CUTTING TOOL WITH CVD-COATING WITH LAYER OF κ-AlO TEXTURE {0 0 1} Russian patent published in 2018 - IPC C23C16/40 B23B27/14 

FIELD: tools.

SUBSTANCE: invention relates to a cutting tool with the obtained chemical vapor deposition (CVD) coating. Said cutting tool comprises a cemented carbide, or cermet, or ceramic substrate, or cBN and a coating that contains at least one layer κ-Al₂O₃ thickness 1–20 microns, in which the diffracted x-ray radiation χ-Canogram of intensity distribution along the axis χ scan angle from -80° up to 80° for reflection from the crystallographic plane (0 0 6) of said layer κ-Al₂O₃ has the largest diffraction intensity peak with center 0° and the full width at half maximum (FWHM) of < 25°.

EFFECT: cutting tool with a coating layer is provided κ-Al₂O₃, which has improved cutting properties during turning, milling and/or drilling, as well as improved resistance to peeling wear during turning and milling of steel.

14 cl, 7 dwg, 4 ex, 11 tbl