公开(公告)号：US11998993B2

公开(公告)日：2024-06-04

申请号：US17298966

申请日：2019-12-12

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Susumu Okuno ,  Shinya Imamura ,  Yuki Rikiso ,  Yasuki Kido ,  Fumiyoshi Kobayashi

IPC分类号： B32B27/14 ,  B23B27/14 ,  B23C5/16 ,  C23C16/34 ,  C23C16/36 ,  C23C16/40 ,  C23C28/04

CPC分类号： B23B27/148 ,  B23C5/16 ,  C23C16/34 ,  C23C16/36 ,  C23C16/403 ,  C23C28/044 ,  B23B2224/04 ,  B23B2224/32 ,  B23B2224/36

摘要： A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an α-alumina layer provided on the substrate, the α-alumina layer including crystal grains of α-alumina, the α-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having a (110) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the α-alumina layer having a thickness of 3 μm or more and 20 μm or less.

公开(公告)号：US11014165B2

公开(公告)日：2021-05-25

申请号：US17042951

申请日：2019-11-01

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Yuki Rikiso ,  Susumu Okuno ,  Anongsack Paseuth ,  Shinya Imamura

IPC分类号： B23B27/14 ,  B23C5/16 ,  C23C16/30 ,  C23C16/40 ,  C23C16/32 ,  C23C28/00 ,  C23C16/34

摘要： A cutting tool includes a substrate and a coating that covers the substrate, the coating includes an α-Al2O3 layer, and the α-Al2O3 layer has an orientation index TC(0 0 12) of a (0 0 12) plane not smaller than 4 and not larger than 8.5, an orientation index TC(2 0 14) of a (2 0 14) plane not smaller than 0.5 and not larger than 3, and a total of the orientation index TC(0 0 12) and the orientation index TC(2 0 14) not larger than 9.

公开(公告)号：US10967433B2

公开(公告)日：2021-04-06

申请号：US16981099

申请日：2019-12-12

申请人： SUMITOMO ELECTRIC HARDMETAL CORP.

发明人： Susumu Okuno ,  Shinya Imamura ,  Yuki Rikiso ,  Yasuki Kido ,  Fumiyoshi Kobayashi

IPC分类号： B24D3/02 ,  B23B27/14 ,  B23C5/16 ,  B24D3/00 ,  B24D11/00 ,  B24D18/00 ,  C09K3/14

摘要： A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an α-alumina layer, the α-alumina layer including crystal grains of α-alumina, the α-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of α-alumina having (006) plane with a normal thereto having a direction within ±15° with respect to a direction of a normal to the second interface, the lower portion being occupied in area at a ratio of 5% or more and less than 50% by crystal grains of α-alumina having (012) plane, (104) plane, (110) plane, (113) plane, (116) plane, (300) plane, (214) plane and (006) plane each with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface.