Matrix with enhanced bonding strength of surface coating and preparation method of matrix

A combination of strength and surface coating technology, applied in the direction of coating, superimposed layer plating, metal material coating process, etc., can solve the problems of scratching the surface of other workpieces, peeling off the coating substrate, and increasing the brittleness of the coating, etc. Achieve the effect of enhancing heat insulation effect, improving wear resistance and reducing thermal deformation

Inactive Publication Date: 2018-03-06
JIANGSU UNIV
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Problems solved by technology

It can basically meet the requirements for surface properties under normal working conditions, but for some industries with high working conditions, such as aerospace, hard coatings will not only increase the brittleness of the coating while bringing high hardness, resulting in coating The substrate layer is easy to fall off, and it will scratch the surface of other workpieces, causing serious wear

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  • Matrix with enhanced bonding strength of surface coating and preparation method of matrix

Examples

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specific Embodiment 1

[0026] A substrate with enhanced bonding strength of surface coating, the substrate material is YT15 cemented carbide, and the coating materials are TiC and MoS , The deposition method is ion plating soft coating + chemical vapor deposition hard coating. Concrete preparation steps are as follows:

[0027] (1) Pretreatment: Polish the YT15 cemented carbide substrate material to the mirror surface, remove the surface contamination layer, put it in alcohol and acetone in turn, ultrasonically clean it for 20 minutes each, remove the surface sweat and oil, and dry it fully.

[0028] (2) Use a pulse laser to texture the surface of the base material, and use laser processing to form a concave-convex composite texture morphology; the laser processing parameters are: pulse width 1400μm, pumping voltage 380V, pulse frequency 5Hz, defocus amount 0mm, scan rate 2.5mm / s, auxiliary gas is air, gas pressure 0.5MPa.

[0029] (3) Deposition of TiC: Put the textured substrate on the fixture ...

specific Embodiment 2

[0032] A substrate with enhanced surface coating bonding strength, the substrate material is 45 steel, and the coating materials are TiAlN and TaS 2 , The deposition method is ion plating soft coating + magnetron sputtering hard coating. Concrete preparation steps are as follows:

[0033] (1) Pretreatment: Polish the 45 steel base material to the mirror surface, remove the surface contamination layer, put it in alcohol and acetone in turn, ultrasonically clean it for 20 minutes each, remove the surface sweat and oil, and dry it fully.

[0034] (2) Use a pulse laser to texture the surface of the base material, and use laser processing to form a concave-convex composite texture morphology; the laser processing parameters are: pulse width 1000 μm, pumping voltage 320V, pulse frequency 8Hz, defocus amount 0mm, scan rate 3.0mm / s, auxiliary gas is argon, gas pressure 1.0MPa.

[0035] (3) Deposition of TiAlN: Ar is used as the working gas of the sputtering ion source, and the Ar io...

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Abstract

The invention discloses a matrix with the enhanced bonding strength of a surface coating and a preparation method and belongs to the technical field of machine manufacturing. The preparation method comprises the following steps: carrying out main friction on a matrix material, microtexture composite morphology on the worn surface and active treatment of a coating; coating with a hard coating and then texturing the surface of the hard coating on the texture morphology in a vertical corresponding mode; and finally, coating with a soft coating. According to a composite coating disclosed by the invention, the antifriction and antiwear properties of the matrix surface are enhanced; and by correspondingly superposing a dual-layer texture, the bonding strength between the coating and the matrix as well as between the coatings are improved, and the service life of the matrix is prolonged.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a substrate with enhanced bonding strength of a surface coating and a preparation method thereof. Background technique [0002] In the field of mechanical manufacturing, the ubiquitous friction will lead to wear or breakage of parts, and the heat generated by friction and plastic deformation will accelerate the occurrence of this phenomenon. Wear, corrosion and lubricity properties of metal surfaces are critical. Coating technology is widely used due to its significant protective effect. [0003] At present, physical or chemical vapor deposition methods are usually used to prepare hard coatings on the surface of metal materials to improve the hardness and wear resistance of the surface. It can basically meet the requirements for surface properties under normal working conditions, but for some industries with high working conditions, such as aerospac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/32C23C14/35C23C14/32C23C14/06C23C14/02C23C28/04B23K26/00
Inventor 符永宏李海波李勇军康正阳邹国文钟行涛黄婷王浩郑峰
Owner JIANGSU UNIV
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