Cutting tool
AssigneeSumitomo Electric Hardmetal Corp.
InventorsNaoki Watanobe, Masashi Harada, Takashi Harada, Satoru Kukino
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Abstract
A cutting tool according to the present disclosure has a rake face, a flank face, and a cutting edge. The cutting edge is located between the rake face and the flank face. The cutting tool includes a substrate composed of a cubic boron nitride sintered material, and an oxide layer that covers the substrate and that constitutes at least part or whole of the rake face, the flank face, and the cutting edge. The oxide layer includes at least one element selected from a group consisting of titanium, aluminum, zirconium, and cobalt. A thickness of the oxide layer is 2 μm or less.
Claims11
A cutting tool comprising:
- a rake face;
- a flank face;
- and
- a cutting edge located between the rake face and the flank face, wherein
- the cutting tool includes a substrate composed of a cubic boron nitride sintered material, and an oxide layer that covers the substrate and that constitutes part or whole of at least one of the rake face, the flank face, and the cutting edge,
- the oxide layer consists of one or more oxides that include at least one element selected from a group consisting of titanium, aluminum, zirconium and cobalt,
- a thickness of the oxide layer is 30 nm or more and 300 nm or less,
- the substrate includes cubic boron nitride grains and a binder in contact with the cubic boron nitride grains,
- the oxide layer is contiguous to the binder, and
- the oxide layer includes the same element as an element included in the binder.
A cutting tool comprising:
- a rake face;
- a flank face;
- and
- a cutting edge located between the rake face and the flank face, wherein
- the cutting tool includes a substrate composed of a cubic boron nitride sintered material, and an oxide layer that covers the substrate and that constitutes only part or whole of a surface of at least one of the rake face, the flank face, and the cutting edge,
- the oxide layer includes at least one element selected from a group consisting of titanium, aluminum, zirconium and cobalt,
- a thickness of the oxide layer is 2 μm or less,
- the substrate includes cubic boron nitride grains and a binder in contact with the cubic boron nitride grains,
- the oxide layer is contiguous to the binder, and
- the oxide layer includes the same element as an element included in the binder.
Dependencies are inferred from the claim text.