Gradient multi-layer protective coating capable of resisting erosion of solid particles and preparation method of gradient multi-layer protective coating

A protective coating and solid particle technology, applied in the coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems that affect the anti-erosion performance of the coating, cannot achieve anti-erosion effect, high heat, etc. , to achieve the effect of being conducive to industrial production and application, easy to uniformly deposit large areas, and simple and easy to control the operation process

Pending Publication Date: 2022-07-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, it is still difficult for the above-mentioned coating to form a good protection for the substrate in the actual use process. This is because the erosion angle is not single during the operation of the aircraft. It cannot play a comprehensive anti-erosion effect, and the above-mentioned coating has poor adhesion to the aero-engine substrate, and it is easy to fall off from the substrate under the action of erosion, which seriously affects the anti-erosion performance of the above-mentioned coating. Therefore, the existing TiAlN , CrAlN, and TiAlSiN coatings cannot meet the multi-angle, high heat, and high-strength erosion faced by aero-engines

Method used

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  • Gradient multi-layer protective coating capable of resisting erosion of solid particles and preparation method of gradient multi-layer protective coating
  • Gradient multi-layer protective coating capable of resisting erosion of solid particles and preparation method of gradient multi-layer protective coating
  • Gradient multi-layer protective coating capable of resisting erosion of solid particles and preparation method of gradient multi-layer protective coating

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Experimental program
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Effect test

Embodiment 1

[0055] The invention provides a preparation method of a gradient multi-layer protective coating resistant to erosion of solid particles, such as figure 1 shown, the specific steps are as follows:

[0056] (1) Step 1. Use degreaser, acetone and anhydrous ethanol to clean the titanium alloy substrate in sequence, put the cleaned and dried titanium alloy substrate into the vacuum chamber, and first pass argon gas 35.0 into the vacuum chamber. sccm, set the current of the linear anode ion source to 0.2A, the chamber pressure to 0.2Pa, and use ionized argon ions to etch the substrate for 30min; then use arc ion plating technology to deposit the Ti binding layer, the target material is Ti target, the substrate The negative bias voltage is -70V, the arc current is 70A, the Ar gas pressure is 6.0Pa, and the deposition thickness is 2.0μm;

[0057] (2) Then adopt the arc ion plating technology to deposit the TiN transition layer, feed the reaction gas nitrogen, the chamber pressure is ...

Embodiment 2

[0063] (1) First, use degreaser, acetone and anhydrous ethanol to clean the titanium alloy substrate in sequence, put the cleaned and dried titanium alloy substrate into the vacuum chamber, and first pass argon gas into the vacuum chamber for 35.0sccm , set the current of the linear anode ion source to 0.2A, the chamber pressure to 0.2Pa, and use ionized argon ions to etch the substrate for 30 minutes; then use arc ion plating technology to deposit the Ti binding layer, the target is Ti target, and the substrate is negative The bias voltage is -70V, the arc current is 70A, the Ar gas pressure is 6.0Pa, and the deposition thickness is 2.0μm;

[0064] (2) Then adopt the arc ion plating technology to deposit the TiN transition layer, feed the reaction gas nitrogen, the chamber pressure is 6.0Pa, the arc current is 70A, the bias voltage is -70V, and the thickness is 4.0μm;

[0065] (3) The TiAlN layer is deposited by arc ion plating technology, and the reaction gas nitrogen is int...

Embodiment 3

[0069](1) First, use degreaser, acetone and anhydrous ethanol to clean the titanium alloy substrate in sequence, put the cleaned and dried titanium alloy substrate into the vacuum chamber, and first pass argon gas into the vacuum chamber for 35.0sccm , set the current of the linear anode ion source to 0.2A, the chamber pressure to 0.2Pa, and use ionized argon ions to etch the substrate for 30min; then use arc ion plating technology to deposit the Ti binding layer, the target is Ti target, and the substrate is negative The bias voltage is -70V, the arc current is 70A, the Ar gas pressure is 6.0Pa, and the deposition thickness is 2.0μm;

[0070] (2) Then adopt the arc ion plating technology to deposit the TiN transition layer, feed the reaction gas nitrogen, the chamber pressure is 6.0Pa, the arc current is 70A, the bias voltage is -70V, and the thickness is 4.0μm;

[0071] (3) The TiAlN layer is deposited by arc ion plating technology, and the reaction gas nitrogen is introduce...

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Abstract

The invention discloses a solid particle erosion resistant gradient multilayer protective coating which comprises a base body, a Ti layer deposited on the surface of the base body, a TiN layer deposited on the surface of the Ti layer and a TiAlN layer deposited on the surface of the TiN layer, the TiAlN layer comprises at least one stress absorption layer, and the stress absorption layer is a TiN-Ti-TiN layer of a gradient sandwich structure. The gradient multi-layer protective coating has high multi-angle resistance, high heat and high-strength erosion resistance. The invention further discloses a preparation method of the gradient multi-layer protective coating resistant to solid particle erosion. The operation process of the method is simple and easy to control, large-area uniform deposition is easy, and industrial production and application are facilitated.

Description

technical field [0001] The invention belongs to the field of protective coatings, in particular to a gradient multi-layer protective coating resistant to erosion of solid particles and a preparation method thereof. Background technique [0002] For aero-engines, the temperature and air compression ratio of the engine are directly related to the rate of fuel consumption and the thrust of the engine. Increasing the working temperature and reducing the weight of engine components are the two aspects of improving the performance of existing engines and researching new engines with high thrust-to-weight ratios. main measures. Therefore, the selection of materials for aviation and spacecraft engines should have four characteristics of "lighter, stiffer, stronger and more heat-resistant". [0003] During the operation of an aircraft, especially in the take-off and landing stage, solid particles such as dust, ice particles, and volcanic ash in the air will be entrained in the compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/16C23C14/32
CPCC23C14/325C23C14/0036C23C14/16C23C14/0641
Inventor 汪爱英阮海涛王丽王振玉周定伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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