• Patent Title: Covering member and method for manufacturing the same
  • Application No.: US16971688
    Application Date: 2019-02-15
  • Publication No.: US11976350B2
    Publication Date: 2024-05-07
  • Inventor: Shuho KosekiDaiki Shinno
  • Applicant: Proterial, Ltd.
  • Applicant Address: JP Tokyo
  • Assignee: Proterial, Ltd.
  • Current Assignee: Proterial, Ltd.
  • Current Assignee Address: JP Tokyo
  • Agency: JCIPRNET
  • Priority: JP 18032834 2018.02.27
  • International Application: PCT/JP2019/005573 2019.02.15
  • International Announcement: WO2019/167674A 2019.09.06
  • Date entered country: 2020-08-21
  • Main IPC: C23C14/06
  • IPC: C23C14/06 C23C14/58
Covering member and method for manufacturing the same
Abstract:
A covering member has a hard film on the surface of a base material, wherein the hard film comprises a layer A selected from a nitride, a carbonitride, an oxynitride, and an oxycarbonitride of Cr or CrM; a metal layer which is formed on the outer surface side of the A layer and includes Cr, Ti, or W; and a layer B which is formed on the outer surface side of the metal layer and selected from a nitride, a carbonitride, an oxynitride, and an oxycarbonitride of Cr or CrM, and wherein M is one or two or more from a Group 4 metal, a Group 5 metal, a Group 6 metal of the periodic table, Al, Si, and B, and strain is introduced in the outer surface side of the metal layer.
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