done by an ion implantation process or a vacuum film formation process by precisely controlling the process so that carbon is uniformly dispersed and precipitated mainly in the form of graphite in iron without incorporating carbon in the form of iron carbide into compounds. By this procedure, the maximum concentration of carbon in the surface layer of a steel material is regulated to 45-80 atomic %, and the carbon mainly existing in the form of graphite is dispersedly precipitated in the surface layer of the steel material. By this method, the wear resistance of the iron and steel material can remarkably be improved.

10. 发明专利

JPH07138755A SURFACE REFORMING METHOD FOR IRON AND STEEL MATERIAL 失效
公开(公告)号：JPH07138755A
公开(公告)日：1995-05-30
申请号：JP31115293
申请日：1993-11-16
申请人： NIPPON STEEL CORP
发明人： HAYASHI KAZUNORI , SASAKI JUN
IPC分类号： C23C8/22 , C23C8/36 , C23C14/02 , C23C14/48 , C23C26/00
摘要： PURPOSE:To enhance the durability of implanted layers in the method for improving the wear resistance of the surfaces of iron and steel products by a titanium ion implantation by implanting the titanium ions to the surfaces after previously increasing the carbon concn. of the surface layers by subjecting the surface layers to a carburization treatment prior to titanium ion implantation. CONSTITUTION:The carbon concn. of the surface layers are increased by subjecting the material to be treated to the carburization treatment. The surface layers having the excellent wear resistance is formed by implanting the titanium ions into such layers even if additional implantation of carbon ions is not executed. The amt. of the titanium ions to be implanted is preferably >=1X10 atoms/ cm and atoms/cm .

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