Hard and tough nano composite ZrAlCuN coating and preparation method thereof

A nano-composite, hard and tough technology, used in coatings, metal material coating processes, ion implantation plating and other directions to achieve the effect of improving hardness

Inactive Publication Date: 2015-04-01
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the hard nanocomposite coating on the surface of the metal substrate resists the impact load, the present invention provides a ZrAlCuN nanocomposite coating with both hardness and toughness and its preparation method

Method used

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  • Hard and tough nano composite ZrAlCuN coating and preparation method thereof
  • Hard and tough nano composite ZrAlCuN coating and preparation method thereof
  • Hard and tough nano composite ZrAlCuN coating and preparation method thereof

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Embodiment 1

[0043] In this embodiment, the titanium alloy Ti6Al4V is used as the substrate, and the magnetron sputtering technology is used to deposit the ZrAlCuN coating to improve the erosion resistance of the titanium alloy. Concrete preparation process is as follows:

[0044] (1) Preliminary cleaning of titanium alloy: use metal cleaning agent to ultrasonically clean the sample for 15 minutes, then rinse with tap water, then rinse in deionized water, and then put in 0.5% dilute H 3 PO 4 The middle surface is activated for 2 minutes, rinsed again, ultrasonically cleaned in acetone for 15 minutes, dried and placed in a vacuum chamber.

[0045](2) Cleaning by argon sputtering in the vacuum chamber: After heating to 200° C., argon gas (volume percentage >99.99%) is introduced into the vacuum chamber to increase the pressure in the vacuum chamber to 1.0 Pa. At this time, the bias power supply was turned on, and under the action of a negative bias voltage of 1200V, the argon gas was disch...

Embodiment 2

[0054] In this embodiment, the high-speed steel is used as the substrate, and the ZrAlCuN coating is deposited by magnetron sputtering technology to improve the hardness and impact load resistance of the high-speed steel. Concrete preparation process is as follows:

[0055] (1) Preliminary cleaning of titanium alloys: Use a metal cleaning agent to ultrasonically clean the sample for 15 minutes, then rinse it with tap water, then rinse it in deionized water, and then put it into 1% dilute HCl for surface activation for 2 minutes, and rinse it again. Sonicate in acetone for 15 minutes, dry and place in a vacuum chamber.

[0056] (2) Cleaning by argon sputtering in the vacuum chamber: after heating to 400° C., argon gas (volume percentage >99.99%) is introduced into the vacuum chamber to increase the pressure in the vacuum chamber to 3.0 Pa. At this time, the bias power supply was turned on, and under the action of a negative bias voltage of 1000V, the argon gas was discharged t...

Embodiment 3

[0065] In this embodiment, the high-speed steel is used as the substrate, and the ZrAlCuN coating is deposited by magnetron sputtering technology to improve the hardness and impact load resistance of the high-speed steel. Concrete preparation process is as follows:

[0066] (1) Preliminary cleaning of high-speed steel: Use a metal cleaning agent to ultrasonically clean the sample for 15 minutes, then rinse it with tap water, then rinse it in deionized water, and then put it into 0.8% dilute HCl for surface activation for 2 minutes, and rinse it again Sonicate in acetone for 15 minutes, dry and place in a vacuum chamber.

[0067] (2) Cleaning by argon sputtering in the vacuum chamber: after heating to 300° C., argon gas (volume percentage >99.99%) is introduced into the vacuum chamber to increase the pressure in the vacuum chamber to 2.0 Pa. At this time, the bias power supply was turned on, and under the action of a negative bias voltage of 1000V, the argon gas was discharged...

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Abstract

The invention discloses a hard and tough nano composite ZrAlCuN coating and a preparation method thereof, and relates to a nano composite coating and a preparation method thereof. A hard and tough coating with thickness of several microns is generated on the surface of a metal matrix to improve the wearing resistance of the matrix under action of impact load, and can be used as a tool and mould surface coating as well as an erosion-resistant protective coating. The coating is a composite coating consisting of a transition layer and a working layer, wherein the transition layer is used for improving bonding strength. The working layer is a nano composite coating consisting of nitrides and metal single substances which are immiscible with one another. The preparation method of the hard and tough nano composite ZrAlCuN coating comprises the following steps: sputtering Zr, Al and Cu elements by adopting a magnetron sputtering technology, and performing co-deposition by taking N2 as a working gas to form the nano composite structure coating. The coating not only has high hardness, but also has high toughness, and can be firmly bonded with the matrix.

Description

technical field [0001] The invention relates to a nanocomposite coating and a preparation method thereof, in particular to a zirconium aluminum copper nitrogen (hereinafter referred to as ZrAlCuN) nanocomposite coating with high hardness and high toughness and a preparation method thereof. Background technique [0002] The method of magnetron sputtering is used to deposit a layer of hard nitride coating on the metal substrate, which can significantly improve the hardness, wear resistance and corrosion resistance of the substrate. This method has been widely used. If a layer of TiN coating is deposited on the surface of the tool or mold, since TiN belongs to nitride ceramics, its hardness is much higher than that of metal, so the life of the tool or mold can be increased several times. The nitrides formed by transition metals Ti, Zr, Ta, etc. are currently the most common hard nitride coatings. [0003] Starting from improving the wear resistance, the higher the hardness of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/16
CPCC23C14/06C23C14/16C23C14/35
Inventor 杜军朱胜朱晓莹王红美郭蕾孟凡军
Owner ACADEMY OF ARMORED FORCES ENG PLA
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