Similar coating shell texture type anti-corrosion wear-resistant composite coating and preparation method thereof

A composite coating and cladding technology, which is applied in coating, metal material coating process, transportation and packaging, etc., can solve the problems of complex process, thin thickness, high cost, etc., and achieve simple process operation, improved wear resistance, The effect of strong bearing capacity

Active Publication Date: 2018-06-05
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, there are still some problems in the preparation of cladding-like textured coatings, such as single technology, complex process, high cost, thin thickness, and low bonding strength with the substrate.

Method used

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  • Similar coating shell texture type anti-corrosion wear-resistant composite coating and preparation method thereof

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preparation example Construction

[0019] The preparation method of the above-mentioned cladding texture structure anti-corrosion and wear-resistant composite coating, the steps are:

[0020] (1) Substrate pretreatment: After removing the oxide layer with a grinding wheel, the surface of the substrate is polished with sandpaper until it is smooth and bright, then cleaned with acetone and absolute ethanol to remove oil stains, and finally dried for later use;

[0021] (2) Composite coating mixing: Weigh the nickel-based alloy powder, the preset amount of hard particles and GO solution respectively, put them in a beaker and stir them evenly, then put them in an evaporating dish, and put them in a muffle furnace Dry, and finally grind and mix evenly with a ball mill;

[0022] (3) Preparation of prefabricated layer: pre-coat a layer of nickel-based alloy powder prepared with a binder on the surface of the substrate as a transition layer, with a thickness of 0.5~2mm, and then evenly coat the composite powder with a ...

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Abstract

The invention relates to a similar coating shell texture type anti-corrosion wear-resistant composite coating and a preparation method thereof. The coating consists of a similar coating shell texturecompounding region, a metallurgy fusion transition region and a diffusion influence region; the thickness is adjustable in a range being 2 to 5mm; the similar coating shell texture compounding regionis uniformly distributed between a spherical alloy region by fine and uniform hard phase particles; alloy is positioned among hard particles; almost continuous and irregularly distributed GO thin sheets also exist for forming a coating shell surrounding an alloy region. The preparation method comprises the following steps of (1) substrate pretreatment; (2) composite powder mixing: putting GO, hardparticles and nickel-based alloy powder into distilled water; performing stirring and uniform mixing to obtain the coating composite powder; (3) coating layer coating: before the coating of the mixedpowder, coating the nickel-based alloy powder on the surface of the metal substrate to be used as a transition layer; (4) similar coating shell texture type coating layer sintering: putting a pre-firing element into a vacuum sintering furnace; raising the temperature; performing heat insulation for 5 to 45 minutes; performing cooling from the furnace to 150 DEG C, discharging; performing air cooling to room temperature to obtain the coating.

Description

technical field [0001] The invention belongs to the surface treatment technology of metal materials, and relates to the preparation technology of a corrosion-resistant and wear-resistant nickel-based composite coating. Background technique [0002] Nickel-based composite powder has good process formability, corrosion and wear resistance, and high temperature resistance, and is widely used in various coating preparation methods. Due to the composition, content and coating forming method of nickel-based composite powder The difference will greatly affect the final structure and morphology of the coating, thus affecting the corrosion resistance and friction resistance of the coating. In the friction and wear test, the general coating peels off in a large area on the surface of the sample, and produces a large number of furrows along the friction direction, especially under harsh conditions such as high temperature, high pressure, high speed, heavy load, etc., the wear is intens...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F1/00
CPCC23C24/103B22F1/105
Inventor 杨贵荣高大文宋文明朱子博马颖李亚敏
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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