Patent ID: 11931811
Assignee: TUNGALOY CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 18:
19. The coated cutting tool according to claim 10, wherein the coated cutting tool comprises a rake face, a flank, and a cross ridgeline part between the rake face and the flank, and
the coating layer comprises a crystal of a cubic system, and an absolute value |σ11−σ22| of a difference between a compressive residual stress σ11 at a cubic crystal (111) plane of the coating layer in a direction in parallel with the cross ridgeline part and a compressive residual stress σ22 at a cubic crystal (111) plane of the coating layer in a direction perpendicular to the cross ridgeline part is less than 0.5 GPa.