	US 12,467,119 B2
	Diamond sintered material and tool including diamond sintered material
Hirotsugu Iwasaki, Hyogo (JP); Akihiko Ueda, Hyogo (JP); Michiko Matsukawa, Hyogo (JP); Satoru Kukino, Hyogo (JP); and Kei Hirai, Osaka (JP)
Assigned to SUMITOMO ELECTRIC HARDMETAL CORP., Hyogo (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 18/032,168
Filed by SUMITOMO ELECTRIC HARDMETAL CORP., Hyogo (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Oct. 5, 2021, PCT No. PCT/JP2021/036845 § 371(c)(1), (2) Date Apr. 15, 2023, PCT Pub. No. WO2022/085438, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. PCT/JP2020/039756 (WO), filed on Oct. 22, 2020.
Prior Publication US 2023/0383387 A1, Nov. 30, 2023
Int. Cl. C22C 26/00 (2006.01); B22F 3/10 (2006.01); B22F 3/24 (2006.01); B22F 5/00 (2006.01); B23B 27/14 (2006.01); C22C 1/05 (2023.01)

CPC C22C 26/00 (2013.01) [B22F 3/1003 (2013.01); B22F 3/24 (2013.01); B22F 5/00 (2013.01); B23B 27/148 (2013.01); C22C 1/05 (2013.01); B22F 2003/248 (2013.01); B22F 2005/001 (2013.01); B22F 2201/20 (2013.01); B22F 2301/15 (2013.01); B22F 2302/406 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); B23B 2226/31 (2013.01)]

5 Claims

1. A diamond sintered material comprising diamond grains, wherein

a content ratio of the diamond grains is more than or equal to 80 volume % and less than or equal to 99 volume % with respect to the diamond sintered material,

an average grain size of the diamond grains is more than or equal to 0.1 μm and less than or equal to 50 μm, and

a dislocation density of the diamond grains is more than or equal to 8.1×10¹³m⁻²and less than 1.0×10¹⁶m⁻².