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A kind of hard and tough nanocomposite zralcun coating and preparation method thereof

A nano-composite and coating technology, applied in the direction of coating, metal material coating process, ion implantation plating, etc., to achieve the effect of improving hardness

Inactive Publication Date: 2017-06-13
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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  • A kind of hard and tough nanocomposite zralcun coating and preparation method thereof
  • A kind of hard and tough nanocomposite zralcun coating and preparation method thereof
  • A kind of hard and tough nanocomposite zralcun coating and preparation method thereof

Examples

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Embodiment 1

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

[0044] (1) Preliminary cleaning of titanium alloy: Use metal cleaner 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, cleaned in acetone ultrasonically for 15 minutes, dried and placed in a vacuum chamber.

[0045] (2) Argon sputtering cleaning in the vacuum chamber: After heating to 200°C, argon (volume percentage> 99.99%) to increase the pressure in the vacuum chamber to 1.0Pa. At this time, the bias power is turned on, and under the action of a negative bias voltage of 1200V, the argon discharge generates plasma, which bombards the substrate under the action of the bias volta...

Embodiment 2

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

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

[0056] (2) Argon sputtering cleaning in vacuum chamber: After heating to 400°C, argon (volume percentage> 99.99%) to increase the pressure in the vacuum chamber to 3.0Pa. At this time, the bias power supply is turned on, and under the action of a negative bias voltage of 1000V, argon discharge generates plasma, which bombards the substrate under the action of the bias voltage, and b...

Embodiment 3

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

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

[0067] (2) Argon sputtering cleaning in vacuum chamber: After heating to 300℃, argon (volume percentage> 99.99%) to increase the pressure in the vacuum chamber to 2.0Pa. At this time, the bias power supply is turned on, and under the action of a negative bias voltage of 1000V, argon discharge generates plasma, which bombards the substrate under the action of the bias voltage, an...

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

Claims

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Application Information

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Patent Type & Authority Patents(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