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公开(公告)号：US20180281078A1
公开(公告)日：2018-10-04
申请号：US15765955
申请日：2016-09-29
Applicant: TUNGALOY CORPORATION
Inventor： Yusuke HIRANO , Shigeki TANAKA
Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including an alternating laminate structure in which two or more compound layers of each of two or three or more kinds, each kind having a different composition, are laminated in an alternating manner, wherein: the alternating laminate structure is constituted by: a compound layer containing a compound having a composition represented by formula (1) below: (TixMySiz)N (1) [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W and Al, x denotes an atomic ratio of Ti based on a total of Ti, an element denoted by M and Si, y denotes an atomic ratio of the element denoted by M based on a total of Ti, the element denoted by M and Si, z denotes an atomic ratio of Si based on a total of Ti, the element denoted by M and Si, x satisfies 0.20≤x≤0.50, y satisfies 0.20≤y≤0.50, z satisfies 0.03≤z≤0.30, and x, y and z satisfy x+y+z=1]; and a compound layer containing a compound having a composition represented by formula (2) below: (TiaMbSic)N (2) [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W and Al, a denotes an atomic ratio of Ti based on a total of Ti, an element denoted by M and Si, b denotes an atomic ratio of the element denoted by M based on a total of Ti, the element denoted by M and Si, c denotes an atomic ratio of Si based on a total of Ti, the element denoted by M and Si, a satisfies 0.20≤a≤0.49, b satisfies 0.21≤b≤0.50, c satisfies 0.04≤c≤0.30, and a, b and c satisfy a+b+c=1]; an absolute value of a difference between an amount of a specific metal element contained in a compound layer which constitutes the alternating laminate structure based on an amount of all the metal elements contained therein and an amount of the specific metal element contained in another compound layer which is adjacent to the compound layer and which constitutes the alternating laminate structure based on an amount of all the metal elements contained therein, is more than 0 atom % and less than 5 atom %; and an average thickness of each of the compound layers is from 1 nm or more to 50 nm or less, and an average thickness of the alternating laminate structure is from 1.0 μm or more to 15.0 μm or less.
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公开(公告)号：US20180193924A1
公开(公告)日：2018-07-12
申请号：US15857986
申请日：2017-12-29
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
CPC classification number: B23B27/146 , B23B27/148 , B23B2228/105 , C23C14/0641 , C23C14/0658 , C23C14/0664 , C23C14/325 , C23C28/044 , C23C28/42 , C23C28/44 , C23C30/005
Abstract: A coated cutting tool comprises a substrate and a coating layer and the coating layer comprises a first laminate structure and a second laminate structure and each of the first laminate structure and the second laminate structure is laminated in an alternating manner and the number of laminations is three or more and one compound layer and other compound layer of the compound layers of two kinds in the each of the first laminate structure and the second laminate structure has a specific composition and the first laminate structure and each of the second laminate structure satisfies a specific condition and an average thickness of each of the layers constituting the first laminate structure and the second laminate structure and an average thickness of the coating layer is respectively a specific one.
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公开(公告)号：US20220297198A1
公开(公告)日：2022-09-22
申请号：US17682146
申请日：2022-02-28
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
Abstract: A coated cutting tool comprising a substrate containing a cubic boron nitride-containing sintered body, and a coating layer formed on the substrate, wherein the coating layer comprises a lowermost layer and an alternating laminate structure in this order, the lowermost layer comprises (Al1-xCrx)N, an average thickness of the lowermost layer is 0.01 μm or more and 0.2 μm or less, the alternating laminate structure includes mutually different two kinds of compound layers of a first compound layer containing (Al1-y1Cry1)N and a second compound layer containing (Al1-y2Cry2)N alternately laminated repeatedly twice or more, an average thickness of the entire alternating laminate structure is 0.1 μm or more and 1.2 μm or less, an average thickness of the entire coating layer is 0.2 μm or more and 1.3 μm or less, and a compressive residual stress at the cubic crystal (111) plane is 3.0 GPa or less.
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Patent Agency Ranking
公开(公告)号：US20180281079A1
公开(公告)日：2018-10-04
申请号：US15933643
申请日：2018-03-23
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer comprising a first laminate structure and a second laminate structure, wherein: the first laminate structure has a laminate structure in which predetermined compound layers of two kinds, each having a different composition, are laminated in an alternating manner; the first laminate structure satisfies a predetermined condition; the second laminate structure has a laminate structure in which a first compound layer comprising a predetermined oxide and/or oxynitride and a second compound layer having a predetermined composition are laminated in an alternating manner; and an average thickness of each compound layer which constitutes the first laminate structure, an average thickness of each compound layer which constitutes the second laminate structure, and a thickness of the coating layer in its entirety each fall within a predetermined range.
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公开(公告)号：US20180281077A1
公开(公告)日：2018-10-04
申请号：US15765701
申请日：2016-09-29
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, the coating layer including at least one predetermined layer, wherein: the predetermined layer is a layer containing a compound having a composition represented by a formula below: (AlxTiyM1-x-y)N [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W and Si, x denotes an atomic ratio of the Al element based on a total of the Al element, the Ti element and a metal element denoted by M, y denotes an atomic ratio of the Ti element based on a total of the Al element, the Ti element and the metal element denoted by M, x satisfies 0.60≤x≤0.85, y satisfies 0≤y≤0.40, and x+y satisfies 0.60≤x+y≤1.00]; an average thickness of the predetermined layer is from 1.4 μm or more to 15 μm or less; and the predetermined layer has an upper region and a lower region which satisfy conditions (1), (2) and (3) below: condition (1): the upper region has an average thickness of from 0.5 μm or more to 2.5 μm or less ranging from an interface which is close to a surface of the coated cutting tool toward the substrate, the average thickness being less than an average thickness of the predetermined layer, and the lower region has an average thickness of from 0.5 μm or more to 2.5 μm or less ranging from an interface which is close to the substrate toward the surface of the coated cutting tool, the average thickness being less than the average thickness of the predetermined layer; (2) an atomic ratio of the Al element contained in the upper region is higher, by from 3 atom % or higher to 10 atom % or lower, than an atomic ratio of the Al element contained in the lower region; and (3) an average particle size in the upper region is greater than an average particle size in the lower region.
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公开(公告)号：US20180236563A1
公开(公告)日：2018-08-23
申请号：US15749726
申请日：2016-07-21
Applicant: TUNGALOY CORPORATION
Inventor： Yusuke HIRANO , Shigeki TANAKA
Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate is provided, the coating layer including an alternating laminate structure in which two or more compound layers of each of two or three or more kinds, each kind having a different composition, are laminated in an alternating manner, wherein: the alternating laminate structure is constituted by: a compound layer containing a compound having a composition represented by (TixM1-x)N [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al and Si, x denotes an atomic ratio of Ti based on a total of Ti and an element denoted by M, and x satisfies 0.57≤x≤0.91]; and a compound layer containing a compound having a composition represented by (TiyM1-y)N [wherein M denotes an element of at least one kind selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al and Si, y denotes an atomic ratio of Ti based on a total of Ti and an element denoted by M, and y satisfies 0.61≤x≤0.95]; an absolute value of a difference between an amount of a specific metal element contained in a compound layer which constitutes the alternating laminate structure relative to an amount of all the metal elements contained therein and an amount of the specific metal element contained in another compound layer which is adjacent to the compound layer and which constitutes the alternating laminate structure relative to an amount of all the metal elements contained therein, is more than 0 atom % and less than 5 atom %; and an average thickness of each of the compound layers is from 1 nm or more to 50 nm or less, and an average thickness of the alternating laminate structure is from 1.5 μm or more to 15.0 μm or less.
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公开(公告)号：US20180117680A1
公开(公告)日：2018-05-03
申请号：US15568948
申请日：2016-04-25
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
CPC classification number: B23B27/148 , B23B27/14 , B23B51/00 , B23B2224/08 , B23C5/16 , C23C14/0641 , C23C28/042 , C23C28/044 , C23C28/42
Abstract: A coated cutting tool includes a coating layer formed on a substrate. The coating layer includes an alternating laminate structure of two or more compound layers of each of two or more different compositions. One layer contains a compound having a composition (AlxM1-x)N, where atomic ratio x is 0.58 to 0.90; and another layer contains a compound having a composition (AlyM1-y)N, where atomic ratio y is 0.57 to 0.79. M is an element of at least one kind selected from Groups 4, 5, and 6 elements and Si. An absolute value of a difference between amounts of a specific metal element in the compound layers relative to amounts of the metal element respectively contained therein is between 0 and 5 atom %. An average thickness of each compound layer is from 1 to 50 nm. An average thickness of the alternating laminate structure is from 1.5 to 15 μm.
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公开(公告)号：US20180071831A1
公开(公告)日：2018-03-15
申请号：US15560440
申请日：2016-03-25
Applicant: TUNGALOY CORPORATION
Inventor： Shigeki TANAKA
CPC classification number: B23B27/148 , B23B51/00 , B23B2228/105 , B23C5/16 , B23C2228/10 , C23C14/024 , C23C14/0641 , C23C28/044 , C23C30/005
Abstract: A coated cutting tool is provided which allows for satisfactory machining over a long period of time, particularly in the machining of difficult-to-machine materials with low thermal conductivity. The coated cutting tool includes a substrate and a coating layer formed on a surface of the substrate, wherein: at least one layer of the coating layer comprises a predetermined layer containing a compound having a composition represented by the formula: (AlXTi1-X)N [wherein x denotes an atomic ratio of the Al element based on a total of the Al element and the Ti element, and x satisfies 0.60≦x≦0.85]; a value of an orientation index TC (311) of a cubic (311) plane of the predetermined layer is from 2.5 or more to 4.2 or less; and an average thickness of the predetermined layer is from 1.0 μm or more to 12.0 μm or less.
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