公开(公告)号：US20190092638A1

公开(公告)日：2019-03-28

申请号：US15772582

申请日：2016-10-21

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

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

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

Abstract: 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：US11312632B2

公开(公告)日：2022-04-26

申请号：US16341624

申请日：2017-10-12

Applicant: A.L.M.T. Corp.

Inventor： Takehiko Hayashi ,  Tomoyuki Ishida ,  Takahiro Yamakawa

IPC: C01B32/949

Abstract: 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：US11293082B2

公开(公告)日：2022-04-05

申请号：US16762903

申请日：2018-11-13

Applicant: A.L.M.T. Corp.

Inventor： Takayuki Fudo ,  Kazuo Sasaya ,  Takehiko Hayashi

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

Abstract: 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：US10858252B2

公开(公告)日：2020-12-08

申请号：US15772582

申请日：2016-10-21

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

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

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

Abstract: 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.