High-entropy alloy film on surface of bore of barrel and preparation method of high-entropy alloy film

Abstract

The invention discloses a high-entropy alloy film on the surface of a barrel inner bore and a preparation method of the high-entropy alloy film. A barrel inner bore base body is sequentially subjected to ultrasonic cleaning and plasma cleaning; a plasma sputtering method is adopted, and a WMoTaNb layer is deposited on the surface of the body tube inner bore base body subjected to plasma cleaning based on a WMoTaNb target; a plasma sputtering method is adopted, and a WMoTaNbSi gradient transition layer is deposited on the WMoTaNb layer on the basis of the WMoTaNb target and the Si target; a plasma sputtering method is adopted, a WMoTaNbSi layer is deposited on the WMoTaNbSi gradient transition layer on the basis of a WMoTaNb target and a Si target, and a high-entropy alloy film is obtained; the high-entropy alloy film is prepared on the surface of the inner bore to replace an original Cr coating, the high-entropy alloy film has the advantages of being high in melting point, low in heat conductivity, high in hardness, resistant to abrasion, good in high-temperature stability and the like, the problems that a traditional electroplating Cr coating is prone to generating thermal stress cracks and the like can be solved, and then the service life of the barrel is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a high-entropy alloy film on the inner bore surface of a barrel and a preparation method thereof. Background technique [0002] As a suppression weapon in conventional warfare, artillery has an irreplaceable role. The barrel is the core component of the artillery system and determines the combat effectiveness of the artillery. While achieving long firing range, high initial velocity, and high firing rate, the high temperature, high pressure, and high-charge internal bore environment makes the barrel life problem increasingly prominent. In the case of ablation and wear of the barrel, the internal bore structure will change, so that the internal ballistic performance of the artillery will change (for example, the decrease in the muzzle velocity forces the range to decrease, or even the first close-in projectile occurs, etc.). At present, the ablation wear life of ...

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Problems solved by technology

[0004] However, although the WMoTaNb refractory high-entropy alloy film has the advantages of high melting point, low thermal conductivity, and good thermal stability, its ablation resistance and wear resistance still need to be improved.

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