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Tribological and Mechanical Properties of Multicomponent CrVTiNbZr(N) Coatings

机译：多组分CRVTINBZR（N）涂层的摩擦学和力学性能

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摘要

Multi-element material coating systems have received much attention for improving the mechanical performance in industry. However, they are still focused on ternary systems and seldom beyond quaternary ones. High entropy alloy (HEA) bulk material and thin films are systems that are each comprised of at least five principal metal elements in equally matched proportions, and some of them are found possessing much higher strength than traditional alloys. In this study, CrVTiNbZr high entropy alloy and nitrogen contained CrVTiNbZr(N) nitride coatings were synthesized using high ionization cathodic-arc deposition. A chromium-vanadium alloy target, a titanium-niobium alloy target and a pure zirconium target were used for the deposition. By controlling the nitrogen content and cathode current, the CrNbTiVZr(N) coating with gradient or multilayered composition control possessed different microstructures and mechanical properties. The effect of the nitrogen content on the chemical composition, microstructure and mechanical properties of the CrVTiNbZr(N) coatings was investigated. Compact columnar microstructure was obtained for the synthesized CrVTiNbZr(N) coatings. The CrVTiNbZrN coating (HEAN-N165), which was deposited with nitrogen flow rate of 165 standard cubic centimeters per minute (sccm), exhibited slightly blurred columnar and multilayered structures containing CrVN, TiNbN and ZrN. The design of multilayered CrVTiNbZrN coatings showed good adhesion strength. Improvement of adhesion strength was obtained with composition-gradient interlayers. The CrVTiNbZrN coating with nitrogen content higher than 50 at.% possessed the highest hardness (25.2 GPa) and the resistance to plastic deformation H3/E*2 (0.2 GPa) value, and therefore the lowest wear rate was obtained because of high abrasion wear resistance.
机译：多元素材料涂料系统得到了很多关注，可以提高行业的机械性能。但是，它们仍然专注于三元系统，很少超过第四纪。高熵合金（HEA）散装材料和薄膜是各自包括至少五个主要金属元素的系统，其一些具有比传统合金具有更高的强度。在该研究中，使用高电离阴极 - 电弧沉积合成CRVTINBZR高熵合金和含有CRVTINBZR（N）氮化吡啶涂层。铬 - 钒合金靶标，钛 - 铌合金靶和纯锆靶用于沉积。通过控制氮含量和阴极电流，具有梯度或多层组合物对照的CRNBTIVZR（N）涂层具有不同的微观结构和机械性能。研究了氮含量对CRVTINBZR（N）涂层的化学成分，微观结构和力学性能的影响。为合成的CRVTINBZR（N）涂层得到紧凑的柱状微观结构。用氮流量沉积的CRVTINBZRN涂层（HEAN-N165），其含有165立方厘米/分钟（SCCM），略微模糊的柱状和含有CRVN，TINBN和ZrN的多层结构。多层CRVTINBZRN涂层的设计表现出良好的粘合强度。用组合梯度夹层获得粘合强度的提高。 CRVTINBZRN涂层具有高于50.％的氮含量。％具有最高硬度（25.2GPa）和对塑性变形H3 / E * 2（0.2GPa）值的抗性，因此由于高磨损磨损而获得最低磨损率反抗。

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