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Dacromet coating reinforced by both MoSi2 and SiC microparticles and coating method thereof

A technology of micro-particles and coatings, which is applied to coatings, devices for coating liquids on surfaces, and pre-treated surfaces. It can solve the problems of poor wear resistance and low surface hardness, and achieve strong wear resistance and strong resistance. Abrasive, high-strength effect

Inactive Publication Date: 2020-04-17
安徽瑞合铁路紧固件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Dacromet has many advantages, it also has some shortcomings. Among them, the shortcomings in application are mainly reflected in the low surface hardness and poor wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: a kind of MoSi 2 Dacromet coating reinforced with SiC microparticles and coating method thereof

[0033] A kind of MoSi 2 And the Dacromet coating reinforced by SiC microparticles, the preparation method thereof comprises the following steps.

[0034] (1) Add MoSi 2 Preparation of metal mixed powder with SiC microparticles

[0035] The aluminum powder, zinc powder, MoSi 2 Micro particles and SiC micro particles have a fineness of 1400-1600 mesh.

[0036] 18 parts by weight of aluminum powder, 75 parts by weight of zinc powder, 1.8 parts by weight of MoSi 2 The microparticles and 3 parts by weight of SiC microparticles were put into a resonant acoustic mixer, and processed for 400s under the conditions of frequency 70Hz and amplitude 2mm, to obtain mixed powder for later use.

[0037] (2) Add MoSi 2 Preparation of metal paste with SiC microparticles

[0038] The wetting agent is one of polyethylene glycol 400, ethanol, n-propanol, isopropanol, 2-met...

Embodiment 2

[0058] Embodiment 2: a kind of MoSi 2 Dacromet coating reinforced with SiC microparticles and coating method thereof

[0059] A kind of MoSi 2 and SiC microparticle-reinforced dacromet coatings, the MoSi 2 The preparation method of the dacromet coating reinforced with SiC microparticles comprises the following steps:

[0060] Step 1: the aluminum powder of 16 parts by weight, the zinc powder of 72 parts by weight, the MoSi of 1.5 parts by weight 2 Microparticles and 2.5 parts by weight of SiC microparticles are resonantly mixed to obtain a mixed powder;

[0061] Step 2: ultrasonically mix 70 parts by weight of the mixed powder, 25 parts by weight of a wetting agent and 1.0 parts by weight of a dispersant to obtain a metal slurry; the wetting agent is polyethylene glycol 400, ethanol and n-propylene Alcohol is composed according to the mass ratio of 1:1:1; the dispersant is polyoxyethylene octylphenol ether-10, styrene ethyl polyoxyethylene ether and nonylphenol polyoxyethy...

Embodiment 3

[0080] Embodiment 3: a kind of preparation method of potato chips with low oil content

[0081] A kind of MoSi 2 and SiC microparticle-reinforced dacromet coatings, the MoSi 2 The preparation method of the dacromet coating reinforced with SiC microparticles comprises the following steps:

[0082] Step 1: the aluminum powder of 20 parts by weight, the zinc powder of 77 parts by weight, the MoSi of 2.0 parts by weight 2 Microparticles and 4.0 parts by weight of SiC microparticles are resonantly mixed to obtain a mixed powder;

[0083] Step 2: ultrasonically mix 75 parts by weight of the mixed powder, 30 parts by weight of a wetting agent and 1.5 parts by weight of a dispersant to obtain a metal slurry; the wetting agent is n-propanol, 2-methyl- 1-propanol is composed according to the mass ratio of 1:5; the dispersant is composed of polyoxyethylene octylphenol ether-10 and nonylphenol polyoxyethylene ether according to the mass ratio of 1:1.2;

[0084] Step 3: 45 parts by wei...

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Abstract

The invention relates to a Dacromet coating reinforced by both MoSi2 and SiC microparticles. A preparation method for the Dacromet coating comprises the following steps: mixing aluminum powder, zinc powder, MoSi2 microparticles and SiC microparticles through acoustic resonance to obtain mixed powder; subjecting the mixed powder, a wetting agent and a dispersing agent to ultrasonic mixing to obtainmetal slurry; and mixing the metal slurry, water-soluble silicate, borate, polytetrafluoroethylene, a silane coupling agent, a magnesium salt, potassium titanate, a passivating agent, an auxiliary agent and deionized water, carrying out stirring for 60 to 90 min at room temperature at a rotating speed of 60 to 100 r / min, and then carrying out standing for 30 to 60 min in a water bath environmentwith a constant temperature of 38 to 42 DEG C so as to obtain the Dacromet coating reinforced by both the MoSi2 and SiC microparticles. After the Dacromet coating reinforced by both MoSi2 and SiC microparticles prepared by the invention coats the surface of steel, a coating layer formed on the surface of the steel has stronger wear resistance than common Dacromet.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment and relates to a MoSi 2 Dacromet coating reinforced with SiC microparticles and coating method thereof. Background technique [0002] Dacromet is the transliteration of dacromet, also known as zinc-aluminum coating, which is a new type of anti-corrosion coating with zinc powder, aluminum powder, chromic acid and deionized water as the main components. Dacromet technology is a surface coating technology with simple process and good anti-corrosion effect. As a new surface treatment technology, Dacromet technology is a "green electroplating" compared with the traditional electroplating process, which has the following advantages: stronger corrosion resistance, no hydrogen embrittlement, high heat resistance, bonding and penetration Good performance, non-polluting process, etc. Therefore, Dacromet has been widely used in various industries such as automobiles, bridges, electric powe...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/61B05D1/18B05D3/00B05D3/02B05D7/16
CPCB05D1/18B05D3/002B05D3/0254B05D7/16C09D1/00C09D7/61
Inventor 刘卫国蔡辉梁军丁丽冰杨新
Owner 安徽瑞合铁路紧固件科技有限公司
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