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Method for preparing damping vibration attenuation composite coating on surface of rotary machine thin-shell component

A technology of composite coating and rotating machinery, applied in the field of materials, to achieve high stability, increased dynamic stiffness, and good bonding force

Inactive Publication Date: 2014-02-12
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the formulation and preparation method of composite hard coating for damping and reducing vibration of thin-shell components of rotating machinery.

Method used

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  • Method for preparing damping vibration attenuation composite coating on surface of rotary machine thin-shell component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Using the engine rotor blade as the substrate, the oil and impurities on the surface of the substrate are removed, and then placed in the vacuum chamber of the filtered arc ion coating machine;

[0031] Evacuate the vacuum chamber to a pressure of ≤1×10 -3 Pa, and then preheat the substrate to 200°C;

[0032] Introduce argon gas into the vacuum chamber until the pressure is 0.5 Pa, start the filtered arc ion coating machine, use metal titanium as the target material, deposit titanium coating on the substrate surface, control the negative bias voltage amplitude of the substrate to 200V, and the bias duty cycle 10~30%, the main arc current is 40~80A; the deposition time is 8min, and a titanium coating with a thickness of 1μm is formed on the surface of the substrate;

[0033] Using Ni 60 Cr 33.7 Al 4.5 Y 1.8 The alloy is used as the target material, and Ni is deposited on the surface of the titanium coating 60 Cr 33.7 Al 4.5 Y 1.8 Alloy coating, control substrate...

Embodiment 2

[0036] Using the rotating blade as the substrate, the oil and impurities on the surface of the substrate are removed, and then placed in the vacuum chamber of the filtered arc ion coating machine;

[0037] Evacuate the vacuum chamber to a pressure of ≤1×10 -3 Pa, then preheat the substrate to 100°C;

[0038] Introduce argon gas into the vacuum chamber until the pressure is 0.6 Pa, start the filtered arc ion coating machine, use metal titanium as the target material, deposit titanium coating on the substrate surface, control the negative bias voltage amplitude of the substrate to 200V, and the bias duty cycle 10~30%, the main arc current is 40A; the deposition time is 10min, and a titanium coating with a thickness of 1.5μm is formed on the surface of the substrate;

[0039] Using Ni 60 Cr 33.7 Al 4.5 Y 1.8 The alloy is used as the target material, and Ni is deposited on the surface of the titanium coating 60 Cr 33.7 Al 4.5 Y 1.8 Alloy coating, control substrate negativ...

Embodiment 3

[0042] Using the rotating blade as the substrate, the oil and impurities on the surface of the substrate are removed, and then placed in the vacuum chamber of the filtered arc ion coating machine;

[0043] Evacuate the vacuum chamber to a pressure of ≤1×10 -3 Pa, and then preheat the substrate to 300°C;

[0044] Introduce argon gas into the vacuum chamber until the pressure is 0.8 Pa, turn on the filtered arc ion coating machine, use metal titanium as the target material, deposit titanium coating on the surface of the substrate, control the negative bias voltage amplitude of the substrate to 300V, and the bias duty cycle 10~30%, the main arc current is 80A; the deposition time is 10min, and a titanium coating with a thickness of 0.5μm is formed on the surface of the substrate;

[0045] Using Ni 60 Cr 33.7 Al 4.5 Y 1.8 The alloy is used as the target material, and Ni is deposited on the surface of the titanium coating 60 Cr 33.7 Al 4.5 Y 1.8 Alloy coating, control subs...

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Abstract

The invention provides a method for preparing a damping vibration attenuation composite coating on the surface of a rotary machine thin-shell component, and belongs to the technical field of materials. The method comprises the following steps of (1) by utilizing the rotary machine thin-shell component as a base body, putting the base body in a vacuum chamber of a filtering electric arc ion plating machine; (2) preheating the base body after vacuumizing; (3) charging argon, starting the filtering electric arc ion plating machine, and depositing a titanium coating on the surface of the base body; (4) depositing a Ni60Cr33.7Al4.5Y1.8 alloy coating on the surface of the titanium coating; (5) depositing a magnesium aluminum alloy coating on the surface of the Ni60Cr33.7Al4.5Y1.8 alloy coating to prepare the damping vibration attenuation composite coating on the surface of the base body. The method for preparing the damping vibration attenuation composite coating further has the following characteristics that the pretreatment on the base body does not break the surface structure of a blade; the influence of the low preheating temperature on the structural characteristics of the material of the blade is small; the selected materials of the coating are common without being limited by conditions, such as purchase; the technique is simple, the stability is high, and no pollutants, such as dust and waste gas, in a cleaning process are generated.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method for preparing a damping and vibration-reduction composite coating on the surface of a thin shell component of a rotating machine. Background technique [0002] From the end of the last century to the present, with the development of science and technology, especially the continuous progress of aerospace technology, rotating machinery has gradually developed in the direction of high temperature, high pressure, and high speed. While its working conditions have become more and more severe, vibration problems have become more and more serious. protrude. Especially the vibration damage failures of typical thin-shell components in rotating machinery have the characteristics of multiple, sudden and catastrophic. It is difficult for thin-shell components to completely avoid the forced vibration of high-order resonance points in the entire operating range of the en...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/14
Inventor 杜广煜巴德纯孙伟韩清凯
Owner NORTHEASTERN UNIV
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