Diamond coated tool

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 16/27 (2006.01) B23B 27/14 (2006.01) B23B 27/20 (2006.01) B23B 51/00 (2006.01) B23C 5/16 (2006.01)

Patent

CA 2747216

The present invention provides a diamond coated tool (10) which is resistant to exfoliation at an interface between a base material (1) and a diamond layer (3). The diamond coated tool (10) of the present invention is a diamond coated tool (10) including a base material (1) and a diamond layer (3) coating a surface of the base material (1), and characterized in that the surface of the base material (1) has an arithmetic average roughness Ra of not less than 0.1 µm and not more than 10 µm and an average length of roughness profile elements RSm of not less than 1 µm and not more than 100 µm, and that the diamond layer (3) has a plurality of cavities (2) extending from a portion bordering on the base material (1) in a crystal growth direction.

L'invention concerne un outil à revêtement de diamant (10) dans lequel les décollements au niveau de l'interface entre un matériau de base (1) et une couche de diamant (3) sont empêchés. L'outil à revêtement de diamant (10) est caractéristique en ce que: c'est un outil qui comprend un matériau de base (1), et une couche de diamant (3) qui revêt la surface du matériau de base (1); la surface du matériau de base (1) a une rugosité moyenne arithmétique (Ra) supérieure ou égale à 0,1µm et inférieure ou égale à 10µm, et une longueur (RSm) moyenne d'élément de courbe de rugosité supérieure ou égale à 1µm et inférieure ou égale à 100µm; et la couche de diamant (3) possède une pluralité d'intervalles (2) s'élevant à partir de la partie de contact avec le matériau de base (1) dans la direction de croissance des cristaux.

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