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Method of reducing friction coefficient of coating through micro sand blasting after-treatment

A friction coefficient and coating technology, applied in the field of micro-blasting post-treatment to reduce the coating friction coefficient, can solve the problems of coating damage and performance degradation, and achieve the improvement of flatness, reduce friction coefficient, and improve anti-diffusion performance. Effect

Active Publication Date: 2020-05-05
湖南六方晶科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Micro-sandblasting post-treatment can significantly improve coating performance, but improper setting of experimental parameters can easily lead to coating damage and performance degradation

Method used

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  • Method of reducing friction coefficient of coating through micro sand blasting after-treatment
  • Method of reducing friction coefficient of coating through micro sand blasting after-treatment
  • Method of reducing friction coefficient of coating through micro sand blasting after-treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Sample pretreatment: Put the deposited coating samples into acetone and ethanol for ultrasonic cleaning for 15 minutes respectively to remove surface oil and water stains.

[0032] (2) Clamping into the furnace: evenly fix the treated samples on the turntable, and put them into the arc ion coating machine.

[0033] (3) Heating and vacuuming: pump the vacuum in the furnace chamber to 7×10^3Pa, and raise the temperature to 300°C.

[0034] (4) Deposit oxide coating: deposit a thin layer of Al on the surface of the sample 2 o 3 coating;

[0035] (5) Post-treatment of micro-sandblasting on the coated blade: after the coating is deposited, lower the temperature, take out the sample after cooling, and perform post-treatment of micro-sandblasting on the sample that has deposited the coating. 600#Al for sandblasting 2 o 3 Sand, the pressure is 2kg, and the manual dry spraying time is 25s. (For specific experimental data curves, see figure 2 B curve)

Embodiment 2

[0037] (1) Sample pretreatment: Put the deposited coating samples into acetone and ethanol for ultrasonic cleaning for 15 minutes respectively to remove surface oil and water stains.

[0038] (2) Clamping into the furnace: evenly fix the treated samples on the turntable, and put them into the arc ion coating machine.

[0039] (3) Heating and vacuuming: pump the vacuum in the furnace chamber to 7×10^4Pa, and raise the temperature to 400°C.

[0040] (4) Deposit oxide coating: deposit a thin layer of TiAlO on the surface of the sample 2 coating;

[0041] (5) Post-treatment of micro-sandblasting on the coated blade: after the coating is deposited, lower the temperature, take out the sample after cooling, and perform post-treatment of micro-sandblasting on the sample that has deposited the coating. 600#Al for sandblasting 2 o 3 Sand, the pressure is 4kg, and the manual dry spraying time is 15s. (For specific experimental data curves, see figure 2 C curve)

Embodiment 3

[0043] (1) Sample pretreatment: Put the deposited coating samples into acetone and ethanol for 20min ultrasonic cleaning to remove surface oil and water stains.

[0044] (2) Clamping into the furnace: evenly fix the treated samples on the turntable, and put them into the arc ion coating machine.

[0045] (3) Heating and vacuuming: pump the vacuum in the furnace chamber to 7×10^4Pa, and raise the temperature to 400°C.

[0046] (4) Deposit oxide coating: deposit a thin layer of TiAlO on the surface of the sample 2 coating;

[0047] (5) Post-treatment of micro-sandblasting on the coated blade: after the coating is deposited, lower the temperature, take out the sample after cooling, and perform post-treatment of micro-sandblasting on the sample that has deposited the coating. 800#Al for sandblasting 2 o 3 Sand, the pressure is 4kg, and the manual dry spraying time is 10s. (For specific experimental data curves, see figure 2 D curve)

[0048] Such as figure 1 Shown is the...

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Abstract

The invention discloses a method of reducing the friction coefficient of a coating through micro sand blasting after-treatment. In order to achieve the purposes that the problem that large particles exist on the surface of the arc ion plating coating is solved, and the friction coefficient of the coating is reduced, an oxide coating with the small thickness is deposited on the surface of a substrate which is covered with the coating, the feature that amorphous crystal grains of the oxide coating are small is utilized to overcome the defect that the surface of the coating is uneven, then the large particles which are caused by arc ion plating and exist on the surface of the coating are removed through micro sand blasting after-treatment, and therefore the surface can be flat and smooth, andthe friction coefficient of the coating is reduced. Sand grains continuously impact on the surface of the coating in the micro sand blasting after-treatment process, and the pressure stress can be effectively improved. Meanwhile, the existence of the oxide can have an effect that the impact force borne by the main coating of the substrate is buffered, and the damage of the coating is reduced. A compact oxide film is formed by the oxide at the high temperature, specifically, the oxide remains on the surface of the coating after sand blasting operation is accomplished, the diffusion of elementsand the heat can be avoided, the wear of the coating is reduced, and the service life of the coating substrate is remarkably prolonged.

Description

technical field [0001] The invention relates to coating surface treatment technology, in particular to a method for reducing coating friction coefficient by micro-sand blasting post-treatment. Background technique [0002] Arc ion plating is to initiate arc discharge between the cathode made of evaporated material and the anode formed in the vacuum chamber under vacuum conditions. The arc discharge evaporates the target material and deposits it on the surface of the substrate to form a film. Arc discharge will form an arc spot that moves irregularly on the surface of the cathode. The high-energy, high-density current carried by the arc spot can directly promote the transformation of the target material at the arc spot from a solid phase to a metal vapor plasma. The metal plasma is used for Depositing thin films, one is that the bombardment, implantation and deposition process of ions in the deposition process can activate the surface of the substrate and enhance the surface ...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/08C23C14/58
CPCC23C14/325C23C14/08C23C14/588
Inventor 钟向丽赵学书宋宏甲王金斌
Owner 湖南六方晶科技有限责任公司
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