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公开(公告)号：US11534837B1
公开(公告)日：2022-12-27
申请号：US17633216
申请日：2021-06-14
摘要： A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1-xCyN1-y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 μm and not more than 20 μm.
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公开(公告)号：US11998993B2
公开(公告)日：2024-06-04
申请号：US17298966
申请日：2019-12-12
发明人： Susumu Okuno , Shinya Imamura , Yuki Rikiso , Yasuki Kido , Fumiyoshi Kobayashi
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.
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公开(公告)号：US11293095B2
公开(公告)日：2022-04-05
申请号：US17255220
申请日：2020-06-02
发明人： Yasuki Kido , Susumu Okuno , Fumiyoshi Kobayashi
摘要： A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.
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公开(公告)号：US11207736B2
公开(公告)日：2021-12-28
申请号：US15734270
申请日：2020-04-10
摘要： Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 μm, when PN1 atomic % represents an atomic ratio of the nitrogen in an interface between the intermediate layer and the alumina layer, and PN2 atomic % represents an atomic ratio of the nitrogen at a point A away from the interface by 1 μm on a side of the intermediate layer, a ratio PN1/PN2 of the PN1 to the PN2 being more than or equal to 1.03.
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公开(公告)号：US11292065B2
公开(公告)日：2022-04-05
申请号：US17255032
申请日：2020-06-02
发明人： Yasuki Kido , Susumu Okuno , Fumiyoshi Kobayashi
摘要： A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.
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公开(公告)号：US11273498B2
公开(公告)日：2022-03-15
申请号：US17259198
申请日：2020-06-04
摘要： A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 μm, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.
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公开(公告)号：US10967433B2
公开(公告)日：2021-04-06
申请号：US16981099
申请日：2019-12-12
发明人： Susumu Okuno , Shinya Imamura , Yuki Rikiso , Yasuki Kido , Fumiyoshi Kobayashi
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.
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公开(公告)号：US12109629B1
公开(公告)日：2024-10-08
申请号：US18681078
申请日：2023-07-13
CPC分类号： B23B27/148 , C23C16/34 , C23C16/36 , C23C16/403 , B23B2228/105
摘要： A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer, the hard particle layer is formed from a plurality of hard particles consisting of titanium, silicon, carbon, and nitrogen, the hard particle layer comprises a first region and a second region, a composition of the first region is Ti(1-Xb)SiXbCN, a composition of the second region is Ti(1-Xs)SiXsCN, the Xs and the Xb satisfy relationships of Xs-Xb≥0.01 and 0
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公开(公告)号：US11975391B2
公开(公告)日：2024-05-07
申请号：US18026595
申请日：2022-08-30
CPC分类号： B23B27/1611 , B23B27/14 , E21B10/46 , B23B2200/08 , B23B2224/36 , B23B2228/105
摘要： A cutting tool including a substrate and a coating film disposed on the substrate, wherein the cutting tool includes: a rake face, a flank face contiguous to the rake face; and a cutting edge region composed of a boundary part between the rake face and the flank face, wherein the coating film includes a TiSiCN layer, the TiSiCN layer has: a first TiSiCN layer positioned in the rake face; and a second TiSiCN layer positioned in the cutting edge region, the first TiSiCN layer has a composition of Ti(1-Xr)SiXrCN, the second TiSiCN layer has a composition of Ti(1-Xe)SiXeCN, and the Xr and the Xe each represent 0.010 or more and 0.100 or less, and satisfy a relationship of Xr−Xe≥0.003.
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公开(公告)号：US11813677B1
公开(公告)日：2023-11-14
申请号：US18026148
申请日：2022-08-30
CPC分类号： B23B27/14 , C04B35/58021 , B23B2228/10 , C04B2235/3856 , C04B2235/728 , C04B2235/762 , C04B2235/78
摘要： A cutting tool including a substrate and a coating film disposed on the substrate, wherein the cutting tool includes: a rake face; a flank face contiguous to the rake face; and a cutting edge region composed of a boundary part between the rake face and the flank face, wherein the coating film includes a TiSiCN layer, the TiSiCN layer has: a first TiSiCN layer positioned in the rake face; and a second TiSiCN layer positioned in the cutting edge region, the first TiSiCN layer has a composition of Ti(1-Xr)SiXrCN, the second TiSiCN layer has a composition of Ti(1-Xe)SiXeCN, and the Xr and the Xe each represent 0.010 or more and 0.100 or less, and satisfy a relationship of Xe-Xr≥0.003.
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