NiAl/AlSiON multi-layer composite coating resistant to high-temperature oxidation and preparation method of NiAl/AlSiON multi-layer composite coating

A high-temperature oxidation-resistant, multi-layer composite technology, applied in coating, metal material coating process, high-efficiency propulsion technology, etc., can solve problems such as peeling, and achieve the effects of easy control of thickness, continuous sub-layer structure, and fast deposition rate

Pending Publication Date: 2022-08-09
HENAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of problems such as cracking and peeling caused by excessive stress and brittleness caused by excessive thickness of metal oxynitride ceramic coatings, the purpose of the present invention is to provide a NiAl / AlSiON multilayer composite coating resistant to high temperature oxidation and its preparation method , the multi-layer composite coating can meet the requirements of high thickness value, and is well bonded with the substrate, without cracks, delamination and other structural defects, dense structure, and has good high temperature oxidation resistance, can be titanium alloy or titanium aluminum Long-term coating high-temperature protection of alloys provides an option with potential application value

Method used

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  • NiAl/AlSiON multi-layer composite coating resistant to high-temperature oxidation and preparation method of NiAl/AlSiON multi-layer composite coating
  • NiAl/AlSiON multi-layer composite coating resistant to high-temperature oxidation and preparation method of NiAl/AlSiON multi-layer composite coating
  • NiAl/AlSiON multi-layer composite coating resistant to high-temperature oxidation and preparation method of NiAl/AlSiON multi-layer composite coating

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preparation example Construction

[0048] In the following specific implementation process, the high-temperature oxidation-resistant NiAl / AlSiON multi-layer composite coating and preparation method of the present invention are as follows: the multi-layer composite coating is prepared by using ion plating-sputtering co-deposition equipment, the AlSiON layer is prepared by ion plating technology, and the Magnetron sputtering to prepare NiAl metal sublayer, using AlSi target as ion plating cathode target to prepare AlSiON layer, using Ni 3 Al and Al targets are used as magnetron sputtering cathode targets to prepare NiAl metal sublayers. NiAl / AlSiON multilayer composite coatings are alternately deposited on various titanium alloys and titanium aluminum alloy substrates by AlSiON sublayers and NiAl metal sublayers. , the first layer and the top layer are both AlSiON layers; in the multi-layer composite coating, the thickness of each NiAl metal sub-layer is 0.05-0.5 μm, the number of layers is 5-9, the thickness of t...

Embodiment 1

[0052] In this embodiment, the preparation method of the NiAl / AlSiON multi-layer composite coating resistant to high temperature oxidation includes the following steps:

[0053] (1) Pre-processing

[0054] Using Ti-6Al-4V (wt.%) titanium alloy as the matrix, the sample was cut into a matrix material with a size of 15mm × 10mm × 1.5mm by wire cutting. After polishing the diamond paste, put the matrix into a mixed solution of acetone and ethanol, ultrasonically clean it for 10 minutes, and further remove oil and other solid contaminants on the surface of the matrix. Take it out and dry it, then hang it on the sample holder, and finally put it in the working room and put it into the working chamber. Vacuum to 7.0×10 -3 Pa.

[0055] (2) Sputtering bombardment cleaning

[0056] Composite coatings were prepared using ion plating-sputtering co-deposition equipment. Pour in argon gas, adjust the flow rate to control the argon pressure at 0.1Pa, apply a negative bias value of 800V ...

Embodiment 2

[0062]In this embodiment, the preparation method of the NiAl / AlSiON multilayer composite coating resistant to high temperature oxidation specifically includes the following steps:

[0063] (1) Pre-processing

[0064] Using Ti-5Al-2.5Sn (wt.%) titanium alloy as the matrix, the sample was cut into a matrix material with a size of 10mm × 10mm × 2mm by wire cutting. After polishing the diamond paste, put the matrix material into a mixed solution of acetone and ethanol, ultrasonically clean it for 15 minutes to further remove oil and other solid contaminants on the surface of the matrix, take it out and dry it, quickly hang it on the sample holder, and finally put it into the studio and evacuated to 6.0×10 -3 Pa.

[0065] (2) Sputtering bombardment cleaning

[0066] Coatings were prepared using ion plating-sputtering co-deposition equipment. Argon gas was introduced, the pressure was controlled at 0.2Pa, the substrate was applied with a negative bias value of 850V, the duty cyc...

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Abstract

The invention relates to the field of metal material surface high-temperature protective coatings, in particular to a high-temperature oxidation resistant NiAl / AlSiON multilayer composite coating and a preparation method thereof. The multi-layer composite coating is obtained by alternately depositing NiAl metal sub-layers and AlSiON sub-layers on a titanium alloy titanium-aluminum alloy substrate, the bottom layer and the top layer of the multi-layer composite coating are both the AlSiON sub-layers, the AlSiON sub-layers are prepared by adopting an ion plating technology, the NiAl metal sub-layers are prepared by adopting a magnetron sputtering technology, an AlSi target material is used as an ion plating cathode target material to prepare the AlSiON sub-layers, and the AlSiON sub-layers are prepared by adopting a magnetron sputtering technology. Ni3Al and an Al target are used as magnetron sputtering cathode target materials to prepare a NiAl metal sub-layer. The preparation process of the NiAl / AlSiON multi-layer composite coating comprises the steps of earlier stage treatment, ion sputtering cleaning, sub-layer deposition and top layer preparation. The thick composite coating obtained through ion plating and magnetron sputtering technology co-deposition is good in bonding strength with a base body and outstanding in oxidation resistance.

Description

Technical field: [0001] The invention relates to the field of high temperature protective coatings on the surface of metal materials, in particular to a NiAl / AlSiON multi-layer composite coating resistant to high temperature oxidation and a preparation method. Background technique: [0002] Aero-engine compressor blades are usually made of lightweight and high-strength titanium alloys and titanium-aluminum alloys. The high temperature (≥500°C) of the engine compressor blade and the service environment of solid particle erosion and erosion will cause significant damage to the component structure, resulting in a decline in service performance and a significant shortening of service life. The application of protective coatings on the surface can greatly improve the properties of components such as oxidation resistance, hardness and wear resistance. Metal oxygen and nitrogen compounds are widely used in aerospace, metallurgy, petroleum, chemical industry, catalytic filtration, ...

Claims

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Application Information

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IPC IPC(8): C23C14/16C23C14/06C23C14/02C23C14/32C23C14/35C22C21/02C22C28/00C22C30/00C22C14/00C22C21/00
CPCC23C14/165C23C14/0676C23C14/022C23C14/32C23C14/0021C22C21/02C22C28/00C22C14/00C22C21/003C22C30/00C23C14/352Y02T50/60
Inventor 张明明胡庆梅王雅慧张亚奇吴婷婷马利杰冯宜鹏付成果梁愉张腾飞强豪赵敏霞李钰赵红远李勇峰苏建修
Owner HENAN INST OF SCI & TECH
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