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High-hardness nano-composite coating as well as preparation method and application thereof

A nano-composite coating, high hardness technology, applied in coating, metal material coating process, ion implantation plating and other directions, can solve the problem of poor wear resistance of TiC and TiCN coatings, poor corrosion and wear resistance of coatings, hard The quality coating process is complex and other problems, to achieve excellent corrosion resistance, low cost, and improve the effect of hardness

Active Publication Date: 2021-06-29
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the substrate, the hardness and wear resistance of the hard PVD coating prepared by the prior art have been improved somewhat, but the prepared coating still has some disadvantages, for example, the prepared TiN coating has the disadvantages of low hardness and high friction coefficient , Another example is that TiC and TiCN coatings have the disadvantage of poor wear resistance. Another example is that the existing hard coating process is complicated, and the prepared coating has the problem of poor corrosion and wear resistance, etc.

Method used

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  • High-hardness nano-composite coating as well as preparation method and application thereof
  • High-hardness nano-composite coating as well as preparation method and application thereof
  • High-hardness nano-composite coating as well as preparation method and application thereof

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preparation example Construction

[0038] Another aspect of the embodiments of the present invention also provides the aforementioned method for preparing the high-hardness nanocomposite coating, which includes:

[0039] provide a substrate;

[0040] A transition layer and a TiAlCN layer are sequentially deposited on the surface of the substrate by adopting a multi-arc ion plating technology, thereby forming the high-hardness nanocomposite coating.

[0041] In some more specific embodiments, the method for depositing and forming the transition layer specifically includes:

[0042] Place the substrate in the reaction chamber, adopt multi-arc ion plating technology, use Ti target as the target material, and inert gas and nitrogen gas as the working gas, apply a negative bias voltage to the substrate, thereby depositing and forming the transition layer on the surface of the substrate, Among them, the target current of the Ti target is 60A-70A, the working temperature is 230-280°C, the negative bias voltage of the s...

Embodiment 1

[0071] In this embodiment, the preparation method of depositing a high-hardness nanocomposite coating by adopting the method of multi-arc ion plating, wherein the thickness of the TiAlCN layer is about 3.4 μm, mainly includes the following steps:

[0072] (1) Firstly, the parts to be plated (or Ti6Al4V) are mechanically polished, and then ultrasonicated in petroleum ether, acetone, and absolute ethanol for 20 minutes, and then cleaned with N 2 blow dry;

[0073] (2) Install and fix the dried parts (or Ti6Al4V) into the turntable, and then vacuumize to 5×10 -5 Pa, during the vacuuming process, the chamber is heated at the same time, and the heating temperature is set to 250 °C;

[0074] (3) Target sputtering and etching cleaning of the sample, the target sputtering cleaning time is set to 2min, the substrate material is subjected to Ar ion etching, the time is set to 40min, and the Ar gas flow rate is set to 35sccm, PSE set to 200V;

[0075] (4) Deposition of high-hardness n...

Embodiment 2

[0078] In this embodiment, the preparation method of depositing a high-hardness nanocomposite coating by adopting the method of multi-arc ion plating, wherein the thickness of the TiAlCN layer is about 2.1 μm, mainly includes the following steps:

[0079] (1) Firstly, the parts to be plated (or 316 stainless steel) are mechanically polished, and then ultrasonicated in petroleum ether, acetone and absolute ethanol for 20 minutes, and then cleaned with N 2 blow dry;

[0080] (2) Install and fix the dried parts (or 316 stainless steel) into the turntable, and then vacuumize to 5×10 -5 Pa, during the vacuuming process, the chamber is heated at the same time, and the heating temperature is set to 250 °C;

[0081] (3) Target sputtering and etching cleaning of the sample, the target sputtering cleaning time is set to 2min, the substrate material is etched with Ar ions, the time is set to 30min, and the Ar gas flow rate is set to 30sccm, PSE set to 200V;

[0082] (4) Deposition of ...

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Abstract

The invention discloses a high-hardness nano-composite coating as well as a preparation method and application thereof. The high-hardness nano-composite coating comprises a transition layer and a TiAlCN layer which are sequentially formed on the surface of a base body, the phase structure of the TiAlCN layer comprises a hard nano-metal phase and an amorphous phase, the amorphous phase is evenly distributed in the hard nano-metal phase, the hard nano-metal phase comprises any one or a combination of two or more of a Ti (C, N) phase, a TiN phase, a TiC phase and an AlN phase, and the amorphous phase comprises an amorphous carbon phase. The high-hardness nano-composite coating prepared by the method has high hardness and high toughness, has excellent corrosion and wear resistance in an atmospheric environment and a seawater environment, and can effectively prolong the service life of the base body; and meanwhile, the coating has a huge potential application prospect in surface protection of equipment such as marine parts and cutters.

Description

technical field [0001] The invention belongs to the technical field of material surface protection, and in particular relates to a high-hardness nanocomposite coating and a preparation method and application thereof. Background technique [0002] The ocean is rich in resources and has potentially huge economic benefits. The degree of development of the marine industry is a comprehensive reflection of a country's scientific and technological strength and level, and it is also a sign of a country's economic development and national status. The development and utilization of marine resources and comprehensive sea control capabilities must vigorously develop ship equipment and marine engineering equipment. However, the marine corrosion problem is one of the most important problems faced in the ocean development process. The harshness of the marine environment, the high salt concentration in seawater (about 3.5%), rich oxygen, and the existence of a large number of marine microo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/02C23C14/06
CPCC23C14/325C23C14/0664C23C14/0641C23C14/0635C23C14/022C23C14/0021
Inventor 刘克李金龙刘翔常可可
Owner KUNMING UNIV OF SCI & TECH
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