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Preparation method of nonferrous alloy anti-corrosion layer

A technology of non-ferrous alloys and anti-corrosion coatings, applied in metal material coating technology, coatings, surface reaction electrolytic coatings, etc., to reduce surface gaps, overcome surface pinholes, and enhance bonding strength

Active Publication Date: 2020-04-21
八龙应用材料科技(海南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional aluminum alloy surface treatment technology can cope with the daily use environment, but in the humid (polluted) environment, further strengthening treatment is still required
There are still pores and continuous lines on the surface of the aluminum alloy after oxidation, which is not allowed under the requirements of high reliability

Method used

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  • Preparation method of nonferrous alloy anti-corrosion layer
  • Preparation method of nonferrous alloy anti-corrosion layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a nonferrous alloy anticorrosion layer: comprising the following steps:

[0020] S1. The sol-gel solution includes the following raw materials in parts by weight: 20 parts of ethyl silicate, 15 parts of ethanol, 13 parts of silicon dioxide, 3 parts of graphite particles, 5 parts of zinc sulfide particles, and 100 parts of water. The particle size of zinc sulfide is 0.1μm, the particle size of zinc sulfide is 0.05μm, and the water is deionized water;

[0021] S2. Preparation of sol: mix ethanol with water, adjust the pH value of the system to 4, then perform magnetic stirring at a magnetic stirring speed of 300 rpm and a temperature of 20°C, then add ethyl silicate and silicon dioxide, and stir for 1 hour;

[0022] S3. Preparation of sol-gel solution: adding graphite particles and zinc sulfide particles under the action of magnetic stirring for stirring, the magnetic stirring rate is 500rpm, the temperature is 50°C, and the stirring is continued fo...

Embodiment 2

[0026] A method for preparing a nonferrous alloy anticorrosion layer: comprising the following steps:

[0027] S1. The sol-gel solution includes the following raw materials in parts by weight: 60 parts of ethyl silicate, 45 parts of ethanol, 19 parts of silicon dioxide, 15 parts of graphite particles, 20 parts of zinc sulfide particles, and 240 parts of water. The particle size of zinc sulfide is 0.3μm, the particle size of zinc sulfide is 0.15μm, and the water is deionized water;

[0028] S2. Preparation of sol: mix ethanol with water, adjust the pH value of the system to 6, and then perform magnetic stirring at a magnetic stirring speed of 800 rpm and a temperature of 80° C., then add ethyl silicate and silicon dioxide, and stir for 3 hours;

[0029] S3. Preparation of sol-gel solution: adding graphite particles and zinc sulfide particles under the action of magnetic stirring, the magnetic stirring rate is 1000rpm, the temperature is 120°C, and the stirring is continued for ...

Embodiment 3

[0033] A method for preparing a nonferrous alloy anticorrosion layer: comprising the following steps:

[0034] S1. The sol-gel solution includes the following raw materials in parts by weight: 40 parts of ethyl silicate, 30 parts of ethanol, 16 parts of silicon dioxide, 9 parts of graphite particles, 13 parts of zinc sulfide particles, and 170 parts of water. The particle size of zinc sulfide is 0.2μm, the particle size of zinc sulfide is 0.10μm, and the water is deionized water;

[0035] S2. Preparation of sol: mix ethanol with water, adjust the pH value of the system to 5, and then perform magnetic stirring at a magnetic stirring speed of 500 rpm and a temperature of 50° C., then add ethyl silicate and silicon dioxide, and stir for 2 hours;

[0036] S3. Preparation of sol-gel solution: adding graphite particles and zinc sulfide particles under the action of magnetic stirring, stirring at a magnetic stirring rate of 700 rpm, at a temperature of 80° C., and continuously stirri...

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Abstract

The invention provides a preparation method of a nonferrous alloy anti-corrosion layer. The preparation method comprises the following steps of raw material proportioning of a sol-gel solution, sol preparing, preparing of the sol-gel solution, film layer dipping and film layer drying. According to the method, sol-gel solution hole sealing is carried out on the porous microarc oxidization film, aneven film layer is obtained, surface clearances are reduced, binding force and smoothness are better, the coverage rate of a ceramic layer after nonferrous alloy oxidization is improved, the functionof hole sealing is achieved, the anti-friction function is also achieved, and the defects of surface needle holes, cracks and the like are overcome.

Description

technical field [0001] The invention relates to the field of metal anticorrosion, in particular to a method for preparing a nonferrous alloy anticorrosion layer. Background technique [0002] Metal rusting is the most common form of corrosion. During corrosion, a chemical or electrochemical heterogeneous reaction occurs at the interface of the metal, turning the metal into an oxidized (ion) state. This will significantly reduce the mechanical properties of metal materials such as strength, plasticity, and toughness, destroy the geometry of metal components, increase wear between parts, deteriorate electrical and optical physical properties, and shorten the service life of equipment. According to statistics, due to metal corrosion every year The resulting steel loss accounts for about 10-20% of the steel production in the year. [0003] Non-ferrous metals such as aluminum, magnesium and their alloys are more easily oxidized in nature due to their high metal activity. The co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C23C18/12
CPCC23C18/1204C23C18/1254C23C18/1262C25D11/026C25D11/04
Inventor 张生国岳建设符裕桑李祯张生贤王德波秦人斌
Owner 八龙应用材料科技(海南)有限公司
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