Hard coating, workpiece coated by hard coating and coating method for coating workpiece by hard coating

摘要

Hard coatings mainly contain (Al, Cr) ₂ O ₃ blends and chromium with a content of at least 5 at%. The coating is deposited at a temperature of 900 ° C. or lower, preferably 500 ° C. or lower. Hard coatings are deposited by CVD and PVD methods.