Amorphous carbon coated tools and method of producing the same

摘要

Amorphous carbon coated tools having excellent wear-resistant and anti-adhesion features and methods of producing the same are provided. Amorphous carbon coated tools comprising substrates formed from one of a cubic boron nitride sintered body, a diamond sintered body, a silicon nitride sintered body, or an aluminum oxide-titanium carbide sintered body, and amorphous carbon films thereon to make the cutting edges of the tools. The amorphous carbon films contain hydrogen at 5 atomic percent or below and have a maximum thickness of 0.05 mu m to 0.5 mu m on the cutting edges. The amorphous carbon films are most suitable for applications to cutting tools exemplified by cutters, knives, and slitters, and to indexable inserts used for example in turning tools including drills, endmills, and reamers, and milling cutters.