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Method for preparing anti-erosion coating on surface of aero engine air compressor blade

An aero-engine and compressor technology, which is applied in the field of preparation of protective coatings on the surfaces of aero-engine compressor blades, can solve the problems of tantalum wire consumption and the like, and achieve the effects of high film-base bonding force, excellent corrosion resistance and dense organization.

Inactive Publication Date: 2015-04-15
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is the need to consume more expensive tantalum wire

Method used

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  • Method for preparing anti-erosion coating on surface of aero engine air compressor blade
  • Method for preparing anti-erosion coating on surface of aero engine air compressor blade
  • Method for preparing anti-erosion coating on surface of aero engine air compressor blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Deposition of TiAlN coating on TC4 titanium alloy.

[0027] (1) Prepare evaporating rods for use; Ti (50%wt) Al (50%wt) alloy rods are used as evaporating rods;

[0028] (2) Polish the Φ16×2mm disc cut from the TC4 titanium alloy with 150#, 300#, 400#, 800#, 1500#, 2000# sandpaper in sequence, and then polish it mechanically. Then put it into acetone for ultrasonic cleaning for 30min, and install it on the rotating substrate frame of electron beam physical vapor deposition equipment;

[0029] (3) Place the TiAl alloy evaporation rod in a water-cooled copper crucible;

[0030] (4) Vacuumize the vacuum chamber so that the pressure in the vacuum chamber is lower than 5.0×10 -3 Pa;

[0031] (5) An appropriate amount of Ar is introduced into the vacuum chamber, the pressure of the vacuum chamber is controlled within 20Pa, the rotation speed of the rotating substrate holder is set at 15rpm, the substrate is applied with a pulse bias voltage of -700V DC or a du...

Embodiment 2

[0040] Example 2: Deposition of TiAlCrYN coatings on stainless steel substrates.

[0041] (1) Prepare evaporation rods for use; TiAlCrY alloy evaporation rods;

[0042] (2) Polish the Φ16×2mm disc cut from the stainless steel upper wire with 150#, 300#, 400#, 800#, 1500#, 2000# sandpaper in sequence, and then polish it mechanically. Then put it into acetone for ultrasonic cleaning for 30min, and install it on the rotating substrate frame of electron beam physical vapor deposition equipment;

[0043] (3) Place the TiAlCrY alloy rod in a water-cooled copper crucible;

[0044] (4) Vacuumize the vacuum chamber so that the pressure in the vacuum chamber is lower than 5.0×10 -3 Pa;

[0045] (5) A proper amount of Ar is introduced into the vacuum chamber, the pressure of the vacuum chamber is controlled within the range of 1-20Pa, the rotation speed of the rotating substrate holder is set to 30rpm, the substrate is applied with a pulse bias voltage of -2000V DC or a duty ratio g...

Embodiment 3

[0054] Example 3: Deposition of TiAlN+Al on stainless steel substrate 2 o 3 coating

[0055] (1) Prepare evaporation rods for use; 99.99% pure aluminum rods and Ti (50%wt) Al (50%wt) alloy rods;

[0056] (2) Polish the Φ16×2mm disc cut from the stainless steel upper wire with 150#, 300#, 400#, 800#, 1500#, 2000# sandpaper in sequence, and then polish it mechanically. Then put it into acetone for ultrasonic cleaning for 30min, and install it on the rotating substrate frame of electron beam physical vapor deposition equipment;

[0057] (3) Place pure Al and TiAl alloy rods in two water-cooled copper crucibles;

[0058] (4) Vacuumize the vacuum chamber so that the pressure in the vacuum chamber is lower than 5.0×10 -3 Pa;

[0059] (5) A proper amount of Ar is introduced into the vacuum chamber, the pressure of the vacuum chamber is controlled within the range of 1Pa, the rotation speed of the rotating substrate holder is set at 1rpm, the substrate is applied with a pulse b...

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Abstract

The present invention discloses a method for preparing an anti-erosion coating on the surface of an aero engine air compressor blade, and belongs to the technical field of coating preparation. According to the method, hollow cathode electron gun assisted electron beam physical vapor deposition is adopted, and a target evaporation component, a hollow cathode electron gun current, an electron beam evaporation current, and types and flows of reaction gases are controlled to prepare an anti-erosion coating on the surface of an aero engine air compressor blade; and the anti-erosion protection coating is a MeX type, can be deposited on stainless steel, a titanium alloy and a plurality of metal substrates, and can be adopted as a surface protection coating for cutter molds and other parts requiring performances such as erosion wearing resistance, erosion corrosion resistance and the like, wherein Me can be Ti, Cr, Zr, Y, Al, Si, V, B, Hf, Nb, Mo, a rare earth element or a combination thereof, and X can be O, N, C, or a combination thereof.

Description

technical field [0001] The invention belongs to the technical field of coating preparation, and in particular relates to a method for preparing a protective coating on the surface of an aeroengine compressor blade. Background technique [0002] During the service of an aero-engine, the compressor blades are severely eroded by the external environment, which is mainly reflected in the following: a large amount of dust and gravel in the low-altitude atmosphere will wear the engine compressor blades under the action of a strong intake air flow, resulting in erosion of the leading edge of the blades , reducing the working efficiency of the compressor, resulting in a decrease in engine thrust and a decrease in service life; in the near-ocean service environment, the compressor blades work in an environment with high temperature and heavy salt fog, and salt-containing particles in the ocean atmosphere are deposited on the surface of the blades. The moisture absorption and deliques...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/46
Inventor 彭徽周大朋郭洪波宫声凯
Owner BEIHANG UNIV