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11. 发明专利

JP2004149920A Stainless steel for separator of solid polymer fuel cell and its manufacturing method, and solid polymer fuel cell using that stainless steel 有权
公开(公告)号：JP2004149920A
公开(公告)日：2004-05-27
申请号：JP2003348772
申请日：2003-10-07
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： ISHIKAWA SHIN , FUKUDA KUNIO , KATO YASUSHI , FURUKIMI OSAMU , TAKAO KENJI
IPC分类号： C22C38/00 , C22C38/22 , C22C38/28 , H01M8/02 , H01M8/10
CPC分类号： C23G1/088
摘要： PROBLEM TO BE SOLVED: To provide a stainless steel for the separator of a solid polymer fuel cell having excellent corrosion resistance, and small contact resistance (that is, it excels in electrical conductivity), and the solid polymer fuel cell using it. SOLUTION: The stainless steel for the separator of the solid polymer fuel cell contains ≤0.03mass% C, ≤0.03 mass% N, 20-45mass% Cr and 0.1-5.0mass% Mo, and the sum total of C and N content satisfies ≤0.03mass%, and the balance Fe with inevitable impurities. Moreover, in the stainless steel, a Cr/Fe ratio by atomic ratio computed from Cr and Fe content contained in the passive state film of a surface is 1 or more. COPYRIGHT: (C)2004,JPO

12. 发明专利

JP2004018950A Cr-CONTAINING STEEL WITH EXCELLENT HIGH-TEMPERATURE OXIDATION RESISTANCE AND HIGH-TEMPERATURE SALT DAMAGE RESISTANCE 有权
公开(公告)号：JP2004018950A
公开(公告)日：2004-01-22
申请号：JP2002175997
申请日：2002-06-17
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYAZAKI ATSUSHI , TAKAO KENJI , FURUKIMI OSAMU
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To produce Cr-containing steel having excellent high-temperature oxidation resistance and high-temperature salt damage resistance and capable of withstanding use at high temperatures exceeding 900°C.
SOLUTION: Material components are adjusted to a composition range consisting, by mass, of ≤0.02% C, ≤2.0% Si, ≤2.0% Mn, 6.0 to 40.0% Cr, 1.0 to 5.0% Mo, >2.0 to ≤5.0% W, >0.1 to ≤7.0% Al, ≤0.02% N, one or more kinds of metals selected from 0.05 to 0.2% Ti, 0.05 to 0.2% Zr and 0.05 to 0.2% V and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2004,JPO

13. 发明专利

JP2004018921A Ferritic stainless steel soft at room temperature and excellent in high-temperature oxidation resistance 有权
公开(公告)号：JP2004018921A
公开(公告)日：2004-01-22
申请号：JP2002174298
申请日：2002-06-14
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYAZAKI ATSUSHI , TAKAO KENJI , FURUKIMI OSAMU
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To produce ferritic stainless steel in which high-temperature oxidation resistance is enhanced without deteriorating workability at room temperature.
SOLUTION: Material components are regulated to a composition range consisting of, by mass, ≤0.02% C, ≤0.1% Si, ≤2.0% Mn, 12.0 to 16.0% Cr. 1.0 to 5.0% Mo, 2.0% to 5.0% W, 5(C+N) to 1.0% Nb, ≤0.02% N and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2004,JPO

14. 发明专利

JP2004293853A Heat exchanger for high-temperature 审中-公开
标题翻译：高温热交换器
公开(公告)号：JP2004293853A
公开(公告)日：2004-10-21
申请号：JP2003084588
申请日：2003-03-26
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： YAMAGUCHI YASUHIRO , ISHIKAWA SHIN , TAKAO KENJI
IPC分类号： F28F21/08 , C22C38/00 , C22C38/18
CPC分类号： F28F21/083
摘要： PROBLEM TO BE SOLVED: To provide a heat exchanger for high temperature using ferrite stainless steel free from corrosion and thinning caused by high-temperature oxidization under high temperature and further in a water vapor atmosphere.
SOLUTION: In this heat exchanger wherein a fluid temperature at a high temperature side is 550°C or more, and further at least one of the heat exchanging fluids is a water vapor-containing gas, the heat exchanger for high-temperature is composed of ferrite stainless steel including Al of 1.0-8.0 mass%. During the operation, the firm alumina coating film is formed by Al included in the steel, whereby the high-temperature oxidization can be remarkably prevented.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种高温热交换器，使用铁氧体不锈钢，其在高温下进一步在水蒸汽气氛中不受高温氧化引起的腐蚀和变薄。解决方案：在高温侧的流体温度为550℃以上的热交换器中，还有至少一个热交换流体为含水蒸气的气体，高温用热交换器由含有1.0〜8.0质量％的Al的铁素体不锈钢构成。在操作过程中，氧化铝固体涂层由包含在钢中的Al形成，从而可以显着地防止高温氧化。版权所有（C）2005，JPO＆NCIPI

15. 发明专利

JP2004124197A Stainless steel for solid high polymer type fuel cell separator, its production method, and solid high polymer type fuel cell 有权
公开(公告)号：JP2004124197A
公开(公告)日：2004-04-22
申请号：JP2002291889
申请日：2002-10-04
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： ISHIKAWA SHIN , MIYAZAKI ATSUSHI , TAKAO KENJI , FURUKIMI OSAMU
IPC分类号： C22C38/00 , C22C38/34 , H01M8/02 , H01M8/10
CPC分类号： Y02P70/56
摘要： PROBLEM TO BE SOLVED: To provide a stainless steel for solid high polymer type fuel cell separator having good corrosion resistance and also, small contact resistance and its producing method, and the solid high polymer type fuel cell. SOLUTION: This stainless steel has the composition composed of ≤ 0.03 mass% C, ≤ 0.03 mass% N, ≤ 0.03 mass% C + N, 16 - 45 mass% Cr, 1.0-7.0 mass% Mo, 0.1-3.0 mass% Si and the balance Fe with inevitable impurities, and Fe content, Cr content and Si content contained as deposit in the stainless steel, are satisfied to [deposit Fe] + [deposit Cr] + 2[deposit Si] ≥ 1.0. COPYRIGHT: (C)2004,JPO

16. 发明专利

JP2004091923A Metallic material for fuel cell, and solid oxide type fuel cell 有权
公开(公告)号：JP2004091923A
公开(公告)日：2004-03-25
申请号：JP2003290846
申请日：2003-08-08
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： IDE SHINSUKE , ISHIKAWA SHIN , TAKAO KENJI , FURUKIMI OSAMU , FUKUDA KUNIO , MIYAZAKI ATSUSHI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/38 , H01M8/02 , H01M8/12
CPC分类号： Y02E60/525
摘要： PROBLEM TO BE SOLVED: To provide a metallic material for the interconnector of a solid oxide type fuel cell which has excellent oxidation resistance and satisfactory electrical conductivity even in an environment of use at a high temperature, also has a small difference between the thermal expansion and that of an electrolyte, and can inexpensively be produced, and to provide a fuel cell obtained by using the metallic material. SOLUTION: The metallic material comprising, by mass, ≤0.20% C, 0.02 to 1.0% Si, ≤2.0% Mn and 10 to 40% Cr, comprising 0.03 to 5.0% Mo and 0.1 to 3.0% Nb also so as to satisfy the inequality of 0.1≤Mo/Nb≤30, and further comprising one or more kinds of metals selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr and Hf by ≤1.0% in total is used as the interconnector of a solid oxide type fuel cell. COPYRIGHT: (C)2004,JPO

17. 发明专利

JP2005256021A Austenitic stainless steel sheet for reflecting mirror 审中-公开
标题翻译：用于反射镜的奥氏体不锈钢板
公开(公告)号：JP2005256021A
公开(公告)日：2005-09-22
申请号：JP2004065541
申请日：2004-03-09
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： TAKAO KENJI , SHIMIZU HIROSHI , KOBORI KATSUHIRO , SHIOKAWA TAKASHI , YAGINUMA HIROSHI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide an austenitic stainless steel sheet for a reflecting mirror without giving rise to chatters which are extremely difficult to be removed by polishing and without giving rise to a rough surface in convex type press molding.
SOLUTION: Copper components are individually restricted to appropriate ranges and more particularly an amount of S is limited to ≤0.010%; in addition an X value (X=3.2Cr+4.8Si+3.2Mo+1.6Nb+1.6Ti-2.5Ni-1.25Mn-75C-75N-0.75Cu) is confined to ≤31.7 and further, an austenitic crystal grain size is controlled to 7.0 to 8.5.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于反射镜的奥氏体不锈钢板，而不会产生通过抛光非常难以去除的喋喋不振，并且在凸型压制成型中不产生粗糙表面。解决方案：铜成分被单独限定在适当的范围内，更特别地，S的量限制在≤0.010％。此外，X值（X = 3.2Cr + 4.8Si + 3.2Mo + 1.6Nb + 1.6Ti-2.5Ni-1.25Mn-75C-75N-0.75Cu）被限制在≤31.7，另外，奥氏体晶粒尺寸控制在7.0〜8.5。版权所有（C）2005，JPO＆NCIPI

18. 发明专利

JP2004285393A Heat resistant material 有权
公开(公告)号：JP2004285393A
公开(公告)日：2004-10-14
申请号：JP2003077922
申请日：2003-03-20
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： IDE SHINSUKE , FUKUDA KUNIO , ISHIKAWA SHIN , TAKAO KENJI , FURUKIMI OSAMU
IPC分类号： C22C38/00 , C22C38/26
摘要： PROBLEM TO BE SOLVED: To provide a heat resistant material which dose not contain Ni, has a composition containing little Al, has adequate manufacturability, and has high strength and superior oxidation resistance at a high temperature.
SOLUTION: The heat resistant material comprises 0.20 mass% or less C, 0.02-1.0 mass% Si, 2.0 mass% or less Mn, 10-40 mass% Cr, 0.01-3.0 mass% Al, 0.03-5.0 mass% Mo, 0.1-3.0 mass% Nb so as to satisfy 0.1≤Mo/Nb≤30 and 15≤Cr+10Al≤50, and the balance substantially Fe; and has intermetallic compounds precipitated in grain boundaries and an Al
2 O
3 oxide layer formed on the surface. Thereby, the increased amount after the material has been oxidized at 800°C for 1,000 hours in an atmosphere with a dew point of 30°C is made to be 2.0 g/m
2 or less. The heat resistant material further includes 1.0 mass% or less in total of one or more element selected from among Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr and Hf, as needed, to improve the peel resistance.
COPYRIGHT: (C)2005,JPO&NCIPI

19. 发明专利

JP2004018916A Ferritic stainless steel with excellent high-temperature oxidation resistance and high-temperature salt damage resistance 有权
公开(公告)号：JP2004018916A
公开(公告)日：2004-01-22
申请号：JP2002173770
申请日：2002-06-14
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MIYAZAKI ATSUSHI , TAKAO KENJI , FURUKIMI OSAMU
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To produce ferritic stainless steel having excellent high-temperature oxidation resistance and high-temperature salt damage resistance and capable of withstanding use at high temperatures exceeding 900°C.
SOLUTION: Material components are regulated to a composition range consisting of, by mass, ≤0.02% C, ≤2.0% Si, ≤2.0% Mn, 12.0 to 16.0% Cr, 1.0 to 5.0% Mo, >2.0 to 5.0% W, >0.5 to 7.0% Al, 5(C+N) to 1.0% Nb, ≤0.02% N and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2004,JPO

20. 发明专利

JP2003223904A SEPARATOR FOR FUEL CELL, ITS MANUFACTURING METHOD, AND POLYMER ELECTROLYTE FUEL CELL 审中-公开
公开(公告)号：JP2003223904A
公开(公告)日：2003-08-08
申请号：JP2002041486
申请日：2002-02-19
申请人： JFE STEEL KK
发明人： YOKOTA TAKESHI , TAKAO KENJI , ISHIKAWA SHIN , ISHII KAZUHIDE , TAKANO SHIGERU , FURUKIMI OSAMU
IPC分类号： H01M8/02 , H01M8/10
摘要： PROBLEM TO BE SOLVED: To provide a separator made of stainless steel which has excellent durability and low contact resistance, and its manufacturing method, as well as a high polymer electrolyte fuel cell using this separator. SOLUTION: With respect to the separator which contains C: 0.03 mass% or less, N: 0.03 mass% or less, C+N: 0.03 mass% or less, Cr: 20 to 45 mass%, and Mo: 0.5 to 3.0 mass% and further contains if necessary Ag of 0.001 to 0.1 mass% as a component composition, surface roughness of a convex part, which separates fuel gas flow-ways, has an arithmetic mean roughness Ra of 0.01 to 1.0 μm, and a maximum height Ry of 0.01 to 20 μm by the pressing process or pickling, and further, if necessary, a BA coat of a thickness of 10 to 300 nm is formed at least on the convex part surface. COPYRIGHT: (C)2003,JPO

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