发明公开
- 专利标题: SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREFOR
- 专利标题(中): 表面涂层切削工具及其制造方法
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申请号: EP17811821.2申请日: 2017-04-25
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公开(公告)号: EP3308886A1公开(公告)日: 2018-04-18
- 发明人: YOSHIMURA, Kouhei , IMAMURA, Shinya , KANAOKA, Hideaki , PASEUTH, Anongsack , ONO, Satoshi
- 申请人: Sumitomo Electric Hardmetal Corp.
- 申请人地址: 1-1, Koyakita 1-chome Itami-shi, Hyogo 664-0016 JP
- 专利权人: Sumitomo Electric Hardmetal Corp.
- 当前专利权人: Sumitomo Electric Hardmetal Corp.
- 当前专利权人地址: 1-1, Koyakita 1-chome Itami-shi, Hyogo 664-0016 JP
- 代理机构: Boult Wade Tennant
- 优先权: JP2016163628 20160824
- 国际公布: WO2018037625 20180301
- 主分类号: B23B27/14
- IPC分类号: B23B27/14 ; B23B51/00 ; B23C5/16 ; B23D77/00 ; B23F21/00 ; B23G5/06 ; C23C16/40
摘要:
A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an α-Al 2 O 3 layer. The α-Al 2 O 3 layer contains a plurality of α-Al 2 O 3 crystal grains and chlorine, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The α-Al 2 O 3 layer includes lower and upper layers, the lower layer is located closer to the base material than the upper layer is, and the upper layer is located opposite to the base material across the lower layer, in a thickness direction of the α-Al 2 O 3 layer. The lower layer has a thickness of 1.0 µm. The upper layer has a thickness of 0.5 µm or more. The chlorine in the lower layer has a concentration distribution in which an atomic concentration C Cl of the chlorine decreases in a direction away from the base material, in a thickness direction of the lower layer.
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