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Anti-corrosion environment barrier coating, preparation method and application of anti-corrosion environment barrier coating and engine

An environmental barrier and corrosion-resistant technology, applied in the field of materials, can solve problems such as lack of better, achieve the effects of short time consumption, extended reliability and overall service life, and simple preparation methods

Active Publication Date: 2018-09-04
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For CMAS corrosion, there is no better method at home and abroad

Method used

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  • Anti-corrosion environment barrier coating, preparation method and application of anti-corrosion environment barrier coating and engine
  • Anti-corrosion environment barrier coating, preparation method and application of anti-corrosion environment barrier coating and engine
  • Anti-corrosion environment barrier coating, preparation method and application of anti-corrosion environment barrier coating and engine

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preparation example Construction

[0028] The preparation method of the corrosion-resistant environment barrier coating provided by the embodiment of the present invention includes the following steps: using a plasma spraying-physical vapor deposition method, preparing an Si coating on the surface of the substrate in sequence, and preparing a Si coating on the surface of the Si coating on the side away from the substrate. Prepare a mullite coating and prepare Yb on the surface of the side of the mullite coating away from the Si coating 2 SiO 5 Coating, environmental barrier coating. An aluminum film layer is prepared on the surface of the environmental barrier coating to obtain an aluminum-plated sample. Vacuum heat treatment of aluminum-plated samples to obtain a corrosion-resistant environment barrier coating.

[0029]Optionally, the raw material of the matrix includes a silicon carbide-based composite material, and the silicon carbide-based composite material includes a SiC / SiC composite material. Among t...

Embodiment 1

[0061] Using the SiC / SiC composite material as the matrix, use gasoline, acetone and alcohol to decontaminate and clean the matrix in sequence for 10 minutes, then install the matrix on the fixture and place it in a vacuum tank, evacuate the vacuum tank to 0.45mbar, and then backfill it with argon Gas to 38mbar, and then vacuum to 1.45mbar.

[0062] A Si coating with a thickness of 45 μm and Si powder with a particle size of 15 μm as raw material was prepared on the surface of the cleaned substrate by plasma spraying-physical vapor deposition technology. The plasma spraying conditions in the Si coating preparation process are as follows: the net power of plasma spraying is 40kW, the flow rate of argon gas in the plasma gas is 90NSPM, the flow rate of hydrogen gas is 5NSPM, the powder feeding rate is 15g / min, the spraying distance is 300mm, and the temperature of the substrate is 890°C.

[0063] A mullite coating with a thickness of 45 μm and agglomerated mullite powder with a...

Embodiment 2

[0069] Using the SiC / SiC composite material as the substrate, use gasoline, acetone and alcohol to decontaminate and clean the substrate by ultrasonic for 15 minutes, then install the substrate on the fixture and place it in a vacuum tank, evacuate the vacuum tank to 0.55mbar, and then backfill it with argon Gas to 42mbar, and then vacuum to 1.55mbar.

[0070] A Si coating with a thickness of 55 μm and Si powder with a particle size of 45 μm as raw material was prepared on the surface of the cleaned substrate by plasma spraying-physical vapor deposition technology. The plasma spraying conditions in the Si coating preparation process are as follows: the net power of plasma spraying is 50kW, the flow rate of argon gas in the plasma gas is 120NSPM, the flow rate of hydrogen gas is 10NSPM, the powder feeding rate is 20g / min, the spraying distance is 500mm, and the temperature of the substrate is 910°C.

[0071] A mullite coating with a thickness of 55 μm and agglomerated mullite ...

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Abstract

The invention relates to an anti-corrosion environment barrier coating, a preparation method and application of the anti-corrosion environment barrier coating and an engine and belongs to the field ofmaterials. The preparation method comprises the steps that by adopting a plasma spraying-physical vapor deposition method, a Si coating, a mullite coating and a Yb2SiO5 coating are sequentially prepared on the surface of a base body, and the environment barrier coating is obtained; an aluminum thin layer is prepared on the surface of the environment barrier coating, and an aluminum plated sampleis obtained; and vacuum heat treatment is carried out on the aluminum plated sample, and the anti-corrosion environment barrier coating is obtained. The preparation method is simple, operation is easy, and short time is consumed. The prepared anti-corrosion environment barrier coating is good in oxidation resistance and corrosion resistance such as anti-CMAS corrosion performance. The anti-corrosion environment barrier coating is used for preparing the engine, and the using requirement of a heat end component of the engine can be met. According to the engine containing the anti-corrosion environment barrier coating, the reliability and the stability of the heat end structure component in the using process can be guaranteed, the reliability of the engine can be improved, and the service life of the whole engine can also be prolonged.

Description

technical field [0001] The invention relates to the field of materials, and in particular to a corrosion-resistant environment barrier coating, a preparation method and application thereof, and an engine. Background technique [0002] In order to meet the development needs of my country's new generation of fighter jets, it is necessary to develop aeroengines with a large thrust-to-weight ratio. Thrust-vectoring engines with a thrust-to-weight ratio of 10 can provide more reliable power for new-generation fighters such as ultra-short take-off and landing, vertical take-off and landing. The development of the advanced engine marks that my country has achieved a historic leap on the road of independent research and development of aero-engines, and has greatly narrowed the gap with the United States, Europe and Russia in the field of modern jet engines, which has important strategic significance for improving my country's military strength . [0003] In order to meet the requir...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C4/04C23C4/11C23C4/134C23C14/18C23C14/35C23C14/58F02B23/00
CPCC23C4/04C23C4/11C23C4/134C23C14/185C23C14/35C23C14/5806C23C28/322C23C28/345F02B23/00Y02T10/12
Inventor 张小锋周克崧刘敏邓畅光邓春明宋进兵毛杰张吉阜杨焜徐丽萍陈志坤曾威陈龙飞
Owner GUANGDONG INST OF NEW MATERIALS
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