Influence of nitride and carbide coatings on the wear resistance of helical drill bits Nazarenko, P V; Makarkin, S N 42 ENGINEERING; 36 MATERIALS SCIENCE; CHROMIUM NITRIDES; DEPOSITION; DRILL BITS; PROTECTIVE COATINGS; TITANIUM CARBIDES; VANADIUM NITRIDES; ZIRCONIUM NITRIDES; DRILLS; OPTIMIZATION; WEAR; CARBIDES; CARBON COMPOUNDS; CHROMIUM COMPOUNDS; COATINGS; DRILLING EQUIPMENT; EQUIPMENT; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; 420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989); 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication The optimized deposition of TiC, VN, ZrN, and CrN coatings on helical drill bits using high-energy vacuum-plasma accelerators is described. It is shown that these coatings are successful in increasing the wear resistance of helical drill bits when the latter are used at cutting velocities of 15-40 m/min under axial loads of 300-500 N. Kievskii Institut Inzhenerov Grazhdanskoi Aviatsii, Kiev (Ukrainian SSR) USSR 1988-01-01 Russian Journal Article Journal Name: Izv. Akad. Nauk Turkm. SSR, Ser. Fiz.-Tekh., Khim. Geol. Nauk; (USSR); Journal Volume: 5 Medium: X; Size: Pages: 42-45 https://doi.org/ [] 5 Journal ID: CODEN: ITUFA IAA; EDB-89-063913 2010-12-30 6288028