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1. 发明专利

GB2312217A High-temperature wear-resistant sintered alloy 未知
公开(公告)号：GB2312217A
公开(公告)日：1997-10-22
申请号：GB9707598
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： F01L3/02 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/24 , C22C38/46
摘要： The alloy includes 3-13.4 wt% of W, 0.4-5.6 wt% or 0.8-5.9 wt% of V, 0.2-5.6 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, 0.6-2.2 wt% of C, and a Balance of Fe. The sintered alloy includes first and second phase which are distributed therein, in a form of spots, respectively. The second phase is in an amount of from 20 to 80 wt%, based on the total weight of the first and second phases. The first phase contains 3-7 wt% of W, 0.5-1.5 wt% of optional V, up to 1 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. The second phase contains 3-15 wt% of W, 2-7 wt% of V, 1-7 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. When the manganese contents of the first and second phases and the total of the sintered alloy are respectively in a range of from 0.2 to 1.0 wt%, sulfur is respectively contained therein in an amount of from 0.1 to 0.6 wt%. The sintered alloy has wear-resistant at high temperature and good compatibility without damaging mating part that is in contact with the sintered alloy.

2. 发明专利

DE19506340C2 未知
公开(公告)号：DE19506340C2
公开(公告)日：1999-02-11
申请号：DE19506340
申请日：1995-02-23
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： ISHII KEI , AOKI YOSHIMASA , KAWATA HIDEAKI , FUJIKI AKIRA , NAKAMURA KATSUYUKI , TAKAHASHI KAZUHIKO
IPC分类号： C22C33/02 , C22C38/00 , C22C38/60 , F01L3/04 , F02B1/04 , F02B3/06 , C22C38/10 , B22F3/16 , C22C1/04 , F01L3/02
摘要： Disclosed is a sintered iron alloy and a method of manufacturing the same. The sintered alloy comprises: an alloy matrix and a lead phase for imparting lubricability to the sintered alloy. The alloy matrix comprises a first alloy phase being composed of 0.5 to 3% nickel by weight, 0.5 to 3% molybdenum by weight, 5.5 to 7.5% cobalt by weight, 0.6 to 1.2% carbon by weight, and the balance iron, and a second alloy phase being composed of 26 to 30% molybdenum by weight, 7 to 9% chromium by weight, 1.5 to 2.5% silicon by weight, and the balance cobalt. The content of the lead phase in the sintered alloy is not more than 3.5% by weight. The lead phase is dispersed in the alloy matrix and a pore which is formed in the alloy matrix. The ratio of the lead dispersed in the alloy matrix to the total lead phase is 60% by weight or more, and the lead phase dispersed in the alloy matrix is particles in which the maximum particle size is 10 mu m or less. In manufacture, a lead powder having a particle size of approximately 50 mu m or less is mixed a first raw material powder for the first alloy phase and a second raw material powder for the second alloy phase at a lead content of not more than 3.5% by weight. After compacting and sintering the mixture, the sintered compact is cooled so that the temperature of the compact in the vicinity of 328 DEG C. is cooled at a cooling rate of approximately 2 DEG C./min. or more.

3. 发明专利

DE60225767T2 未知
公开(公告)号：DE60225767T2
公开(公告)日：2009-04-16
申请号：DE60225767
申请日：2002-08-06
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： FUJITSUKA HIROKI , KAWATA HIDEAKI , HAYASHI KOICHIRO , MIYAZAWA TOMONORI , KOYANAGI KOJI , FUJIKI AKIRA , MURAMATSU HIDEKI , MAKI KUNIO , OKADA YOSHIO , NOMURA SHIN
IPC分类号： C22C33/02 , F01L3/02 , B22F3/26 , B22F5/00 , C22C38/00 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/44 , C22C38/60
摘要： A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase comprising Mo silicide particles dispersed in an Fe-based alloy matrix of the first hard phase and a second hard phase comprising a ferrite phase or a mixed phase of ferrite and austenite having a higher Cr concentration than the Fe-based alloy matrix surrounding a core consisting of Cr carbide particles, are diffused in an Fe-based alloy matrix, the Mo silicide particles are contained in the first hard phase in an amount of 3 to 25% by area, and the Cr carbide particles are contained in the second hard phase in an amount of 3 to 30% by area.

4. 发明专利

AT390495T 未知
公开(公告)号：AT390495T
公开(公告)日：2008-04-15
申请号：AT02017527
申请日：2002-08-06
申请人： HITACHI POWDERED METALS , NISSAN MOTOR
发明人： FUJITSUKA HIROKI , KAWATA HIDEAKI , HAYASHI KOICHIRO , MIYAZAWA TOMONORI , KOYANAGI KOJI , FUJIKI AKIRA , MURAMATSU HIDEKI , MAKI KUNIO , OKADA YOSHIO , NOMURA SHIN
IPC分类号： C22C33/02 , F01L3/02 , B22F3/26 , B22F5/00 , C22C38/00 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/44 , C22C38/60
摘要： A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase comprising Mo silicide particles dispersed in an Fe-based alloy matrix of the first hard phase and a second hard phase comprising a ferrite phase or a mixed phase of ferrite and austenite having a higher Cr concentration than the Fe-based alloy matrix surrounding a core consisting of Cr carbide particles, are diffused in an Fe-based alloy matrix, the Mo silicide particles are contained in the first hard phase in an amount of 3 to 25% by area, and the Cr carbide particles are contained in the second hard phase in an amount of 3 to 30% by area.

5. 发明专利

DE19715708A1 High temperature wear resistant sintered alloy 未知
公开(公告)号：DE19715708A1
公开(公告)日：1997-10-16
申请号：DE19715708
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： C22C33/02 , C22C38/12
摘要： A sintered alloy comprises (based on the total weight of the alloy), 3-13.4 wt.% of W, 0.4-5.6 wt.% of V, 0.2-5.6 wt.% of Cr, 0.1-0.6 wt.% of Si, 0.1-0.6 wt.% of Mn, 0.6-2.2 wt.% of C, and a balance of Fe. The sintered alloy includes: (A) a first phase comprising (based on the total weight of the first phase) 3-7 wt.% of W, up to 1 wt.% of Cr, 0.1-0.6 wt.% of Si, 0.1-0.6 wt.% of Mn, up to 2.2 wt.% of C and a balance of Fe; and (B) a second phase comprising (based on the total weight of the second phase) 3-15 wt.% of W, 2-7 wt.% of V, 1-7 wt.% of Cr, 0.1-0.6 wt.% of Si, 0. 1-0.6 wt.% of Mn, up to 2.2 wt.% of C and a balance of Fe. The second phase is in an amount of 20-80 wt.% (based on the total weight of the first and second phases) where the first and second phases are distributed in the sintered alloy, in a form of spots, respectively. Also claimed are: (1) an alloy as above which comprises 0.8-5.9 wt.% of V, with the first phase additionally comprising 0.5-1.5 wt.% of V; (2) an alloy as above which comprises 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first and second phases comprising 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; (3) an alloy as above which comprises 0.8-5.9 wt.% of V, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first phase comprising 0.5-1.5 wt.% of V, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S and the second phase comprising 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; (4) an alloy as above which comprises 0.6-5.0 wt.% of Si, with the first and second phases comprising 0.6-5.0 wt.% of Si; (5) an alloy as above which comprises 0.8-5.9 wt.% of V and 0.6-5.0 wt.% of Si, with the first phase comprising 0.5-1.5 wt.% of V and 0.6-5.0 wt.% of Si and the second phase comprising 0.6-5.0 wt.% of Si; (6) an alloy as above which comprises 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first and second phases comprising 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; and (7) an alloy as above which comprises 0.8-5.9 wt.% of V, 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first phase comprising 0.5-1.5 wt.% of V, 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S and the second phase comprising 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S.

6. 发明专利

DE19506340A1 Sintered alloy used for sliding element in corrosive environments 未知
公开(公告)号：DE19506340A1
公开(公告)日：1995-08-24
申请号：DE19506340
申请日：1995-02-23
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： ISHII KEI , AOKI YOSHIMASA , KAWATA HIDEAKI , FUJIKI AKIRA , NAKAMURA KATSUYUKI , TAKAHASHI KAZUHIKO
IPC分类号： C22C33/02 , C22C38/00 , C22C38/60 , F01L3/04 , F02B1/04 , F02B3/06 , C22C38/10 , C22C38/08 , B22F3/16 , C22C1/04 , F01L3/02
摘要： A sintered alloy comprises (a) an alloy matrix contg. a 1st alloy phase consisting of (wt.%) 0.3-5 Ni, 0.5-3 Mo, 5.5-7.5 Co, 0.6-1.2 C, and a balance of Fe, and a 2nd alloy phase consisting of (wt.%) 26-30 Mo, 7-9 Cr, 1.5-2.2 Si, and balance of Co; and (b) a Pb phase of 3.5 wt.% contained in the sintered alloy. A part of the Pb phase is dispersed in the alloy matrix and the remaining part is dispersed in a hollow space (pore), formed in the matrix. The ratio of the part of the Pb phase to the total amt. of Pb phase is 60 wt.% or more, and the part of the Pb phase is dispersed in the form of particles, whose max. particle size is 10 mu m or less. Prodn. of the sintered alloy is also claimed.

7. 发明专利

DE60225767D1 未知
公开(公告)号：DE60225767D1
公开(公告)日：2008-05-08
申请号：DE60225767
申请日：2002-08-06
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： FUJITSUKA HIROKI , KAWATA HIDEAKI , HAYASHI KOICHIRO , MIYAZAWA TOMONORI , KOYANAGI KOJI , FUJIKI AKIRA , MURAMATSU HIDEKI , MAKI KUNIO , OKADA YOSHIO , NOMURA SHIN
IPC分类号： C22C33/02 , F01L3/02 , B22F3/26 , B22F5/00 , C22C38/00 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/44 , C22C38/60
摘要： A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase comprising Mo silicide particles dispersed in an Fe-based alloy matrix of the first hard phase and a second hard phase comprising a ferrite phase or a mixed phase of ferrite and austenite having a higher Cr concentration than the Fe-based alloy matrix surrounding a core consisting of Cr carbide particles, are diffused in an Fe-based alloy matrix, the Mo silicide particles are contained in the first hard phase in an amount of 3 to 25% by area, and the Cr carbide particles are contained in the second hard phase in an amount of 3 to 30% by area.

8. 发明专利

DE19715708B4 未知
公开(公告)号：DE19715708B4
公开(公告)日：2005-09-01
申请号：DE19715708
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： C22C33/02

9. 发明专利

GB2312217B High-temperature wear-resistant sintered alloy 未知
公开(公告)号：GB2312217B
公开(公告)日：1998-03-04
申请号：GB9707598
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： F01L3/02 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/24 , C22C38/46
摘要： The alloy includes 3-13.4 wt% of W, 0.4-5.6 wt% or 0.8-5.9 wt% of V, 0.2-5.6 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, 0.6-2.2 wt% of C, and a Balance of Fe. The sintered alloy includes first and second phase which are distributed therein, in a form of spots, respectively. The second phase is in an amount of from 20 to 80 wt%, based on the total weight of the first and second phases. The first phase contains 3-7 wt% of W, 0.5-1.5 wt% of optional V, up to 1 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. The second phase contains 3-15 wt% of W, 2-7 wt% of V, 1-7 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. When the manganese contents of the first and second phases and the total of the sintered alloy are respectively in a range of from 0.2 to 1.0 wt%, sulfur is respectively contained therein in an amount of from 0.1 to 0.6 wt%. The sintered alloy has wear-resistant at high temperature and good compatibility without damaging mating part that is in contact with the sintered alloy.

10. 发明专利

GB2446911B Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor 未知
公开(公告)号：GB2446911B
公开(公告)日：2010-03-31
申请号：GB0724036
申请日：2007-12-10
申请人： HITACHI POWDERED METALS
发明人： YOSHIHIRO TATSUAKI , KAWATA HIDEAKI , FUJITSUKA HIROKI , MAKI KUNIO , TSUBOI TORU
IPC分类号： F01L3/02 , C22C1/05 , C22C29/02 , C22C29/14 , C22C29/18 , C22C33/02
摘要： A manufacturing method for wear resistant sintered member is provided. The method includes: compacting a raw powder containing a matrix forming powder and a hard phase forming powder into a green compact, the matrix forming powder containing 90 mass % or more of a powder having the maximum particle diameter of 46 μm, and the hard phase forming powder being 40 to 70 mass % with respect to the raw powder; and sintering the green compact.

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