EP 2031090 B1 20110817 - Hard covering film for cutting tool
Title (en)
Hard covering film for cutting tool
Title (de)
Hartbeschichtung für Schneidwerkzeug
Title (fr)
Film de couverture en dur pour outil de découpe
Publication
Application
Priority
JP 2007225987 A 20070831
Abstract (en)
[origin: EP2031090A2] It is an object of the present invention to provide a hard covering film for a cutting tool which can improve the wear resistance beyond that of a conventional AlCrN film. According to the present invention, there is provided a hard covering film for a cutting tool formed on a cutting tool substrate, characterized in that: the hard covering film comprises a first multi-layer covering film layer formed by alternatingly layering two or more layers each of a first covering film layer and a second covering film layer; the first covering film layers have metal and semi-metal components that are expressed (in terms of at%) by Al( 100-x-y-z )Cr (x) V (y) B (z) (where 20 ‰¤ x ‰¤ 40, 2 ‰¤ y ‰¤ 15, and 5 ‰¤ z ‰¤ 15), have N as a non-metallic element, and have unavoidable impurities; the second covering film layers have metal and semi-metal components that are expressed (in terms of at%) by Al (100-u-v-w) Cr (u) V (v) B (w) (where 20 ‰¤ u ‰¤ 40, 0 ‰¤ v ‰¤ 5, 0 ‰¤ w ‰¤ 5), have N as a non-metallic element, and have unavoidable impurities; the relationship between y and v such that y ‰¥ v is satisfied; and the relationship between z and w such that z - 5 ‰¥ w is satisfied.
IPC 8 full level
C23C 28/00 (2006.01); B23B 27/14 (2006.01); C23C 28/04 (2006.01); C23C 30/00 (2006.01)
CPC (source: EP)
C23C 28/044 (2013.01); C23C 28/42 (2013.01); C23C 30/005 (2013.01)
Designated contracting state (EPC)
CH DE IT LI
DOCDB simple family (publication)
EP 2031090 A2 20090304; EP 2031090 A3 20100804; EP 2031090 B1 20110817; CN 101376178 A 20090304; CN 101376178 B 20120905; JP 2009056549 A 20090319; JP 4413958 B2 20100210
DOCDB simple family (application)
EP 08014911 A 20080822; CN 200810212695 A 20080829; JP 2007225987 A 20070831