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Wear-resistant corrosion-resistant aluminum-based metal ceramic composite coating and preparation method thereof

Pending Publication Date: 2021-04-02
GUANGDONG INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with metal equipment on land, due to the characteristics of high humidity and high corrosion in the marine environment, metal workpieces tend to be more severely corroded, resulting in a rapid decline in the comprehensive mechanical properties of the workpiece, which not only increases equipment maintenance costs, but also causes equipment damage due to corrosion. Reduced strength, which in turn reduces the safety of the device
[0003] At present, the workpiece is mainly protected by surface coating. Among them, water-based coating is a relatively new anti-corrosion method. The coating composition is composed of metal functional fillers, solvents, inorganic acids, and special organic substances. It is non-toxic and environmentally friendly, and it is different from traditional electroplating. Compared with spray plating and electroless plating process, the construction technology is simple and has good adaptability to the surface of the substrate to be coated, but the coating is soft, with poor adhesion and wear resistance, and it is easy to occur during construction, installation and transportation. The anti-corrosion effect is lost due to the damage problem, and it is difficult to solve the problem of poor wear resistance of the coating only by metal functional fillers

Method used

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  • Wear-resistant corrosion-resistant aluminum-based metal ceramic composite coating and preparation method thereof
  • Wear-resistant corrosion-resistant aluminum-based metal ceramic composite coating and preparation method thereof

Examples

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Embodiment 1

[0036] An embodiment of the wear-resistant and anti-corrosion aluminum-based cermet composite coating of the present invention, the preparation method of the composite coating described in this embodiment comprises the following steps:

[0037] (1) Treating the base material: degreasing and sandblasting the surface of the 45# steel plate base material. The degreasing treatment adopts high temperature degreasing method, the degreasing temperature is 330°C, and the degreasing time is 1h; sandblasting is used for rust removal and surface activation, the sandblasting pressure is 0.3MPa, the sandblasting distance is 150mm, and the sand particle size is 180 head.

[0038] (2) Preparation of composite coating: the composite coating comprises the following components by weight: 1000 parts of aluminum dihydrogen phosphate, 1000 parts of distilled water, 20 parts of coating additive tetraethyl silicate, 30 parts of passivating agent magnesium chromate, curing agent oxidation A total of...

Embodiment 2

[0044] An embodiment of the wear-resistant and anti-corrosion aluminum-based cermet composite coating of the present invention, the preparation method of the composite coating described in this embodiment comprises the following steps:

[0045] (1) Treating the base material: degreasing and sandblasting the surface of the 304 stainless steel plate base material. Degreasing Treatment Use organic care agent to soak to remove surface grease; use sandblasting for rust removal and surface activation, with a sandblasting pressure of 0.4MPa, a sandblasting distance of 200mm, and a sand particle size of 150 mesh.

[0046] (2) Preparation of composite coating: the composite coating comprises the following components by weight: 1200 parts of aluminum dihydrogen phosphate and potassium dihydrogen phosphate altogether, wherein 800 parts of aluminum dihydrogen phosphate, 1200 parts of distilled water, 35 parts of coating additive orthosilicate 20 parts, 20 parts of passivating agent magnes...

Embodiment 3

[0051] An embodiment of the wear-resistant and anti-corrosion aluminum-based cermet composite coating of the present invention, the preparation method of the composite coating described in this embodiment comprises the following steps:

[0052] (1) Treating the base material: degreasing and sandblasting the surface of the 304 stainless steel plate base material. Degreasing Treatment Use organic care agent to soak to remove surface grease; use sandblasting for rust removal and surface activation, with a sandblasting pressure of 0.5MPa, a sandblasting distance of 200mm, and a sand particle size of 180 mesh.

[0053] (2) Preparation of composite coating: the composite coating comprises the following components by weight: 1200 parts of aluminum dihydrogen phosphate, 1000 parts of distilled water, 40 parts of coating additive tetraethyl silicate, 40 parts of passivating agent magnesium chromate, curing agent oxidation A total of 15 parts of zinc and magnesium oxide, of which the co...

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Abstract

The invention discloses a wear-resistant corrosion-resistant aluminum-based metal ceramic composite coating and a preparation method thereof, and relates to the technical field of anti-corrosion coatings. According to the composite coating, inorganic phosphate is used as a binding agent, aluminum-based metal ceramic with aluminum particles wrapped by a submicron ceramic reinforcement in an embedded mode is used as filler, and the composite coating with the functional filler of a quasi-continuous micron network structure is obtained through coating and heat treatment curing. The prepared aluminum-based metal ceramic composite coating is environmentally friendly, has excellent corrosion resistance and abrasion resistance and good weather resistance, is simple and convenient in coating process and has wide application prospects in the field of ocean engineering.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a wear-resistant and anti-corrosion aluminum-based cermet composite coating and a preparation method thereof. Background technique [0002] Ocean engineering has become a hotspot of technological development, which makes more and more metal structural materials used in ocean engineering equipment. Compared with metal equipment on land, due to the characteristics of high humidity and high corrosion in the marine environment, metal workpieces tend to be more severely corroded, resulting in a rapid decline in the comprehensive mechanical properties of the workpiece, which not only increases equipment maintenance costs, but also causes equipment damage due to corrosion. The strength is reduced, which in turn reduces the safety of the equipment. [0003] At present, the workpiece is mainly protected by surface coating. Among them, water-based coating is a relatively n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D5/38C09D7/61B05D1/02B05D1/18B05D1/28B05D3/00B05D3/02B05D5/00B05D5/08B05D7/14B05D7/24
CPCB05D1/02B05D1/18B05D1/28B05D3/002B05D3/0254B05D5/00B05D5/08B05D7/14B05D7/24C09D1/00C09D5/08C09D5/38C09D7/61
Inventor 林颖菲郑志斌王彦启路建宁郑开宏
Owner GUANGDONG INST OF NEW MATERIALS
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