Preparation method for super-thick energy absorption coating layer

A coating, ultra-thick technology, applied in the coating, metal material coating process, ion implantation plating and other directions, can solve the problems of reducing the service life of the blade, erosion and wear of the compressor blade, etc., to achieve convenient and accurate preparation, improve The effect of bond strength, high film toughness

Active Publication Date: 2019-08-20
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the engine works in harsh environments such as deserts, especially during take-off and landing, the sand and dust in the natural environment will be lifted up by the air flow to form a local high-concentration sand and dust environment, and a large amount of sand and dust will be sucked into the engine Internally, due to the high relative speed and excessive energy, severe erosion and wear are caused to the compressor blades, which significantly reduces the service life of the blades

Method used

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  • Preparation method for super-thick energy absorption coating layer
  • Preparation method for super-thick energy absorption coating layer
  • Preparation method for super-thick energy absorption coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] S01: cleaning the substrate with a gas ion source;

[0072] During the cleaning process of the surface gas ion source, heat treatment is carried out, and the heating temperature is 450°C. At the same time, the ion source treatment is divided into two stages; the first stage is 0-600V, beam current 2A, processing 30min, followed by 1500V, beam current 0.3A, processing 40min;

[0073] S02: The substrate is cleaned with high-power pulse metal ions;

[0074] During the high-power pulse metal cleaning process of the substrate, the metal elements to be cleaned are Ti, Cr, C, Co or Hf; the beam diameter during metal ion cleaning is 800mm.

[0075] S03: Depositing CrAlNC by feeding acetylene and nitrogen;

[0076] When depositing the film layer, the amount of acetylene and nitrogen gas is changed sinusoidally and alternately with time. Acetylene intake is 0-500sccm, nitrogen intake is 0-1000sccm, acetylene and nitrogen change sinusoidally with time, and the transient value r...

Embodiment 2

[0083] S01: cleaning the substrate with a gas ion source;

[0084] During the cleaning process of the surface gas ion source, heat treatment is carried out at a heating temperature of 480°C. At the same time, the ion source treatment is divided into two stages; the first stage is 0-600V, beam current 3A, processing 30min, followed by 1500V, beam current 0.5A, processing 40min;

[0085] S02: The substrate is cleaned with high-power pulse metal ions;

[0086] During the high-power pulse metal cleaning process of the substrate, the metal elements to be cleaned are Ti, Cr, C, Co or Hf; the beam diameter during metal ion cleaning is 800mm.

[0087] S03: Depositing CrAlNC by feeding acetylene and nitrogen;

[0088] When depositing the film layer, the amount of acetylene and nitrogen gas is changed sinusoidally and alternately with time. Acetylene intake is 0-500sccm, nitrogen intake is 0-1000sccm, acetylene and nitrogen change sinusoidally with time, and the transient value ratio...

Embodiment 3

[0095] S01: cleaning the substrate with a gas ion source;

[0096] During the cleaning process of the surface gas ion source, heat treatment is carried out, and the heating temperature is 5000C. At the same time, the ion source treatment is divided into two stages; the first stage is 0-600V, beam current 4A, processing 30min, followed by 1600V, beam current 0.8A, processing 40min;

[0097] S02: The substrate is cleaned with high-power pulse metal ions;

[0098] During the high-power pulse metal cleaning process of the substrate, the metal elements to be cleaned are Ti, Cr, C, Co or Hf; the beam diameter during metal ion cleaning is 800mm.

[0099] S03: Depositing CrAlNC by feeding acetylene and nitrogen;

[0100] When depositing the film layer, the amount of acetylene and nitrogen gas is changed sinusoidally and alternately with time. Acetylene intake is 0-500sccm, nitrogen intake is 0-1000sccm, acetylene and nitrogen change sinusoidally with time, and the transient value r...

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Abstract

The invention relates to a preparation method for a super-thick energy absorption coating layer. The preparation method comprises the steps that S01, a substrate is subjected to gas ion source cleaning; S02, the substrate is subjected to high-power pulse metal ion cleaning; S03, acetylene and nitrogen are injected for CrAlNC deposition; S04, an acetylene valve is closed, and ZrN is deposited through high-power pulse magnetic control; S05, the nitrogen is stopped, and the acetylene is injected for CrAlC deposition; and S06, a film layer is circularly deposited till the thickness of the film layer is larger than 20 [mu]m. According to the preparation method provided by the embodiment of the invention, through the mode of combining a gas ion source technology and a high-power pulse magnetic control technology with a multi-arc ion plating technology, the deposited super-thick coating layer is small in internal stress and good in toughness, impact resistance and energy absorption performance. The preparation method is simple, easy to implement, low in cost and high in efficiency, and then is quite suitable for batch production.

Description

technical field [0001] The invention relates to the field of high-speed particle erosion-resistant coatings, in particular to a preparation method of an ultra-thick and super-tough coating. Background technique [0002] When the engine works in harsh environments such as deserts, especially during take-off and landing, the sand and dust in the natural environment will be lifted up by the air flow to form a local high-concentration sand and dust environment, and a large amount of sand and dust will be sucked into the engine Internally, due to the high relative speed and excessive energy, severe erosion and wear are caused to the compressor blades, which significantly reduces the service life of the blades. Contents of the invention [0003] In order to solve the above problems, it is necessary to modify the surface of the substrate to enhance the surface hardness, wear resistance and erosion resistance. Energy-absorbing coating is an effective means to solve this problem. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/02
CPCC23C14/0057C23C14/028C23C14/0635C23C14/0641C23C14/0664C23C14/352
Inventor 廖斌欧阳晓平何卫锋
Owner BEIJING NORMAL UNIVERSITY
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