C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 16/30 (2006.01) B23B 27/14 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01) C23C 28/04 (2006.01) C23C 30/00 (2006.01)
Patent
CA 2248692
A cutting tool includes a substrate (28) and a coating on the substrate (28). The coating includes a base adhesion layer (38) that is on at least a portion of the substrate (28). A first intermediate adhesion layer (40), which includes boron and a first element, that is on the base adhesion layer (38). A second intermediate adhesion layer (42), which includes boron, the first element, and nitrogen, that is on the first intermediate adhesion layer (40). An outer adhesion layer (44), which includes boron and nitrogen preferably in the form of cubic boron nitride, that is on the second intermediate adhesion layer (42). A wear coating scheme (34) wherein the innermost layer of the wear coating scheme (34) is on the outer adhesion layer (44).
Un outil de coupe comprend un substrat (28) et un revêtement recouvrant ledit substrat (28). Le revêtement comprend une couche (38) d'adhésion de base qui recouvre au moins une partie du substrat (28); une première couche d'adhésion intermédiaire (40), contenant du bore et un premier élément, qui recouvre la couche d'adhésion de base (38); une seconde couche d'adhésion intermédiaire (42), contenant du bore, le premier élément et de l'azote, qui recouvre la première couche d'adhésion intermédiaire (40); une couche d'adhésion externe (44), contenant du bore et de l'azote de préférence sous forme de nitrure de bore cubique, qui recouvre la seconde couche d'adhésion intermédiaire (42); une structure de revêtement d'usure (34), dont la couche la plus interne recouvre la couche d'adhésion externe (44).
Kennametal Inc.
Smart & Biggar
LandOfFree
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