Effect of Addition of Mo or V on the Structure and Cutting Performance of AlCrN-Based Coatings

Abstract

This study focuses on a comparative analysis of AlCrXN (X = Mo or V) coatings with the reference AlCrN coating via arc ion plating technique (AIP). The XRD and XPS results showed that the AlCrXN coatings were mainly composed of fcc-(Cr,Al)N solid solution phases. Both the AlCrMoN and AlCrVN coatings exhibited much higher hardness and adhesive strength than the AlCrN coating. The addition of Mo or V decreased the coefficient of friction (COF) and wear rate, which was due to the formation of lubricant oxides containing Mo or V on the coating surfaces. The cutting results showed that abrasive wear, adhesive wear, and oxidation wear were the main wear mechanisms for the coated tools at the cutting speeds of 60 m/min and 94 m/min. The addition of Mo or V dramatically improved the cutting performance of AlCrXN-coated tools by increasing the anti-wear ability due to the high hardness and the formed lubricant VOx or MoOx films.

Quo Vadis: AlCr-Based Coatings in Industrial Applications

“…(AlCrV)N coatings were deposited by arc using Al 70 Cr 30 and Cr 70 V 30 cathodes [103]. The (AlCrV)N coating had a higher hardness and a lower friction value and wear rate than the (Al 70 Cr 30 )N coating.…”

“…The coating properties of (AlCrX)N can be combined with AlTiN [155,156]. There are some coating systems that contain V in a nitride coating to tailor tribological properties (formation of lubricant oxides), such as (TiV)N [157], (CrV)N and (CrMo)N [103]. The combination with (TiSi)N is focused on high hardness and oxidation stability [158].…”

Effect of Boron and Vanadium Addition on Friction-Wear Properties of the Coating AlCrN for Special Applications

“…Many studies have looked into AlCrVN coatings to increase the friction-wear properties of materials [ 2 , 10 , 11 ]. Because of the formation of V 2 O 5 oxide during tribological testing at extreme temperatures, the AlCrVN coatings have a low friction coefficient (0.2–0.3) and good wear resistance at high temperatures (700 °C).…”

“…Because of the formation of V 2 O 5 oxide during tribological testing at extreme temperatures, the AlCrVN coatings have a low friction coefficient (0.2–0.3) and good wear resistance at high temperatures (700 °C). The AlCrVN coating greatly increased cutting tool performance while also boosting anti-wear ability due to the high hardness and produced lubricating V 2 O 5 coatings [ 11 , 12 ]. The findings indicate that AlCrVN hard coatings have the potential to improve the wear resistance of cutting tools, forming, mechanical, and weapon parts [ 10 , 11 ].…”

“…The AlCrVN coating greatly increased cutting tool performance while also boosting anti-wear ability due to the high hardness and produced lubricating V 2 O 5 coatings [ 11 , 12 ]. The findings indicate that AlCrVN hard coatings have the potential to improve the wear resistance of cutting tools, forming, mechanical, and weapon parts [ 10 , 11 ].…”