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High-temperature abrasion-resistant CrAlSiON based nano-composite coating and preparation method and application thereof

A nanocomposite coating, high-temperature wear-resistant technology, applied in coating, metal material coating process, superimposed layer plating, etc., can solve the problems of poor crack growth resistance and high temperature oxidation resistance, and improve crack resistance Expansion ability, simple preparation method, effect of reducing friction coefficient

Active Publication Date: 2017-05-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still a lot of problems to be solved in the promotion and application of MeSiN (Me: Ti, Cr, etc.) nanocomposites, such as poor crack growth resistance and high temperature oxidation resistance of the coating under cutting conditions.
Therefore, improving the high toughness and hardness of oxynitride coatings has become an urgent problem to be solved. At present, new CrAlSiON-based nanocomposite coatings containing oxygen and low cost have not been reported yet.

Method used

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  • High-temperature abrasion-resistant CrAlSiON based nano-composite coating and preparation method and application thereof
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  • High-temperature abrasion-resistant CrAlSiON based nano-composite coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The high-temperature and wear-resistant CrAlSiON-based nanocomposite coating includes an AlTiN transition layer, a CrAlSiN support layer and a CrAlSiON functional layer. The atomic percent content of each element in the AlTiN transition layer is: Al: 28at.%, Ti: 16at.%, N: 56at.%. The atomic percent content of each element in the CrAlSiN support layer is: Al: 23at.%, Cr: 14at.%, Si: 7at.%, N: 56at.%. The atomic percent content of each element in the CrAlSiON functional layer is: Al: 20at.%, Cr: 10at.%, Si: 12at.%, O: 5at.%, N: 53at.%.

[0036] Polish the cemented carbide, ultrasonically clean it with acetone and alcohol for 10 minutes, dry it with nitrogen, and put it into a vacuum chamber. Turn on the heater to raise the temperature to 300°C, and evacuate the vacuum chamber to a vacuum degree of 1.0×10 -3 Below Pa. Introduce 300 sccm of Ar gas, set the bias voltage of the workpiece support to -1000V, and carry out sputter cleaning on the surface of the cemented carb...

Embodiment 2

[0039] The high-temperature and wear-resistant CrAlSiON-based nanocomposite coating includes an AlTiN transition layer, a CrAlSiN support layer and a CrAlSiON functional layer. The atomic percent content of each element in the AlTiN transition layer is: Al: 27at.%, Ti: 17at.%, N: 56at.%. The atomic percent content of each element in the CrAlSiN support layer is: Al: 22 at.%, Cr: 15 at.%, Si: 6 at.%, N: 57 at.%. The atomic percent content of each element in the CrAlSiON functional layer is: Al: 25at.%, Cr: 15at.%, Si: 10at.%, O: 15at.%, N: 35at.%.

[0040] Polish the cemented carbide, ultrasonically clean it with acetone and alcohol for 15 minutes, then dry it with nitrogen and put it into a vacuum chamber. Turn on the heater to raise the temperature to 350°C, and evacuate the vacuum chamber to a vacuum degree of 5.0×10 -3 Below Pa. Introduce 250 sccm of Ar gas, set the bias voltage of the workpiece support to -800V, and carry out sputter cleaning on the surface of the cemen...

Embodiment 3

[0046] The high-temperature and wear-resistant CrAlSiON-based nanocomposite coating includes an AlTiN transition layer, a CrAlSiN support layer and a CrAlSiON functional layer. The atomic percent content of each element in the AlTiN transition layer is: Al: 28at.%, Ti: 15at.%, N: 57at.%. The atomic percent content of each element in the CrAlSiN supporting layer is: Al: 23 at.%, Cr: 15 at.%, Si: 6 at.%, N: 56 at.%. The atomic percent content of each element in the CrAlSiON functional layer is: Al: 30at.%, Cr: 20at.%, Si: 5at.%, O: 30at.%, N: 25at.%. Polish the cemented carbide, ultrasonically clean it with acetone and alcohol for 15 minutes, then dry it with nitrogen and put it into a vacuum chamber. Turn on the heater to raise the temperature to 400°C, and evacuate the vacuum chamber to a vacuum degree of 5.0×10 -3 Below Pa. Introduce 300 sccm of Ar gas, set the bias voltage of the workpiece support to -900V, and perform sputter cleaning on the surface of the cemented carbi...

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Abstract

The invention discloses a high-temperature abrasion-resistant CrAlSiON based nano-composite coating. The high-temperature abrasion-resistant CrAlSiON based nano-composite coating mainly comprises an AlTiN transition layer, a CrAlSiN supporting layer and a CrAlSiON functional layer. A multi-arc ion plating technology is adopted in the coating, and the CrAlSiON based nano-composite coating with different components can be obtained by changing technological parameters. An oxygen element is led into the CrAlSiON based nano-composite coating, the existence form of oxygen in the coating is controlled by changing the depositional condition, one or more sorts of oxide which is low in friction coefficient and resistant to abrasion can be pre-formed in the coating, and the binding force between coating bodies is increased; and meanwhile, the stress between the coating bodies and the friction coefficient under a high temperature condition are lowered, and friction resistance, abrasion resistance and thermal stability of the coating are improved, so that the coating is more suitable for a more demanding high-speed cutting and high-hardness environment, and the high-temperature abrasion-resistant CrAlSiON based nano-composite coating has great application prospects in the fields of cutters and surface protection.

Description

technical field [0001] The invention belongs to the field of material coatings, and in particular relates to a high-temperature wear-resistant CrAlSiON-based nanocomposite coating and a preparation method and application thereof. Background technique [0002] In recent years, the method of coating metal nitrides on tools, molds, mechanical parts and other products to improve the surface properties and service life of products has become a widely used surface modification technology. Coating preparation techniques mainly include chemical vapor deposition (CVD) and physical vapor deposition (PVD). However, CVD technology has a series of problems such as reactive gas will corrode equipment and environmental pollution. (PVD) technology has been developed rapidly. With the advancement of PVD technology, hard coatings have gone through the following four stages of development: (1) simple binary coatings (TiN, TiC); (2) ternary or quaternary solid solution coatings (TiAlN, TiCN, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/06
CPCC23C14/0036C23C14/0641C23C14/0676C23C14/325C23C28/044
Inventor 王启民黎海旭耿东森王成勇代伟
Owner GUANGDONG UNIV OF TECH
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