Surface-coated cutting tool and method of manufacturing the same

A surface-coated cutting tool comprising a base material and a coating formed on the base material,

• the coating including an α-Al2O3 layer comprising an α-Al2O3 nucleation phase and having a base-material-side surface and an opposite surface opposite to the base-material-side surface,
• 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 the base-material-side surface of the α-Al2O3 layer, in a thickness direction of the α-Al2O3 layer, wherein
• the concentration distribution satisfies a relation:
• an S content at point X>an S content at point Y, wherein point X is a point directly above and contacting an interface between the α-Al2O3 layer and the base material or is a point directly above and contacting an interface between the α-Al2O3 layer and an adjacent layer, and point Y is a point immediately below the opposite surface of the α-Al2O3 layer,
• the S content at point X shows a maximum value in the thickness direction of the α-Al2O3 layer, and
• the adjacent layer is a layer adjacent to the α-Al2O3 layer and is located on the same side as the base material, in the thickness direction of the α-Al2O3 layer.