Wear and Corrosion Resistance of CrYN Coating in Artificial Seawater

Abstract

In this study, CrYN coatings were prepared using multi-arc ion plating at various substrate bias voltages (−50 V, −100 V, −150 V, and −200 V). X-ray diffractometry and scanning electron microscopy were used to characterize the composition and microstructure of the coatings. An electrochemical workstation and a ball-on-disk tribometer were used to investigate their corrosion and friction behavior. The results show that grain refinement can be achieved through the addition of yttrium (Y) and that the surfaces of coatings prepared under different bias voltages have varying smoothness and compactness. It was shown that surfaces prepared under −100 V bias voltages were relatively smooth and dense in structure, corresponding to a Y content of 2.83 at.%; CrYN coatings at −100 V were shown to have the highest corrosion potential and a low self-corrosion current, equating to superior corrosion resistance. Additionally, the friction coefficients of deposited CrYN coatings under bias voltages of −100 V were less than 0.2. Therefore, the coatings under bias voltages of −100 V had the minimum wear rate due to its structure, corrosion resistance, and friction.

Effects of yttrium doping on high-temperature oxidation, friction, and wear properties of CrAlN films

“…Recent research has shown that surface treatment can introduce the right amount of reactive yttrium (Y) content into nitride hard films, thereby improving their hardness, adsorption capacity, and resistance to high-temperature oxidation. Additionally, rare earth elements possess a surface purification effect that facilitates the adsorption, deposition, and diffusion of atoms in coatings, reducing deposition times [6][7][8][9]. Moser et al [10,11] found that Y doping enhances the hardness and thermal stability of TiAlN films through solid solution strengthening.…”

Wear and Corrosion Performance of Ti-6Al-4V Alloy Arc-Coated TiN/CrN Nano-Multilayer Film

“…Cathodic arc deposition (CAD) is a PVD technique that has been used to deposit ceramic hard films onto metallic surfaces, with most of these coatings exhibiting excellent wear and corrosion resistance properties. For example, the application of nitride films (such as TiN, CrN, ZrN, CrYN, and TiAlN) on various metallic materials using CAD has been demonstrated to significantly strengthen their wear and corrosion resistance [14][15][16][17][18][19][20]. In previous studies [21][22][23][24], a dual-coating design comprising an electroless nickel plating interlayer and a ceramic hard coating on ductile iron showed good corrosion resistance.…”