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Super wear-resistant and corrosion-resistant coating and preparation method thereof

A corrosion-resistant coating and super wear-resistant technology, applied in the coating, metal material coating process, melt spraying and other directions, can solve the problems of unsatisfactory corrosion resistance, limited preparation process, large consumption of raw materials, etc. Low cost, excellent physical and chemical properties, and long service life

Active Publication Date: 2020-02-04
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the ternary boride-based cermet has good properties such as wear resistance, corrosion resistance and high temperature resistance, it is limited by its preparation process, and generally only bulk materials can be produced, resulting in large consumption of raw materials and high production costs.
[0004] Mo 2 FeB 2 Base cermets are a typical ternary boride-based cermets, which are characterized by excellent wear resistance (Wen Yongce, Sun Junsheng, Jiao Enli, etc. Research progress of ternary boride-based surfacing alloys. Precision Forming Engineering ,2017(05):95-102.), but its corrosion resistance cannot meet the conditions of both wear and corrosion

Method used

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  • Super wear-resistant and corrosion-resistant coating and preparation method thereof

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Effect test

Embodiment 1

[0029] A super wear-resistant and corrosion-resistant coating and a preparation method thereof. The preparation method described in this embodiment is:

[0030] The chemical composition and content of the super wear-resistant and corrosion-resistant coating are: molybdenum boride powder 40-44wt%, chromium boride powder 18-25wt%, Ni60 alloy powder 32-42wt%.

[0031] According to the chemical composition and content of the super wear-resistant and corrosion-resistant coating, the mixture is mixed to obtain a mixture; the mixture is wet-milled in a ball mill until the particle size is less than 5 μm, and the mixture is heated in a vacuum drying oven at 80-100°C Drying for 36 to 48 hours under the condition to obtain the spray coating; and then spraying the spray coating on the surface of the substrate by using a spraying process to obtain a super wear-resistant and corrosion-resistant coating.

[0032] The medium of the wet grinding is absolute ethanol; the mass ratio of the gri...

Embodiment 2

[0035] A super wear-resistant and corrosion-resistant coating and a preparation method thereof. The preparation method described in this embodiment is:

[0036] The chemical composition and content of the super wear-resistant and corrosion-resistant coating are: molybdenum boride powder 44-48wt%, chromium boride powder 16-23wt%, Ni60 alloy powder 30-39wt%.

[0037] According to the chemical composition and content of the super wear-resistant and corrosion-resistant coating, the mixture is mixed to obtain a mixture; the mixture is wet-milled in a ball mill until the particle size is less than 5 μm, and the mixture is heated in a vacuum oven at 90-110°C Drying for 24 to 36 hours under the same conditions can obtain the spray paint; then, the spray paint is sprayed on the surface of the substrate by a spraying process to obtain a super wear-resistant and corrosion-resistant coating.

[0038] The medium of the wet grinding is acetone; the mass ratio of the grinding balls of the w...

Embodiment 3

[0041] A super wear-resistant and corrosion-resistant coating and a preparation method thereof. The preparation method described in this embodiment is:

[0042] The chemical composition and content of the super wear-resistant and corrosion-resistant coating are: molybdenum boride powder is 48-52wt%, chromium boride powder is 14-21wt%, and Ni60 alloy powder is 28-36wt%.

[0043] According to the chemical composition and content of the super wear-resistant and corrosion-resistant coating, the mixture is mixed to obtain a mixture; the mixture is wet-milled in a ball mill until the particle size is less than 5 μm, and the mixture is heated in a vacuum drying oven at 100-120°C Drying for 12 to 24 hours under the condition to obtain the spray paint; and then spraying the spray paint on the surface of the substrate by using a spraying process to prepare a super wear-resistant and corrosion-resistant coating.

[0044] The medium of the wet grinding is carbon tetrachloride; the mass r...

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Abstract

The invention relates to a super wear-resistant and corrosion-resistant coating and a preparation method thereof. The technical scheme adopted by the preparation method of the super wear-resistant andcorrosion-resistant coating is that the super wear-resistant and corrosion-resistant coating comprises the chemical composition and content of molybdenum boride powder 40 to 60wt%, chromium boride powder 10-25wt% and Ni 60 alloy powder 24-42wt%. According to the chemical composition and content of the super wear-resistant and corrosion-resistant coating, a mixture is obtained through proportioning and mixing; the mixture is wet ground in a ball mill until the particle size is less than 5 micrometer, the mixture is dried in a vacuum drying oven at 80 to 120 DEG C for 12 to 48 hours, then spraying materials are obtained; and then the surface of a matrix is sprayed with the spraying materials through using spraying process, and the super wear-resistant and corrosion-resistant coating is prepared. The matrix material is one of hard alloy, carbon steel, stainless steel, cast iron, iron-based alloy, nickel based alloy, cobalt-base alloy, chromium-base alloy and titanium base alloy. The super wear-resistant and corrosion-resistant coating and the preparation method thereof has the advantages of simple preparation process and low cost, the super wear-resistant and corrosion-resistant coating has the advantages of high hardness, excellent wear-resistance, good corrosion-resistance, long service life and wide range of the matrix, can meet harsh service conditions.

Description

technical field [0001] The invention belongs to the technical field of corrosion-resistant coatings. In particular, it relates to a super wear-resistant and corrosion-resistant coating and a preparation method thereof. Background technique [0002] Boride ceramics and their composite materials have become the most promising cermets due to their excellent physical and chemical properties, but because binary borides are easy to agglomerate during the sintering process and react with metals to form intermetallic compounds, thereby reducing the relative The wettability of borides leads to a decrease in the mechanical properties of binary boride-based cermets. [0003] The in-situ reaction sintering synthesis method is used to make the binary boride react with the metal to form the ternary boride, and the ternary boride-based cermet with fine and uniform boride distribution can be obtained. Although the ternary boride-based cermet has good properties such as wear resistance, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/129C23C4/126C23C4/134C23C4/12C22C29/14
CPCC23C4/06C23C4/129C23C4/126C23C4/134C23C4/12C22C29/14C22C29/005
Inventor 柯德庆潘应君吴腾
Owner WUHAN UNIV OF SCI & TECH
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