US 12,215,061 B2
Insert and cutting tool
Futoshi Isobe, Satsumasendai (JP); and Azusa Hagihara, Satsumasendai (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/622,714
Filed by KYOCERA CORPORATION, Kyoto (JP)
PCT Filed Jun. 24, 2020, PCT No. PCT/JP2020/024849
§ 371(c)(1), (2) Date Dec. 24, 2021,
PCT Pub. No. WO2020/262468, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-120063 (JP), filed on Jun. 27, 2019.
Prior Publication US 2022/0259109 A1, Aug. 18, 2022
Int. Cl. C04B 35/5831 (2006.01); B23B 27/16 (2006.01)
CPC C04B 35/5831 (2013.01) [B23B 27/1611 (2013.01); C04B 2235/386 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/762 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An insert, comprising:
a boron nitride sintered body comprising a first surface, a second surface, and a cutting edge located on at least a part of a ridge part of the first surface and the second surface,
the boron nitride sintered body comprising cubic boron nitride and compressed boron nitride,
wherein
in a transmission X-ray diffraction of a cross section of the boron nitride sintered body vertical to the first surface,
in a direction vertical to the first surface
X-ray intensity at a top of a 111 diffraction peak of the cubic boron nitride is IcBN(111)v, and X-ray intensity at a top of a 002 diffraction peak of the compressed boron nitride is IhBN(002)v, and
in a direction parallel to the first surface
X-ray intensity at a top of a 111 diffraction peak of the cubic boron nitride is IcBN(111)h, and X-ray intensity at a top of a 002 diffraction peak of the compressed boron nitride is IhBN(002)h,
a compressed boron nitride content value indicated by
(IhBN(002)v+IhBN(002)h)/(IcBN(111)v+IcBN(111)h) is larger than 0.002 and smaller than 0.01,
a cubic orientation value indicated by IcBN(111)v/(IcBN(111)v+IcBN(111)h) is larger than 0.5, and
a compressed boron nitride orientation value indicated by
IhBN(002)v/(IhBN(002)v+IhBN(002)h) is larger than the cubic orientation value.