Surface-coated cutting tool and method of manufacturing the same
AssigneeSumitomo Electric Hardmetal Corp.
InventorsHideaki Kanaoka, Shinya Imamura, Anongsack Paseuth, Takanori Detani
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Abstract
A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an α-Al2O3 layer. The α-Al2O3 layer contains α-Al2O3 crystal grains and sulfur, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The sulfur has a concentration distribution in which a concentration of the sulfur decreases in a direction away from a base-material-side surface of the α-Al2O3 layer, in a thickness direction of the α-Al2O3 layer.
Claims10
A surface-coated cutting tool comprising a base material and a coating formed on the base material,
- the coating including an α-Al2O3 layer,
- the α-Al2O3 layer containing a plurality of α-Al2O3 crystal grains and sulfur, and having a TC(006) of more than 5 in texture coefficient TC(hkl), and
- the sulfur having a concentration distribution in which a concentration of the sulfur decreases in a direction away from a base-material-side surface of the α-Al2O3 layer, in a thickness direction of the α-Al2O3 layer.
Dependencies are inferred from the claim text.