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Wear-resistant antifriction iron-based amorphous composite coating and preparation method thereof

An iron-based amorphous and composite coating technology, which is applied in coating, metal material coating technology, fusion spraying, etc., can solve the problems of reducing friction coefficient performance and coating can not have wear resistance, etc., to reduce Effect of friction coefficient, improvement of service life and power economy, and improvement of wear resistance

Pending Publication Date: 2020-10-16
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The coating prepared by the above-mentioned preparation method cannot have both wear resistance and friction coefficient reduction performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a wear-resistant and anti-friction iron-based amorphous composite coating, comprising the steps of:

[0024] 1. Weigh nickel-coated graphite powder or cobalt-coated graphite powder with a mass fraction of 1 to 5%, ceramic powder with a mass fraction of 1 to 10%, and iron-based amorphous powder, and mix them by ball milling to obtain a mixed powder. Dry in an oven at 80±2°C for 1 to 3 hours for later use. The ceramic powder is WC, NbC, TiC, Cr 3 C 2 , SiC, Al 2 o 3 、Cr 2 o 3 , ZrO 2 、LaO 2 , SiO 2 One of them, the iron-based amorphous powder contains iron-chromium-carbon-boron-molybdenum, wherein the atomic ratio of Fe, Cr, C, B, and Mo is 37.5:27.5:15-8:10-17:10.

[0025] 2. Clean and dry the surface of the substrate to be sprayed, and use brown corundum sandblasting to roughen the surface. The surface roughness after roughening is Ra 8.0-10.0.

[0026] 3. Spray the mixed powder on the surface of the substrate to be sprayed by using the ...

Embodiment 2

[0028] A method for preparing a wear-resistant and anti-friction iron-based amorphous composite coating, comprising the steps of:

[0029] 1. Weigh nickel-coated graphene powder or cobalt-coated graphene powder with a mass fraction of 0.5 to 10%, ceramic powder with a mass fraction of 1 to 10%, and iron-based amorphous powder, and perform ball milling and mixing to obtain a mixed powder, Dry it in an oven at 80±2°C for 1-3 hours for later use. The ceramic powder is WC, NbC, TiC, Cr 3 C 2 , SiC, Al 2 o 3 、Cr 2 o 3 , ZrO 2 、LaO 2 , SiO 2 One of them, the iron-based amorphous powder contains iron-chromium-carbon-boron-molybdenum, wherein the atomic ratio of Fe, Cr, C, B, and Mo is 37.5:27.5:15-8:10-17:10.

[0030] 2. Clean and dry the surface of the substrate to be sprayed, and use brown corundum sandblasting to roughen the surface. The surface roughness after roughening is Ra 8.0-10.0.

[0031] 3. Spray the mixed powder on the surface of the substrate to be sprayed by ...

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Abstract

The invention belongs to the field of metal coatings, and particularly relates to a wear-resistant antifriction iron-based amorphous composite coating and a preparation method thereof. The method comprises the following steps of weighing nickel-coated graphite or cobalt-coated graphite powder or nickel-coated graphene or cobalt-coated graphene powder, ceramic powder and iron-based amorphous powderaccording to a certain mass ratio, carrying out ball milling and mixing to obtain mixed powder, and drying the mixed powder for later use; roughening the substrate to be sprayed; and spraying the surface of the substrate to be sprayed in a plasma spraying mode to obtain the iron-based amorphous composite coating containing ceramic particles and graphite or graphene. According to the wear-resistant antifriction iron-based amorphous composite coating, a certain mass fraction of ceramic particles and graphite or graphene are added into the iron-based amorphous powder, so that the wear resistanceof the iron-based amorphous composite coating is enhanced, the friction coefficient is reduced, and the iron-based amorphous composite coating has a self-lubricating function and can be widely applied to surface repair and protection of parts in the fields of petroleum, chemical industry, electric power, mechanical manufacturing and the like.

Description

technical field [0001] The invention belongs to the field of metal coatings, in particular to a wear-resistant and anti-friction iron-based amorphous composite coating and a preparation method thereof. Background technique [0002] The microstructure of amorphous alloy has long-range disorder and short-range order, which makes it have high strength, high hardness and excellent wear resistance, and shows broad application prospects in the field of wear protection. Iron-based amorphous material, as one of many amorphous alloys, is a potential surface wear-resistant material because of its high cost performance and excellent wear resistance. However, because the formation of amorphous alloys requires a huge cooling rate and is limited by the preparation technology, it is difficult to process bulk amorphous alloys with large shapes and sizes, which limits the application of amorphous alloy materials in many fields. Therefore, the use of coating preparation technology to prepare...

Claims

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Application Information

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IPC IPC(8): C23C4/134C23C4/06C23C4/10C23C4/02
CPCC23C4/02C23C4/10C23C4/134
Inventor 张皓魏新龙班傲林朱无言张超
Owner YANGZHOU UNIV
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