High-temperature self-lubricating wear-resistant nano-composite oxynitride coating as well as preparation method and application thereof

The AlCrVSiON nanocomposite oxynitride coating prepared by arc ion plating technology solves the contradiction between the self-lubricating performance and oxidation resistance of V-containing coatings at high temperatures, achieves the effect of low friction coefficient and low wear rate at high temperatures, and improves the service life of the tool.

CN120350346APending Publication Date: 2025-07-22ANHUI UNIVERSITY OF TECHNOLOGY +1
0 Cites 1 Cited by

Patent Information

Application Number
CN202510546909.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2025-07-22

AI Technical Summary

Technical Problem

V-containing coatings form self-lubricating phases at high temperatures or frictions, which improve friction performance but reduce oxidation resistance. The rapid external diffusion of V elements leads to reduced mechanical properties and high wear rate, which limits its application in the field of high temperatures.

Method used

Arc ion plating technology is used to prepare high-temperature self-lubricated wear-resistant nanocomposite oxygen nitride coatings. By adjusting the partial pressure of oxygen elements, a nano-multilayer structure with alternating oxygen-rich layers and nitrogen-rich layers is formed. Combined with AlCrVSiON functional layer and CrN base layer, the oxidation resistance and wear resistance of the coating are improved.

Benefits of technology

It realizes a coating with both self-lubricating performance and wear resistance at high temperatures, reducing the friction coefficient and wear rate, and extending the service life of the tool.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the technical field of cutter coatings and surface coatings, in particular to a high-temperature self-lubricating wear-resistant nano-composite oxynitride coating and a preparation method and application thereof.The coating is prepared through the multi-arc ion plating technology, and the preparation method comprises the steps that Ar < + > ion bombardment, Cr < + > ion implantation and CrN transition layer deposition are sequentially conducted on a base body; and finally, by changing the partial pressure of oxygen in the mixed gas in the chamber, the AlCrVSiON functional coatings with different oxygen contents are deposited. According to the invention, V is added into the AlCrSiN coating, so that the coating generates a Magneli phase under high temperature or friction to form a self-lubricating layer, the friction coefficient is effectively reduced, and the friction performance is improved. Meanwhile, due to the addition of the element O, the coating has good high-temperature oxidation resistance and stable high-temperature mechanical property, and the defects that the mechanical property is reduced and the wear rate is increased due to coating oxidation at high temperature are overcome, so that the coating can be applied to the field of high-temperature cutting.
Need to check novelty before this filing date? Find Prior Art