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Multicomponent nitride hard coating, preparation method of multicomponent nitride hard coating and application of multicomponent nitride hard coating

A hard coating and nitride technology, applied in the field of material science and engineering, can solve problems such as poor thermal stability, achieve the effects of reducing the friction coefficient, compensating for the deterioration of oxidation resistance, and excellent comprehensive performance

Active Publication Date: 2019-11-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of a single alloying element has certain limitations on the improvement of coating properties, for example, the addition of excessive Cr will lead to poor thermal stability.

Method used

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  • Multicomponent nitride hard coating, preparation method of multicomponent nitride hard coating and application of multicomponent nitride hard coating
  • Multicomponent nitride hard coating, preparation method of multicomponent nitride hard coating and application of multicomponent nitride hard coating
  • Multicomponent nitride hard coating, preparation method of multicomponent nitride hard coating and application of multicomponent nitride hard coating

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The cemented carbide substrate (WC-8wt.%Co-4wt.%TiC) was polished, then ultrasonically cleaned with acetone and absolute ethanol for 60 minutes, dried with general nitrogen, and then placed on a vacuum chamber tray. Turn on the heater to raise the temperature to 350°C, turn on the vacuum system during the heating process, and evacuate the chamber to a vacuum degree of 5×10 -3 Below Pa. Introduce Ar gas, adjust the chamber pressure to 0.55Pa, perform high-energy beam ion etching cleaning on the substrate, close the Ar gas valve, and inject N 2 The gas flow rate is 300 sccm, and the control chamber pressure is 3Pa. Adjust the bias voltage of the workpiece turret to -100V, and ignite the Ti 40 Al 50 Cr 10 For the alloy target, set the target current to 80A, deposit for 60 minutes, and prepare Ti on the surface of the cemented carbide substrate 0.42 Al 0.47 Cr 0.11 N hard coating (labeled TiAlCrN).

Embodiment 2

[0037] The difference from Example 1 is that the alloy target is Ti 30 Al 50 Cr 10 Ta 10 target, the prepared coating is Ti 0.34 Al 0.48 Cr 0.11 Ta 0.07 N (marked as TiAlCrTaN).

Embodiment 3

[0039] The difference from Example 1 is that the alloy target is Ti 20 Al 20 Cr 20 Ta 20 W 20 target, the prepared coating is Ti 0.20 Al 0.20 Cr 0.20 Ta 0.20 W 0.20 N (marked as TiAlCrTaWN).

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Abstract

The invention belongs to the field of surface protective coating materials, and discloses a multicomponent nitride hard coating, a preparation method of the multicomponent nitride hard coating and application of the multicomponent nitride hard coating. The multicomponent nitride hard coating comprises a (TiAlCrTaW) N layer, wherein the (TiAlCrTaW) N layer in a columnar crystal growth structure; and the chemical formula of the (TiAlCrTaW) N layer is (TiaAlbCrcTadWe)N, wherein the summary of a, b, c, d and e is equal to 1, either a or b is greater than or equal to 0.2 but less than or equal to 0.5, and c, d or e is greater than or equal to 0 but less than or equal to 0.2. The multicomponent nitride hard coating has the advantages that the multicomponent nitride hard coating has the properties of excellent high-temperature structure, mechanical stability, inoxidizability and wear resistance; the multicomponent nitride hard coating has a harness number of 30-40 Gpa, and an elasticity modulus of 400-500 Gpa in a deposition state; and the multicomponent nitride hard coating has a harness number of 35-45 GPa and a elasticity modulus of 450-550 GPa under the temperature of 900 DEG C.

Description

technical field [0001] The invention belongs to the field of material science and engineering technology, and more specifically relates to a multi-component nitride hard coating and its preparation method and application. Background technique [0002] With the rapid development of modern cutting technology, especially high-speed cutting and dry cutting, higher requirements are put forward for the performance and service environment of cutting tools. The coated tool combines the advantages of high hardness, high wear resistance, low friction coefficient of the surface coating and high toughness and high strength of the matrix, which greatly improves the cutting performance of the tool and improves the processing efficiency. At the same time, the coating material acts as a chemical barrier. And heat barrier, reducing the diffusion and chemical reaction between the tool and the workpiece, thereby reducing tool wear and prolonging the service life of the tool, has become the cen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/06
CPCC23C14/0021C23C14/0641C23C14/325
Inventor 许雨翔彭滨王启民张权
Owner GUANGDONG UNIV OF TECH
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