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US 12,296,393 B2Granted
Aluminum oxynitride coatings with enhanced crystallinity
AssigneeKennametal Inc.
InventorZhenyu Liu
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Abstract
In one aspect, a coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating including a refractory layer comprising AlON, the AlON layer exhibiting a peak in a range of 33-35° 2θ in an XRD, wherein the peak has a FWHM of 0.1°-0.7° 2θ. In some embodiments, the AlON layer can exhibit a ribbon-like crystallites, needle-like crystallites, or rice-like crystallites and associated surface texture.
Claims13
A coated cutting tool comprising:
- a substrate;
- and
- a coating adhered to the substrate, the coating including a refractory layer comprising aluminum oxynitride (AlON), the AlON layer exhibiting a peak in a range of 33°-35° 2θ in an X-ray diffractogram (XRD), wherein
- the peak has a full width half maximum (FWHM) of 0.1°-0.7° 2θ, and wherein the AlON layer has a nitrogen to oxygen ratio (N/O) of 1 or less.
1 more element
Dependencies are inferred from the claim text.