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1. 发明授权

US06251157B1 Sintered alloy having superb wear resistance and process for producing the same 有权
标题翻译：具有优良耐磨性的烧结合金及其制造方法
公开(公告)号：US06251157B1
公开(公告)日：2001-06-26
申请号：US09376855
申请日：1999-08-18
申请人： Yoshimasa Aoki , Koichiro Hayashi , Koichi Aonuma , Toru Tsuboi
发明人： Yoshimasa Aoki , Koichiro Hayashi , Koichi Aonuma , Toru Tsuboi
IPC分类号： C22C110
CPC分类号： C22C33/0221 , F02F7/0085 , F16C33/043 , F16C33/121
摘要： A sintered alloy having superb wear resistance comprising: composite phases dispersed in a matrix of the sintered alloy; the composite phase consisting of; a particle group in which Cr carbide particles and Cr sulfide particles exist in a mixed condition; and a ferrite phase or a mixture phase of ferrite and austenite surrounding the particle group as a core.
摘要翻译：一种具有优异耐磨性的烧结合金，其特征在于包括：分散在烧结合金基质中的复合相; 复合相组成; 在混合状态下存在Cr碳化物粒子和Cr硫化物粒子的粒子群; 铁素体相或铁素体和奥氏体的混合相围绕粒子群为核心。

2. 发明授权

US5824922A Wear-resistant sintered alloy, and its production method 失效
标题翻译：耐磨烧结合金及其制造方法
公开(公告)号：US5824922A
公开(公告)日：1998-10-20
申请号：US779517
申请日：1997-01-07
申请人： Koichi Aonuma , Yoshimasa Aoki , Koichiro Hayashi
发明人： Koichi Aonuma , Yoshimasa Aoki , Koichiro Hayashi
IPC分类号： F01L3/02 , C22C33/02 , C22C38/00 , C22C38/44 , C22C38/56 , C22C29/02
CPC分类号： C22C33/0207 , C22C33/0257
摘要： The invention provides a valve seat having a suitable degree of wear resistance, which can be produced without recourse to expensive elements represented by cobalt and at a cost lower than ever before. This valve seat is formed of a wear-resistant sintered alloy having a general composition consisting essentially of, in weight ratio, 0.736 to 9.65% of nickel, 0.736 to 2.895% of copper, 0.294 to 0.965% of molybdenum, 0.12 to 6.25% of chromium, and 0.508 to 2.0% of carbon with the balance being iron, and inevitable impurities, and having a metallic structure in which there are dispersed (1) a martensite, (2) a bainite having a nucleus of sorbite and/or upper bainite and surrounding said nucleus, (3) an austenite having a high nickel concentration, and (4) a hard phase surrounding with a ferrite having a high chromium concentration and composed mainly of a chromium carbide.
摘要翻译：本发明提供了具有适当程度的耐磨性的阀座，其可以在不用以钴代表的昂贵元件的情况下生产，而且成本比以往低。该阀座由耐磨烧结合金形成，该耐磨烧结合金的总体组成基本上由以下组成：重量比为镍的0.736〜9.65％，铜的0.736〜2.895％，钼的0.294〜0.965％，钼的0.12〜6.25％铬和0.508〜2.0％的碳，余量为铁和不可避免的杂质，并且具有分散（1）马氏体的金属结构，（2）具有索氏体和/或上贝氏体核的贝氏体并围绕所述核，（3）具有高镍浓度的奥氏体，以及（4）围绕铬酸盐浓度高且主要由碳化铬组成的铁素体的硬相。

3. 发明授权

US5834664A Wear-resistant sintered alloy, and its production method 失效
标题翻译：耐磨烧结合金及其制造方法
公开(公告)号：US5834664A
公开(公告)日：1998-11-10
申请号：US779524
申请日：1997-01-07
申请人： Koichi Aonuma , Yoshimasa Aoki , Koichiro Hayashi
发明人： Koichi Aonuma , Yoshimasa Aoki , Koichiro Hayashi
IPC分类号： C22C33/02 , C22C38/00 , F01L3/22 , F02F7/00 , B22F9/00
CPC分类号： F01L3/22 , C22C33/0257 , F02F7/0085
摘要： The present invention provides a valve seat having a suitable degree of wear resistance, which can be produced without recourse to expensive elements represented by cobalt and at a cost lower than ever before. This valve seat is formed of a wear-resistant sintered alloy having a general composition consisting essentially of, in weight ratio, 0.736 to 5.79% of nickel, 0.12 to 6.25% of chromium, 0.294 to 0.965% of molybdenum, and 0.508 to 2.0% of carbon with the balance being iron, and inevitable impurities, and having a micro structure wherein a bainite matrix structure or a mixed bainite and sorbite matrix structure includes a nucleus having a hard phase composed mainly of chromium carbide, and a ferrite surrounding said nucleus and having a high chromium concentration and a martensite surrounding said ferrite are dispersed.
摘要翻译：本发明提供了具有适当程度的耐磨性的阀座，其可以在不用以钴代表的昂贵元件的情况下生产，并且成本低于之前的成本。该阀座由耐磨烧结合金形成，该耐磨烧结合金的总体组成主要由重量比为镍的0.736至5.79％，铬0.12至6.25％，钼的0.294-0.965％和钼的0.508至2.0％的碳，余量为铁和不可避免的杂质，并且具有微结构，其中贝氏体基体结构或混合贝氏体和索氏体基体结构包括具有主要由碳化铬组成的硬相的核和围绕所述核的铁素体，以及具有高铬浓度和围绕所述铁素体的马氏体分散。

4. 发明授权

US06302937B1 Sintered alloy having superior wear resistance 失效
标题翻译：烧结合金具有优异的耐磨性
公开(公告)号：US06302937B1
公开(公告)日：2001-10-16
申请号：US09450204
申请日：1999-11-29
申请人： Koichiro Hayashi , Yoshimasa Aoki , Koichi Aonuma
发明人： Koichiro Hayashi , Yoshimasa Aoki , Koichi Aonuma
IPC分类号： C22C3300
CPC分类号： C22C38/56 , B22F2998/00 , C22C33/0207 , C22C33/0285 , C22C38/36 , C22C38/44 , C22C38/46 , C22C33/0228 , C22C33/0242
摘要： The present invention provides a sintered material having high mechanical strength and superior wear resistance, and to a process of manufacture therefor. A sintered alloy having superior wear resistance has an overall composition consisting of, in percent by weight, Ni in an amount of 6.0 to 25.0%, Cr in an amount of 0.6 to 8.75%, C in an amount of 0.54 to 2.24%, and balance consisting of Fe, the sintered alloy exhibiting a metallographic structure in which the following hard phase is dispersed in a mixed structure of martensite and austenite, the hard phase comprising a core consisting of Cr carbide and a ferrite phase diffused Cr, or a mixed phase of ferrite and austenite diffused Cr, surrounding the core, and an area ratio of austenite in the mixed structure in the metallographic structure ranging from 5 to 30%.
摘要翻译：本发明提供一种具有高机械强度和优异耐磨性的烧结材料及其制造方法。具有优异的耐磨性的烧结合金具有以重量％计含有6.0〜25.0％的Ni，0.6〜8.75％的Cr，0.54〜2.24％的C，以及0.54〜2.24％的C，余量由Fe组成，烧结合金呈现金相组织，其中以下硬相分散在马氏体和奥氏体的混合结构中，硬质相包含由碳化铬和铁素体相扩散的Cr组成的芯，或混合相的铁素体和奥氏体扩散Cr，围绕芯，并且金相组织中的混合结构中奥氏体的面积比为5〜30％。

5. 发明申请

US20060032328A1 Sintered valve guide and manufacturing method thereof 审中-公开
标题翻译：烧结阀导向及其制造方法
公开(公告)号：US20060032328A1
公开(公告)日：2006-02-16
申请号：US11182638
申请日：2005-07-14
申请人： Katsunao Chikahata , Koichiro Hayashi , Hiroki Fujitsuka , Toru Tsuboi
发明人： Katsunao Chikahata , Koichiro Hayashi , Hiroki Fujitsuka , Toru Tsuboi
IPC分类号： C22C33/02
CPC分类号： C22C38/16 , B22F2998/00 , B22F2999/00 , C22C9/02 , C22C33/0214 , C22C33/0228 , C22C38/002 , C22C38/008 , F01L3/02 , F01L3/08 , F01L2101/00 , C22C33/0221 , B22F3/1028 , C22C33/0207 , B22F9/082 , B22F9/22
摘要： Disclosed is a sintered valve guide guide formed of a sintered alloy consisting essentially of 3.5 to 5% copper, 0.3 to 0.6% tin, 0.04 to 0.15% phosphorus, 1.5 to 2.5% carbon and the balance iron, by mass, and as occasion needs, further containing 0.46 to 1.41% metal oxide, and MnS and/or magnesium silicate. The metallographic structure has: a matrix containing a pearlite phase, a Fe—P—C compound phase and a Cu—Sn alloy phase; pores; and a graphite of 1.2 to 1.7% by mass of the sintered alloy. In the cross section, the ratio of the pearlite phase to the matrix is 90 area % or more, the ratio of the Fe—P—C compound phase is 0.1 to 3 area % of the cross section, the ratio of the Cu—Sn alloy phase to the cross section is 1 to 3% by area, and the ratio of a portion of the Fe—P—C compound phase having a thickness of 15 microns or more is 10 area % or less of the whole Fe—P—C compound phase.
摘要翻译：公开了一种由基本上由3.5〜5％的铜，0.3〜0.6％的锡，0.04〜0.15％的磷，1.5〜2.5％的碳和余量的铁组成的烧结合金的烧结的导向引导件，并且根据需要，还含有0.46〜1.41％的金属氧化物，MnS和/或硅酸镁。金相结构具有：含有珠光体相，Fe-P-C化合物相和Cu-Sn合金相的基体; 毛孔以及烧结合金的1.2〜1.7质量％的石墨。在截面中，珠光体相与基体的比例为90面积％以上，Fe-PC化合物相的比例为截面的0.1〜3面积％，Cu-Sn合金相的比例横截面为1〜3面积％，Fe-PC化合物相的厚度为15微米以上的部分的比例为整个Fe-PC化合物相的10面积％以下。

6. 发明授权

US06660056B2 Valve seat for internal combustion engines 有权
标题翻译：内燃机用阀座
公开(公告)号：US06660056B2
公开(公告)日：2003-12-09
申请号：US09846824
申请日：2001-05-01
申请人： Koichiro Hayashi , Hideaki Kawata , Toru Tsuboi
发明人： Koichiro Hayashi , Hideaki Kawata , Toru Tsuboi
IPC分类号： C22C105
CPC分类号： C22C33/0264 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C33/0207 , C22C38/12 , C22C38/16 , C22C38/18 , F01L3/02 , C22C33/0228 , B22F3/02 , B22F3/10 , B22F3/1007 , B22F2201/016
摘要： A valve seat is provided in which wear resistance can be ensured by optimizing the matrix structure without dispersing of expensive hard particles, and therefore the machinability can be improved and the holding down of cost can be achieved. The valve seat exhibits a metallographic structure consisting of only bainite single phase or only a mixed phase of bainite and martensite, has an area ratio of bainite and martensite in cross section of 100:0 to 50:50, and has a matrix hardness of 250 to 850 Hv.
摘要翻译：提供了一种阀座，其中通过优化基体结构而不会分散昂贵的硬质颗粒，可以确保耐磨性，因此可以提高切削性，并且可以实现成本的降低。阀座呈现由贝氏体单相或贝氏体和马氏体的混合相组成的金相结构，贝氏体和马氏体的面积比为100:0〜50:50，基体硬度为250 到850 Hv。

7. 发明授权

US5949003A High-temperature wear-resistant sintered alloy 失效
标题翻译：高温耐磨烧结合金
公开(公告)号：US5949003A
公开(公告)日：1999-09-07
申请号：US833195
申请日：1997-04-14
申请人： Yoshimasa Aoki , Kei Ishii , Koichiro Hayashi , Kouichi Aonuma , Hideaki Kawata , Kunio Maki , Atsushi Ehira , Akira Fujiki , Sadayuki Abo , Seigo Sato
发明人： Yoshimasa Aoki , Kei Ishii , Koichiro Hayashi , Kouichi Aonuma , Hideaki Kawata , Kunio Maki , Atsushi Ehira , Akira Fujiki , Sadayuki Abo , Seigo Sato
IPC分类号： C22C33/02 , C22C33/00
CPC分类号： C22C33/0257
摘要： The invention relates to a sintered alloy. This sintered 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.
摘要翻译：本发明涉及一种烧结合金。该烧结合金包含3-13.4重量％的W，0.4-5.6重量％或0.8-5.9重量％的V，0.2-5.6重量％的Cr，0.1-0.6重量％或0.6-5.0重量％的Si，0.1- 0.6重量％或0.2-1.0重量％的Mn，0.6-2.2重量％的C，余量为Fe。烧结合金包括分别以斑点形式分布在其中的第一相和第二相。基于第一相和第二相的总重量，第二相的量为20〜80重量％。第一相包含3-7重量％的W，0.5-1.5重量％的任选的V，至多1重量％的Cr，0.1-0.6重量％或0.6-5.0重量％的Si，0.1-0.6重量％或0.2 -1.0重量％的Mn，至多2.2重量％的C，余量为Fe。第二相含有3-15重量％的W，2-7重量％的V，1-7重量％的Cr，0.1-0.6重量％或0.6-5.0重量％的Si，0.1-0.6重量％或0.2- 1.0重量％的Mn，至多2.2重量％的C，余量为Fe。当第一相和第二相的锰含量和烧结合金的总量分别在0.2〜1.0重量％的范围内时，其中分别含有0.1〜0.6重量％的硫。烧结合金在高温下具有耐磨性和良好的相容性，而不损害与烧结合金接触的配合部分。

8. 发明授权

US06340377B1 High-temperature wear-resistant sintered alloy 失效
标题翻译：高温耐磨烧结合金
公开(公告)号：US06340377B1
公开(公告)日：2002-01-22
申请号：US09547340
申请日：2000-04-11
申请人： Hideaki Kawata , Kei Ishii , Koichiro Hayashi , Yoshimasa Aoki , Atsushi Ehira , Kunio Maki , Masaki Toriumi
发明人： Hideaki Kawata , Kei Ishii , Koichiro Hayashi , Yoshimasa Aoki , Atsushi Ehira , Kunio Maki , Masaki Toriumi
IPC分类号： C22C3300
CPC分类号： C22C38/60 , B22F2998/00 , C22C33/0257 , C22C38/22 , C22C38/24 , C22C38/38 , C22C33/0242
摘要： The invention relates to an iron-based high-temperature wear-resistant sintered alloy. This alloy contains 3.74-13.36 wt % W, 0.39-5.58 wt % V, 0.2-5.78 wt % Cr, 0.1-0.6 wt % Si, 0.39-1.99 wt % Mn, 0.21-1.18 wt % S, and up to 2.16 wt % C. This alloy includes 20-80 wt % of a first phase and 80-20 wt % of a second phase, each distributed therein, in the form of spots. The first phase contains 3-7 wt % W, up to 1 wt % Cr, 0.1-0.6 wt % Si, 0.2-1 wt % Mn, 0.1-0.6 wt % S, and up to 2.2 wt % C. The first phase may contain 0.5-1.5 wt % V, and in this case the vanadium content of the alloy becomes 0.79-5.88 wt %. The second phase contains 7-15 wt % W, 2-7 wt % V, 1-7 wt % Cr, 0.1-0.6 wt % Si, 0.2-1 wt % Mn, 0.1-0.6 wt % S, and up to 2.2 wt % of C. Each phase contains 0.3-1.6 wt % MnS and a carbide of at least tungsten, which are dispersed therein. The second phase further contains 10-20 areal % tungsten carbide (particle diameter: ≧1 &mgr;m) dispersed therein. The alloy further contains 0.3-16 wt % MnS grains dispersed in grain boundaries and/or pores. The alloy is greatly improved in wear resistance, while suppressing damage to mating part in contact with the alloy.
摘要翻译：本发明涉及铁基高温耐磨烧结合金。该合金含有3.74-13.36重量％W，0.39-5.58重量％V，0.2-5.78重量％Cr，0.1-0.6重量％Si，0.39-1.99重量％Mn，0.21-1.18重量％S和至多2.16重量％％C。该合金包括20-80重量％的第一相和80-20重量％的第二相，各自以斑点的形式分布在其中。第一相包含3-7重量％的W，至多1重量％的Cr，0.1-0.6重量％的Si，0.2-1重量％的Mn，0.1-0.6重量％的S和至多2.2重量％的C。第一相可以含有0.5-1.5重量％的V，在这种情况下合金的钒含量为0.79-5.88重量％。第二相包含7-15重量％W，2-7重量％V，1-7重量％Cr，0.1-0.6重量％Si，0.2-1重量％Mn，0.1-0.6重量％S和至多2.2 每个相含有0.3-1.6重量％的MnS和至少分散在其中的钨的碳化物。第二相还包含分散在其中的10-20个区域％碳化钨（粒径：> =1μm）。该合金还含有分散在晶界和/或孔中的0.3-16重量％的MnS晶粒。该合金的耐磨性大大提高，同时抑制与合金接触的配合部件的损伤。

9. 发明授权

US08036060B2 Semiconductor device in which a memory array is refreshed based on an address signal 有权
标题翻译：基于地址信号刷新存储器阵列的半导体器件
公开(公告)号：US08036060B2
公开(公告)日：2011-10-11
申请号：US12427237
申请日：2009-04-21
申请人： Koichiro Hayashi
发明人： Koichiro Hayashi
IPC分类号： G11C7/00
CPC分类号： G11C11/4076 , G11C7/1051 , G11C7/106 , G11C7/1066 , G11C7/22 , G11C7/222 , G11C11/406 , G11C11/40611 , G11C11/4093
摘要： In an SDRAM of reduced current consumption, a signal RAS for performing refresh while temporally splitting refresh becomes active N times (where N is an integer and Nε2 holds) in a single refresh time period (indicated by a signal REF) to thereby refresh an internal memory array successively. The SDRAM includes a DLL circuit for aligning phase of an internal clock signal with that of an external clock signal that is externally supplied, and a DLL control circuit for exercising control so as to halt operation of the DLL circuit in an interval in which the address signal becomes active one or more times and N−1 times or fewer, this interval being included in an interval in which the signal RAS becomes active N times. The DLL control circuit counts the signal RAS and decodes the value of the count. Operation of the DLL circuit is halted while a prescribed range of count values is being decoded.
摘要翻译：在具有降低的电流消耗的SDRAM中，在单个刷新时间段（由信号REF表示）中用于在时间分割刷新时进行刷新的信号RAS变为有效N次（其中N是整数并且N＆amp; 2成立）内部存储器阵列。 SDRAM包括用于将内部时钟信号与外部提供的外部时钟信号的相位对准的DLL电路，以及用于进行控制的DLL控制电路，以便在该区域中停止DLL电路的操作信号变为活动一次或多次，并且N-1次或更少，该间隔被包括在信号RAS变为有效N次的间隔中。 DLL控制电路对信号RAS进行计数，并对计数值进行解码。在对规定范围的计数值进行解码的同时停止DLL电路的动作。

10. 发明授权

US07869299B2 Internal-voltage generating circuit and semiconductor device including the same 有权
标题翻译：内部电压产生电路和包括其的半导体器件
公开(公告)号：US07869299B2
公开(公告)日：2011-01-11
申请号：US12259846
申请日：2008-10-28
申请人： Koichiro Hayashi , Hitoshi Tanaka
发明人： Koichiro Hayashi , Hitoshi Tanaka
IPC分类号： G11C7/00
CPC分类号： G11C5/145 , G11C8/08 , G11C11/4074 , G11C11/4085 , H02M3/07
摘要： An internal-voltage generating circuit includes a plurality of generating units connected in cascade, out of the plurality of generating units, a generating unit of relatively lower level is activated by an output of a generating unit of relatively higher level. According to the present invention, because the plural voltage generating units are connected in cascade, the voltage generating unit of lower level is not activated unless the voltage generating unit of higher level is activated. Therefore, at least the voltage generating unit of the second level and the subsequent voltage generating units consume very small power during the standby time. Consequently, total power consumption of the internal-voltage generating circuit can be reduced.
摘要翻译：一个内部电压产生电路包括串联连接的多个发生单元，在多个发电单元中，相对较低电平的发电单元由相对较高电平的发电单元的输出激活。根据本发明，由于多个电压发生单元串联连接，所以低电平产生单元不被激活，除非上电电压产生单元被激活。因此，至少第二级的电压产生单元和随后的电压产生单元在待机时间内消耗非常小的功率。因此，可以降低内部电压产生电路的总功耗。

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