Corrosion-resistant antiskid coating with aluminum matrix composite structure and preparation process thereof

An aluminum-based composite, anti-slip coating technology, applied in the direction of pressure inorganic powder coating, etc., can solve the problems of high construction requirements, poor coating quality stability, large deposition area, etc., and achieve good anti-corrosion and anti-skid performance of the coating The effect of reliable quality and simple preparation process

Inactive Publication Date: 2012-10-17
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, our country mostly adopts the composite coating system composed of adding anti-slip granules to the organic coating as the anti-slip coating, which has unstable friction coefficient, poor wear resistance, poor bonding force, release of toxic gas during construction and high temperature, and short service life. and other shortcomings
[0003] At present, metal-based anti-slip coating is one of the effective methods to solve the above problems. Using metal with sacrificial anode as the anti-slip coating substrate can play the role of anti-slip and anti-corrosion at the same time. The existing technology mainly uses traditional thermal spraying methods such as flame Spraying and arc spraying are used to prepare metal-based anti-slip coatings. The coating material is mainly aluminum alloy. For example, Chinese patent 200510013850.6 discloses a powder core wire material for preparing anti-corrosion anti-slip coatings. The metal material is oxidized during the thermal spraying process. , phase transition and other phenomena, the quality and stability of the coating is poor; there are many through-holes in the coating, and the corrosive medium can penetrate the coating to contact the substrate, forming galvanic corrosion and accelerating the corrosion of the coating, which requires sealing treatment to improve its corrosion resistance; In addition, the existing thermal spraying has a large deposition area and high construction requirements, and it is difficult to perform fixed-point repairs after the coating is damaged

Method used

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  • Corrosion-resistant antiskid coating with aluminum matrix composite structure and preparation process thereof
  • Corrosion-resistant antiskid coating with aluminum matrix composite structure and preparation process thereof
  • Corrosion-resistant antiskid coating with aluminum matrix composite structure and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In this embodiment, the powder of the zinc-aluminum corrosion-resistant bottom layer 2 is selected as zinc-aluminum powder with a zinc content of 10% by weight and a particle size distribution of 0 to 50 μm; first, brown corundum sandblasting is used for the ship substrate, and then the cold spraying conditions are controlled. The cold spraying equipment is used for spraying, the air pressure of cold spraying is 1.0Mpa, the preheating temperature is 400°C, the spraying distance is 20mm, and the spraying angle is 90°, and the zinc-aluminum corrosion-resistant bottom layer 2 with uniform layer thickness is sprayed; then choose aluminum / ceramic The powder of the anti-slip top layer 3 is aluminum powder 0~40μm, alumina powder 0~30μm, aluminum / ceramic powder with a volume ratio of alumina of 40%. Conventional cold spraying equipment is used to control the spraying conditions. The cold spraying pressure is 0.6Mpa. The preheating temperature is 400°C, the spraying distance is 2...

Embodiment 2

[0021] In this example, the composite structure corrosion-resistant and anti-slip coating in Example 1 is first destroyed, and then the corrosion-resistant and anti-slip coating is repaired by spraying. The materials and parameters used are as follows:

[0022] The coating powder is a mixed powder of aluminum powder less than 40 μm and alumina powder with a diameter of less than μm, wherein the volume ratio of aluminum oxide is 60%; using conventional portable cold spray equipment, the cold spray pressure is 0.8 MPa, and the preheating temperature is 400 ℃, the spraying distance is 20mm, and the spraying angle is 70-90 degrees; the friction coefficient test is carried out on the coating prepared by spraying repair and the neoprene plate in the dry state and wet state, and the average friction coefficient in the dry state after stabilization is 0.9316, wet state is 0.9115.

[0023] The smelting and crushing described in this embodiment is to heat and melt the raw materials to b...

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Abstract

The invention relates to a corrosion-resistant antiskid coating with an aluminum matrix composite structure and a preparation process thereof, belonging to the technical fields of surface treatment and marine corrosion prevention, wherein the coating is capable of being rapidly repaired after damage. The corrosion-resistant antiskid coating consists of a composite structure of a zinc-aluminum corrosion-resistant bottom layer and an aluminum / ceramic antiskid top layer and is prepared through the following steps: carrying out sand-blast treating on a matrix so as to allow the surface of the matrix to be free of attached foreign materials and have roughness; spraying zinc-aluminum powder onto the matrix so as to form the zinc-aluminum corrosion-resistant bottom layer which has a bonding strength of more than 15 MPa and a thickness of 150 to 250 mu m; and spraying aluminum / ceramic powder onto the zinc-aluminum corrosion-resistant bottom layer of the matrix so as to form the corrosion-resistant antiskid coating with the aluminum matrix composite structure, wherein the coating has a bonding strength of more than 15 MPa, a thickness of more than 200 mu m and a coefficient of friction with chloroprene rubber of more than 0.85. The preparation process is simple; the quality of the coating is good; spraying is easy to carry out; and the coating has good anticorrosion and antiskid performances and a long service life and can be easily and rapidly repaired.

Description

Technical field: [0001] The invention relates to an aluminum-based composite structure anti-corrosion and anti-slip coating capable of rapid repair after damage and a preparation method thereof. The coating is suitable for moving parts of personnel and equipment on metal frame platforms such as ship decks and ocean platforms in marine environments The anti-slip and anti-corrosion technology belongs to the technical field of surface treatment and marine anti-corrosion. Background technique: [0002] The application of anti-slip coatings on steel frame platforms such as ship decks and offshore platforms can effectively increase the safety of active personnel and equipment. With the increase of human marine activities and the improvement of safety awareness, higher anti-skid requirements are put forward for places where people and machinery are active. In the marine environment, anti-skid coatings are faced with extremely harsh conditions. In addition to improving the basic pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04
Inventor 邢路阔李相波黄国胜许立坤
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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