Coated tool
AssigneeKYOCERA Corporation
InventorHirotoshi Ito
Life of this patent
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Abstract
A coated tool includes a base and a coating film on the base. The coating film includes an Al2O3 layer, and a surface layer on the Al2O3 layer. The surface layer has a first erosion rate of 0.1 μm/min or less. The first erosion rate is obtained from measurement by causing a liquid A, in which 3 mass % of amorphous Al2O3 particles having a mean particle diameter of 1.1-1.3 μm is dispersed in purified water, to collide with the surface layer. The surface layer has a second erosion rate of 2.0 μm/min or more. The second erosion rate is obtained from measurement by causing a liquid B, in which 3 mass % of spherical Al2O3 particles having a mean particle diameter of 2.8-3.2 μm is dispersed in purified water, to collide with the surface layer.
Claims2
A coated tool, comprising:
- a base;
- and
- a coating film located on the base, the coating film comprising:
- an Al2O3 layer, and
- a surface layer located in a region from a first surface on a side away from the base in the Al2O3 layer to a second surface that is a surface of the coating film, wherein
- the surface layer has a first erosion rate of 0.1 μm/min or less that is obtained from measurement by causing a liquid A, in which 3 mass % of amorphous Al2O3 particles having a mean particle diameter of 1.1-1.3 μm is dispersed in purified water, to collide with the surface layer,
- the surface layer has a second erosion rate of 2.0 μm/min or more that is obtained from measurement by causing a liquid B, in which 3 mass % of spherical Al2O3 particles having a mean particle diameter of 2.8-3.2 μm is dispersed in purified water, to collide with the surface layer, and
- the surface layer comprises a TiCN layer, a TiN layer, a TiC layer, and a TiCN layer in this order from a side of the Al2O3 layer.
A cutting tool, comprising:
- a holder which has a length from a first end to a second end and comprises a pocket located on a side of the first end;
- and
- a coated tool being located in the pocket, wherein
- the coated tool comprises:
- a base, and
- a coating film located on the base, the coating film comprising:
- an Al2O3 layer, and
- a surface layer located in a region from a first surface on a side away from the base in the Al2O3 layer to a second surface that is a surface of the coating film,
- the surface layer has a first erosion rate of 0.1 μm/min or less that is obtained from measurement by causing a liquid A, in which 3 mass % of amorphous Al2O3 particles having a mean particle diameter of 1.1-1.3 μm is dispersed in purified water, to collide with the surface layer,
- the surface layer has a second erosion rate of 2.0 μm/min or more that is obtained from measurement by causing a liquid B, in which 3 mass % of spherical Al2O3 particles having a mean particle diameter of 2.8-3.2 μm is dispersed in purified water, to collide with the surface layer, and
- the surface layer comprises a TiCN layer, a TiN layer, a TiC layer and a TiCN layer in this order from a side of the Al2O3 layer.
Dependencies are inferred from the claim text.