公开(公告)号：US11293082B2

公开(公告)日：2022-04-05

申请号：US16762903

申请日：2018-11-13

申请人： A.L.M.T. Corp.

发明人： Takayuki Fudo ,  Kazuo Sasaya ,  Takehiko Hayashi

IPC分类号： C22C29/08 ,  C01B32/949 ,  C22C1/05 ,  B22F1/00

摘要： A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 μm and less than or equal to 1.5 μm, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y≤0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).

公开(公告)号：US11123841B2

公开(公告)日：2021-09-21

申请号：US16099542

申请日：2017-04-06

申请人： A.L.M.T. Corp.

发明人： Nobuhide Nakamura

IPC分类号： B24D3/06 ,  B24D3/00 ,  B24D5/14 ,  B24D3/34 ,  B24D5/02 ,  B24D18/00

摘要： A super-abrasive grinding wheel includes a core and a super-abrasive grain layer provided on a surface of the core, the super-abrasive grain layer including diamond abrasive grains and CBN abrasive grains, the diamond abrasive grains and the CBN abrasive grains being fixed to the core in a single layer by a binder. The diamond abrasive grains and the CBN abrasive grains have projecting tips acting on a workpiece, the projecting tips having a variation in height of 10 μm or less, the diamond abrasive grains having their projecting tips with irregularities of 0.1 μm or more in height.

公开(公告)号：US20210245277A1

公开(公告)日：2021-08-12

申请号：US16973612

申请日：2019-04-03

申请人： A.L.M.T. Corp.

发明人： Sakuya TANAKA ,  Koji SAWA

IPC分类号： B23D77/02

摘要： A reamer includes a core, a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, and a margin provided on a rear side of each the plurality of outer-circumference cutting edges in a rotational direction. A distance from an axis of rotation to a position of a center of gravity of the reamer is greater than 0.01 mm and not greater than 0.5 mm.

公开(公告)号：US20210002769A1

公开(公告)日：2021-01-07

申请号：US16969238

申请日：2019-01-30

申请人： Sumitomo Electric Industries, Ltd. ,  A.L.M.T. Corp.

发明人： Kengo GOTO ,  Tomoaki IKEDA ,  Akihisa HOSOE ,  Masanori SUGISAWA ,  Fukuto ISHIKAWA ,  Hideaki MORIGAMI

IPC分类号： C23C18/16 ,  C23C18/18 ,  C23C18/50 ,  C22C26/00

摘要： A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase; and a coating layer made of metal. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion, and a grain coating portion. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 μm.

公开(公告)号：US10858252B2

公开(公告)日：2020-12-08

申请号：US15772582

申请日：2016-10-21

申请人： Sumitomo Electric Industries, Ltd. ,  A.L.M.T. Corp.

发明人： Masato Michiuchi ,  Keiichi Tsuda ,  Yoshihiro Minato ,  Tomoyuki Ishida ,  Akihide Matsumoto ,  Takehiko Hayashi

IPC分类号： C01B21/082 ,  C22C1/05 ,  C22C29/04

摘要： A complex carbonitride powder contains Ti as a main component element and at least one additional element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, and Si. The complex carbonitride powder includes a plurality of complex carbonitride particles containing Ti and the additional element. The plurality of complex carbonitride particles include a plurality of homogeneous composition particles where average concentrations of Ti and the additional element in each complex carbonitride particle have a difference in a range of greater than or equal to −5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in the whole complex carbonitride powder. A cross-sectional area of the homogeneous composition particles is greater than or equal to 90% of a cross-sectional area of the complex carbonitride particles 1p.

公开(公告)号：US20200346935A1

公开(公告)日：2020-11-05

申请号：US16341624

申请日：2017-10-12

申请人： A.L.M.T. Corp.

发明人： Takehiko HAYASHI ,  Tomoyuki ISHIDA ,  Takahiro YAMAKAWA

IPC分类号： C01B32/949

摘要： Provided is a tungsten carbide powder satisfying such a condition that when the Fsss particle size thereof is represented by a (μm) and the BET particle size thereof converted from the BET specific surface area is represented by b (μm), a is 0.40 μm or more and 1.50 μm or less, and b/a is 0.17 or more and 0.35 or less.

公开(公告)号：US10553519B2

公开(公告)日：2020-02-04

申请号：US15507938

申请日：2015-09-01

申请人： A.L.M.T. Corp. ,  Sumitomo Electric Industries, Ltd.

发明人： Tatsuya Morikawa ,  Takanori Kadokura ,  Isao Iwayama

IPC分类号： F28F7/00 ,  H01L23/373 ,  B22F3/14 ,  B22F3/16 ,  F28F21/00 ,  F28F21/08 ,  H01L21/48

摘要： A heat radiating member includes: a composite portion composed of a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; and a metal layer formed on at least one surface of the composite portion and composed of a metal. A method for producing a heat radiating member includes: a preparation step to prepare a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; a powder arrangement step to dispose a metal powder composed of metal particles on at least one surface of the composite material; and a heating step to heat the composite material and the metal powder, with the metal powder disposed on the composite material, to form a metal layer composed of a metal of the metal powder on a composite portion composed of the composite material.

公开(公告)号：US20190329308A1

公开(公告)日：2019-10-31

申请号：US16473450

申请日：2017-12-08

申请人： A.L.M.T. Corp.

发明人： Toshiaki SHINDO ,  Takuya ASANUMA

IPC分类号： B21C3/02 ,  B21C3/06

摘要： A shaped diamond die includes a polycrystalline diamond, the polycrystalline diamond having a machining hole, wherein a length D of a side of the machining hole is 100 μm or less, a corner R is 20 μm or less, the shaped diamond die includes a bearing portion, a surface roughness Sa of the bearing portion is 0.05 μm or less, and an average grain size of the polycrystalline diamond is 500 nm or less.

公开(公告)号：US10011890B2

公开(公告)日：2018-07-03

申请号：US14775824

申请日：2014-03-06

申请人： A.L.M.T. Corp.

发明人： Takeshi Itakura ,  Akihiko Ikegaya ,  Yoshiharu Yamamoto

IPC分类号： C22B34/36 ,  C01G41/00 ,  C22B7/00

CPC分类号： C22B34/36 ,  C01G41/00 ,  C22B7/00 ,  C22B7/001 ,  Y02P10/214 ,  Y02P10/234

摘要： A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.

公开(公告)号：US09347120B2

公开(公告)日：2016-05-24

申请号：US14000247

申请日：2012-02-20

申请人： Isao Iwayama ,  Taichiro Nishikawa ,  Toshiya Ikeda ,  Shigeki Koyama

发明人： Isao Iwayama ,  Taichiro Nishikawa ,  Toshiya Ikeda ,  Shigeki Koyama

IPC分类号： C22C29/06 ,  H01L23/15 ,  H01L23/373 ,  H01L23/34 ,  C25D7/12 ,  C04B41/88 ,  C04B41/00 ,  C04B41/51 ,  C22C1/10 ,  C04B111/00

CPC分类号： C22C29/065 ,  B22F2999/00 ,  C04B41/009 ,  C04B41/515 ,  C04B41/88 ,  C04B2111/00844 ,  C22C2001/1073 ,  C22C2204/00 ,  C25D7/12 ,  H01L23/15 ,  H01L23/34 ,  H01L23/3731 ,  H01L23/3735 ,  H01L23/3736 ,  H01L2924/0002 ,  Y10T428/24612 ,  Y10T428/2495 ,  Y10T428/263 ,  B22F3/02 ,  B22F3/10 ,  B22F3/26 ,  C25D7/00 ,  C23C18/00 ,  H01L2924/00 ,  C04B35/565 ,  C04B38/00 ,  C04B41/4523

摘要： A composite member has a substrate made of a composite material having SiC combined with magnesium or a magnesium alloy, and has a warpage degree of not less than 0.01×10−3 and not more than 10×10−3, the warpage degree being defined as lmax/Dmax, where lmax being a difference between a maximum value and a minimum value of surface displacement of one surface of composite member measured along a longest side thereof, and Dmax being a length of the longest side. Thereby, a composite member capable of efficiently dissipating heat to an installation object, a heat-dissipating member using the composite member, and a semiconductor device having the heat-dissipating member are provided.

摘要翻译： 复合构件具有由具有与镁或镁合金组合的SiC的复合材料制成的基板，并且具有不小于0.01×10-3且不大于10×10-3的翘曲度，所述翘曲度被限定 作为lmax / Dmax，其中lmax是沿其最长侧测量的复合构件的一个表面的表面位移的最大值和最小值之间的差，Dmax是最长侧的长度。 因此，提供一种能够有效地散热到安装对象的复合构件，使用该复合构件的散热构件以及具有该散热构件的半导体装置。