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Protective coating capable of resisting erosion of solid particles and preparation method of protective coating

A technology of protective coating and solid particles, which is applied in the field of protective coatings against erosion of solid particles and its preparation, and can solve the problem of poor adhesion of aero-engine substrates, which affects the anti-erosion performance of coatings, and cannot play an anti-erosion role. Effectiveness and other issues, to achieve reliable solid particle erosion protection performance, avoid spalling failure, and facilitate large-area uniform deposition

Pending Publication Date: 2022-02-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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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  • Protective coating capable of resisting erosion of solid particles and preparation method of protective coating
  • Protective coating capable of resisting erosion of solid particles and preparation method of protective coating
  • Protective coating capable of resisting erosion of solid particles and preparation method of protective coating

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Effect test

Embodiment 1

[0045] Such as figure 1 As shown, the titanium alloy substrate is cleaned with degreasing agent, acetone and absolute ethanol in sequence, and the cleaned and dried titanium alloy substrate is put into the vacuum chamber, and argon gas of 35.0 sccm is first introduced into the vacuum chamber. , set the current of the linear anode ion source to 0.2A, and the chamber pressure to 0.2Pa, use ionized argon ions to etch the substrate for 30min; The bias voltage is -70V, the arc current is 70A, the Ar gas pressure is 6.0Pa, and the deposition thickness is 2.0μm; then the Ti-Al-N transition layer is deposited by arc ion plating technology combined with DC magnetron sputtering technology, and the reaction gas is introduced Nitrogen and argon, the mixed gas pressure is 2.7Pa, the proportion of nitrogen to the total gas flow is 8%, the arc current is 70A, the DC magnetron sputtering power is 3000W, the bias voltage is -200V, and the thickness is 6.0μm; the third In the first step, arc i...

Embodiment 2

[0048] Put the cleaned and dried titanium alloy substrate into the vacuum chamber, firstly pass argon gas 35.0sccm into the vacuum chamber, set the current of the linear anode ion source to 0.2A, and the chamber pressure to 0.2Pa. The substrate was etched with argon ions for 30 minutes; then the Ti bonding layer was deposited by arc ion plating technology, the target material was Ti target, the negative bias voltage of the substrate was -70V, the arc current was 70A, the Ar gas pressure was 6.0Pa, and the deposition thickness was 1.5 μm; then use the arc ion plating technology combined DC magnetron sputtering technology to deposit the Ti-Al-N transition layer, feed the reaction gas nitrogen and argon, the mixed gas pressure is 2.7Pa, and the proportion of nitrogen to the total gas flow is 8% , the arc current is 70A, the DC magnetron sputtering power is 3000W, the bias voltage is -200V, and the thickness is 5.5μm; the third step adopts the arc ion plating technology to deposit ...

Embodiment 3

[0051] Put the cleaned and dried titanium alloy substrate into the vacuum chamber, firstly pass argon gas 35.0sccm into the vacuum chamber, set the current of the linear anode ion source to 0.2A, and the chamber pressure to 0.2Pa. The substrate was etched with argon ions for 30 minutes; then the Ti bonding layer was deposited by arc ion plating technology, the target was a Ti target, the negative bias of the substrate was -70V, the arc current was 70A, the Ar gas pressure was 6.0Pa, and the deposition thickness was 2.0 μm; then use the arc ion plating technology combined DC magnetron sputtering technology to deposit the Ti-Al-N transition layer, feed the reaction gas nitrogen and argon, the mixed gas pressure is 2.7Pa, and the proportion of nitrogen to the total gas flow is 8% , the arc current is 70A, the DC magnetron sputtering power is 3000W, the bias voltage is -200V, and the thickness is 6.0μm; the third step is to use arc ion plating technology to deposit the TiAlN surfac...

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Abstract

The invention discloses a protective coating capable of resisting erosion of solid particles, which comprises a substrate, and a Ti layer, a Ti2AlN layer and a TiAlN layer which are sequentially plated on the surface of the substrate, wherein the Ti layer and the Ti2AlN layer are transition layers. The protective coating has relatively high erosion resistance. The invention also discloses a preparation method of the protective coating, which comprises the following steps of: depositing a Ti layer on the surface of a substrate by adopting an arc ion plating technology; depositing a Ti-Al-N layer on the surface of the Ti layer through an Al target material and nitrogen by adopting a direct current magnetron sputtering technology; and adopting an arc ion plating technology to form a TiAlN layer on the surface of the Ti-Al-N layer through a TiAl target to obtain a Ti / Ti-Al-N / TiAlN composite coating, and then performing annealing treatment to obtain the Ti / Ti2AlN / TiAlN protective coating. The preparation method is simple in process, and the operation process is simple and easy to control.

Description

technical field [0001] The invention belongs to the field of protective coatings, in particular to a protective coating resistant to erosion of solid particles and a preparation method thereof. Background technique [0002] High-temperature structural materials originated from the need for improved speed performance of military aircraft in the 1940s. In order to ensure high engine efficiency, resistance to high temperature gas erosion and erosion of corrosive media, and long-term safe and reliable operation, materials must have high strength, creep resistance, good fracture toughness, and stable structure. High-temperature structural materials can be divided into silicon-based ceramics (such as Si3N4, SiC), carbon materials (graphite materials, carbon / carbon composite materials, carbon / ceramic composite materials, etc.) , Fe-Al and Ti-Al intermetallic compounds). [0003] The research, development and application of high-temperature structural materials are closely related...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/02C23C14/16C23C14/32C23C14/35C23C14/58
CPCC23C14/325C23C14/16C23C14/0641C23C14/352C23C14/0036C23C14/5806C23C14/025
Inventor 汪爱英阮海涛王振玉王丽张栋
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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