Invention Grant
- Patent Title: Hard coating film for cutting tools
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Application No.: US14915905Application Date: 2014-08-27
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Publication No.: US09855608B2Publication Date: 2018-01-02
- Inventor: Je-Hun Park , Seung-Su Ahn , Sung-Gu Lee , Seoun-Yong Ahn , Young Heum Kim
- Applicant: KORLOY INC.
- Applicant Address: KR Seoul
- Assignee: KORLOY INC.
- Current Assignee: KORLOY INC.
- Current Assignee Address: KR Seoul
- Agency: Revolution IP, PLLC
- Priority: KR10-2013-0107733 20130909
- International Application: PCT/KR2014/007962 WO 20140827
- International Announcement: WO2015/034203 WO 20150312
- Main IPC: C23C28/04
- IPC: C23C28/04 ; B23B27/14 ; C23C14/06 ; C23C28/00

Abstract:
Disclosed is a hard coating film formed on a hard base material such as cemented carbide. The hard coating film has a nanoscale multilayered structure to have improved oxidation resistance and wear resistance. The hard coating film is a hard coating film formed on the base material. The first layer is composed of a TiAl nitride having a composition of Ti1-aAla (0.3≦a≦0.7), and the second layer has a nanoscale multilayered structure or a structure in which the nanoscale multilayered structure is repeatedly laminated at least two times, the nanoscale multilayered structure including a thin layer A composed of an AlTiSi nitride, a thin layer B, a thin layer C composed of a AlCr nitride, and a thin layer D having thicknesses of 3 nm to 20 nm. The thin film B and the thin film D are composed of a TiAl nitride.
Public/Granted literature
- US20160193662A1 HARD COATING FILM FOR CUTTING TOOLS Public/Granted day:2016-07-07
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