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Metal-metal nitride laminated coating resistant to high temperature marine environment corrosion and preparation method thereof

A marine environment, multi-layer coating technology, applied in metal material coating process, coating, ion implantation plating, etc., can solve problems such as high-temperature corrosion of titanium alloys, achieve good bonding strength, simple preparation process, and high temperature resistance The effect of excellent corrosion performance in marine environment

Active Publication Date: 2019-08-23
HENAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a metal-metal nitride multi-layer coating and its preparation method resistant to high-temperature marine environment corrosion, which can solve the problem of high-temperature corrosion of titanium alloys, and provide a way of thinking for high-temperature protection of aero-engine parts

Method used

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  • Metal-metal nitride laminated coating resistant to high temperature marine environment corrosion and preparation method thereof
  • Metal-metal nitride laminated coating resistant to high temperature marine environment corrosion and preparation method thereof
  • Metal-metal nitride laminated coating resistant to high temperature marine environment corrosion and preparation method thereof

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Embodiment 1

[0052] In this embodiment, the metal / metal nitride multilayer coating resistant to high temperature marine environment corrosion is formed by alternately depositing Ti sub-layers and TiN sub-layers on the Ti6Al4V substrate, and the layers near the substrate and the uppermost layer are TiN layers. The thickness of the TiN sublayer is 2.0 μm, the thickness of each Ti sublayer is 0.1 μm, and the total number of layers is 17.

[0053] The preparation method of the above-mentioned metal / metal nitride multi-layer coating resistant to high temperature marine environment corrosion specifically includes the following steps:

[0054] (1) Cleaning of the substrate

[0055] First, after grinding and polishing the Ti6Al4V titanium alloy (Ti-6%Al-4%V, mass fraction) substrate, put it into a solution mixed with acetone and ethanol at a volume ratio of 1:2, and use 15-20kHz ultrasonic cleaning for 10- After 15 minutes, take it out and dry it; then use ion plating equipment to carry out ion b...

Embodiment 2

[0060] In this embodiment, the metal / metal nitride multilayer coating resistant to high temperature marine environment corrosion is formed by alternately depositing Ti sub-layers and TiN sub-layers on the Ti6Al4V substrate, and the layers near the substrate and the uppermost layer are TiN layers. The thickness of the TiN sublayer is 2.0 μm, the thickness of each Ti sublayer is 0.2 μm, and the total number of layers is 15 layers.

[0061] The preparation method of the above-mentioned metal / metal nitride multi-layer coating resistant to high temperature marine environment corrosion specifically includes the following steps:

[0062] (1) Cleaning of the substrate

[0063] First, after grinding and polishing the Ti6Al4V titanium alloy (Ti-6%Al-4%V, mass fraction) substrate, put it into a solution mixed with acetone and ethanol at a volume ratio of 1:2.5, and use 15~20kHz ultrasonic cleaning for 10~ After 15 minutes, take it out and dry it; then use the ion plating equipment to ca...

Embodiment 3

[0068] In this embodiment, the metal / metal nitride multilayer coating resistant to high temperature marine environment corrosion is formed by alternately depositing Ti sub-layers and TiN sub-layers on the Ti6Al4V substrate, and the layers near the substrate and the uppermost layer are TiN layers. The thickness of the TiN sublayer is 1.9 μm, the thickness of each Ti sublayer is 0.3 μm, and the total number of layers is 15 layers.

[0069] The preparation method of the above-mentioned metal / metal nitride multi-layer coating resistant to high temperature marine environment corrosion specifically includes the following steps:

[0070] (1) Cleaning of the substrate

[0071] First, after grinding and polishing the Ti6Al4V titanium alloy (Ti-6%Al-4%V, mass fraction) substrate, put it into a solution mixed with acetone and ethanol at a volume ratio of 1:3, and use 15~20kHz ultrasonic cleaning for 10~ After 15 minutes, take it out and dry it; then use ion plating equipment to carry ou...

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Abstract

The invention relates to the titanium alloy high temperature protection coating field, in particular to a metal-metal nitride laminated coating resistant to high temperature marine environment corrosion and a preparation method thereof. The metal-metal nitride laminated coating resistant to the high temperature marine environment corrosion is formed by alternatively depositing Ti sublayers and TiNsublayers on a substrate, wherein the layer close to the substrate and the uppermost layer are both the TiN layers, and the substrate is Ti6Al4V alloy. In the laminated coating, the thickness of eachTiN sublayer is 1.7-2.0[mu]m, the thickness of each Ti sublayer is 0.1-1.0[mum], and the total number of the Ti sublayers is an odd number from 13 to 21. The preparation method of the laminated coating includes: cleaning the substrate and alternatively depositing the TiN sublayers and the Ti sublayers. According to the preparation method, the thick Ti / TiN laminated coating different in sublayer proportion is prepared on the titanium alloy substrate, the coating of such type has good bonding strength with the substrate, and has large thickness, and furthermore high temperature and corrosion resistance of the titanium alloy substrate is improved by prolonging a diffusion path of a corrosive medium and reducing the number of structure defects.

Description

[0001] Technical field: [0002] The invention relates to the field of titanium alloy high-temperature protective coatings, in particular to a metal-metal nitride multilayer coating resistant to high-temperature marine environment corrosion and a preparation method thereof. [0003] Background technique: [0004] Titanium alloy has low density and high strength, and is a key material for aeroengine compressors. However, as a compressor blade material for medium-high temperature service, it has the following shortcomings: one is low hardness and poor erosion resistance, and the other is insufficient high-temperature corrosion resistance. Especially for aircraft engines serving in the marine environment, the titanium alloy parts of the compressor are exposed to medium or high temperature Cl - The synergistic corrosion of , O and water vapor, etc., the corrosion rate is not only much higher than the oxidation rate of pure air, but also at a lower temperature, a thick brittle diss...

Claims

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Application Information

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IPC IPC(8): C23C14/18C23C14/06C23C14/32
CPCC23C14/0021C23C14/0641C23C14/18C23C14/32
Inventor 张明明李勇峰赵红远吴婷婷张亚奇冯宜鹏谢文龙王雅慧苏建修
Owner HENAN INST OF SCI & TECH
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