Method and device for depositing sand erosion-resisting nano composite film on blade of helicopter

Abstract

The invention discloses a method and device for repairing a TiN/DLC/TiN nano composite film which is excellent in bonding force and high in sand erosion resistance on the surface of a blade of an engine. The method for preparing the TiN/DLC/TiN nano composite film comprises the steps that a metal 'pinning layer' which can improve the bonding force of a film base is injected into the surface of the blade through a metal vapor vacuum arc (MEVVA) ion source method; deposition is conducted on the metal 'pinning layer' through a magnetic filtered cathodic vacuum arc (FCVA) deposition method, so that a first metal/metal oxide film transition layer used for releasing the internal stress is obtained; deposition is conducted on the first transition layer through the magnetic FCVA deposition method, so that a second soft DLC layer is obtained; deposition is conducted on the second soft layer, so that a third superhard TiN film is obtained; and the second layer and the third layer are prepared by repeatedly conducting the process till the overall thickness of the TiN/DLC/TiN nano composite film is 10-30 micrometers. By the adoption of the method and device, the TiN/DLC/TiN nano composite film is deposited on the blade of the engine, so that the blade of the engine is well protected, and the situation that the blade of the engine is damaged due to sand erosion is prevented.

Description

technical field [0001] The invention relates to the technical field of surface modification of ray beam materials, in particular to a method and equipment for depositing a TiN / DLC / TiN nanocomposite film resistant to sand and dust erosion on helicopter blades. Background technique [0002] As we all know, helicopters are characterized by good maneuverability and rarely rely on good-quality take-off and landing sites and cement runways. In most cases, the take-off and landing sites used are simple sites, or even temporary soil, sand or grass. The air contains more or less sand, dust and other particles, especially in the central and western regions of my country where the natural conditions are deteriorating, and the impact of sand and dust on aircraft and helicopters is more serious. Airplanes usually fly at higher altitudes, and there is less sand and dust in the air, which has little impact on the aircraft. However, for helicopters, its maneuverability is good, and there a...

AI Technical Summary

Problems solved by technology

However, TiN has a fatal disadvantage that its film friction coefficient is relatively high, and its effect is relatively limited when it comes to improving the wear resistance of the workpiece. In most cases, the erosion of sand and dust on the surface of helicopter blades is caused by friction and wear. In this way, the service life of aircraft blades protected only by the TiN film layer is difficult to be greatly improved

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