公开(公告)号：WO2015114049A1

公开(公告)日：2015-08-06

申请号：PCT/EP2015/051812

申请日：2015-01-29

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： RUPPI, Sakari ,  ENGSTRÖM, Hindrik ,  LAURIDSEN, Jonas ,  ALM, Oscar ,  MATSSON, Peter ,  LARSSON, Tommy ,  LINDAHL, Erik ,  ENGQVIST, Jan ,  STIENS, Dirk

IPC: C23C16/40

CPC classification number: B23B27/148 ,  B23B2222/28 ,  B23B2224/04 ,  B23B2228/04 ,  B23B2228/08 ,  C23C16/403 ,  C23C16/45557 ,  C30B25/18 ,  C30B29/20 ,  C30B29/68

Abstract: A coated cutting tool insert consisting of a substrate comprising cemented carbide, cermet, ceramics, steel or cubic boron nitride having deposited thereon a coating of a total thickness of a maximum of 60 μm comprising one or more layers comprising a wear resistant layer of α-Al 2 O 3 of a thickness of 1 to 45 μm deposited by chemical vapour deposition (CVD), wherein when observed in a SEM microphotograph of a cross section of the α-Al 2 O 3 layer, the α-Al 2 O 3 layer comprises at least two portions, a first thickness portion and a second thickness portion immediately on top of the first thickness portion, the first thickness portion having an essentially columnar α-Al 2 O 3 grain structure, and at the transition from the first thickness portion to the second thickness portion the grain boundaries of at least 1 out of 25 neighbouring grains, preferably of at least 5 out of 25 neighbouring grains, more preferable of at least 15 out of 25 neighbouring grains, of the α-Al 2 O 3 grains undergo a directional change into a direction that is essentially perpendicular to the grain boundaries in the first thickness portion, wherein essentially perpendicular includes a directional change of 90 ± 45 degrees, preferably 90 ± 30 degrees.

Abstract translation: 由包括硬质合金，金属陶瓷，陶瓷，钢或立方氮化硼的基底组成的涂覆的切削工具插入件，其上沉积有总厚度最大为60μm的涂层，包括一层或多层，其包含耐磨层， 通过化学气相沉积（CVD）沉积的厚度为1至45μm的Al 2 O 3，其中当在α-Al 2 O 3层的横截面的SEM显微照片中观察时，α-Al 2 O 3层包含至少两个部分，第一厚度 部分和第二厚度部分紧接在第一厚度部分的顶部上，第一厚度部分具有基本上柱状的α-Al 2 O 3晶粒结构，并且在从第一厚度部分到第二厚度部分的过渡处，晶界至少为1 在25个相邻晶粒中，优选25个相邻晶粒中的至少5个，更优选α-Al 2 O 3晶粒中25个相邻晶粒中的至少15个经历a 方向改变成基本上垂直于第一厚度部分中的晶界的方向，其中基本垂直的方向包括90±45度，优选90±30度的方向变化。

公开(公告)号：EP3099835A1

公开(公告)日：2016-12-07

申请号：EP15701791.4

申请日：2015-01-29

Applicant: Sandvik Intellectual Property AB

Inventor： RUPPI, Sakari ,  ENGSTRÖM, Hindrik ,  LAURIDSEN, Jonas ,  ALM, Oscar ,  MATSSON, Peter ,  LARSSON, Tommy ,  LINDAHL, Erik ,  ENGQVIST, Jan ,  STIENS, Dirk

IPC: C23C16/40

CPC classification number: B23B27/148 ,  B23B2222/28 ,  B23B2224/04 ,  B23B2228/04 ,  B23B2228/08 ,  C23C16/403 ,  C23C16/45557 ,  C30B25/18 ,  C30B29/20 ,  C30B29/68

Abstract: A coated cutting tool insert consisting of a substrate comprising cemented carbide, cermet, ceramics, steel or cubic boron nitride having deposited thereon a coating of a total thickness of a maximum of 60 μm comprising one or more layers comprising a wear resistant layer of α-Al
2 O
3 of a thickness of 1 to 45 μm deposited by chemical vapour deposition (CVD), wherein when observed in a SEM microphotograph of a cross section of the α-Al
2 O
3 layer, the α-Al
2 O
3 layer comprises at least two portions, a first thickness portion and a second thickness portion immediately on top of the first thickness portion, the first thickness portion having an essentially columnar α-Al
2 O
3 grain structure, and at the transition from the first thickness portion to the second thickness portion the grain boundaries of at least 1 out of 25 neighbouring grains, preferably of at least 5 out of 25 neighbouring grains, more preferable of at least 15 out of 25 neighbouring grains, of the α-Al
2 O
3 grains undergo a directional change into a direction that is essentially perpendicular to the grain boundaries in the first thickness portion, wherein essentially perpendicular includes a directional change of 90 ± 45 degrees, preferably 90 ± 30 degrees.

Abstract translation: 涂覆的切削工具刀片包括在其上沉积有总厚度为60μm的涂层的硬质合金，金属陶瓷，陶瓷，钢或立方氮化硼的基底，包括一层或多层具有α-Al 2 O 3的耐磨层 通过化学气相沉积（CVD）沉积的厚度为1至45μm。 α-Al 2 O 3层包括至少两个部分，第一厚度部分和第二厚度部分紧接在第一厚度部分的顶部上。 第一厚度部分具有基本上为柱状的α-Al 2 O 3晶粒结构，并且在从第一厚度部分到第二厚度部分的过渡处，α-Al 2 O 3晶粒的25个相邻晶粒中的至少1个的晶界经历方向变化 进入与第一厚度部分中的晶界基本上垂直的方向（90±45度）。