Method for improving corrosion resistance of amorphous coating and application thereof

An amorphous coating, corrosion resistance technology, applied in the direction of coating, surface reaction electrolytic coating, metal material coating process, etc., can solve the problems of unevenness, weak bonding interface, weak passivation film, etc. Generate and homogenize, reduce weak points, low cost effect

Active Publication Date: 2020-02-04
山东佳倍德金属科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the object of the present invention is to provide a method that can improve the weak and uneven passivation film at the surface defect of the amorphous coating and the problem of a large number of weak bonding interfaces between particles, and improve the long-term durability of the amorphous coating. The treatment method of amorphous coating with anti-corrosion and wear resistance

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  • Method for improving corrosion resistance of amorphous coating and application thereof
  • Method for improving corrosion resistance of amorphous coating and application thereof
  • Method for improving corrosion resistance of amorphous coating and application thereof

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Embodiment 1

[0034] This embodiment provides a treatment method for an amorphous coating and its corrosion resistance has been tested. The specific steps are as follows:

[0035] (1) Substrate treatment: use ultrasonic acetone to clean the substrate (carbon steel) to remove the oil on the surface, then use brown corundum with a particle size of 400 mesh to sandblast the substrate to remove the oxide skin on the surface of the substrate and increase the roughness;

[0036] (2) Coating preparation: use amorphous alloy powder Fe prepared by gas atomization 48 Cr 15 Mo 14 C 15 B 6 Y 2 (25 ~ 45μm) as a spraying raw material. figure 1 is the SEM topography of the amorphous alloy powder, from figure 1 It can be seen that most of the powders are spherical, and the sphericity is high, only a few have satellite organization, which ensures the fluidity of the powder during the spraying process. The JP-5000 supersonic flame spraying equipment of Praxair-TAFA was used to prepare an amorphous coa...

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Abstract

The invention relates to the technical field of amorphous coatings, and particularly discloses a method for improving corrosion resistance of an amorphous coating and application of the method. The method for improving the corrosion resistance of the amorphous coating is characterized in that passivation films are formed through pre-polarization treatment of the amorphous coating, wherein the amorphous coating is prepared by a thermal spraying mode, and the porosity of the amorphous coating is less than 0.6%. On the basis of not adopting an external hole sealing material, a forced pre-polarization method is adopted to force up the further passivation of the passivation films, and the problems of the weak bonding interface of the amorphous coating and weak and non-uniform passivation filmsat the defect positions and the positions near the defect positions are solved; and the generation and homogenization of the passivation films at the positions are promoted, the weak positions which are easy to preferentially corrode are reduced, and the purpose of improving the long-term corrosion resistance of the amorphous coating is achieved. The method is easy and convenient to implement, thecost is low, and the method is suitable for industrial popularization.

Description

technical field [0001] The invention relates to the technical field of amorphous coatings, in particular to a method and application for improving the corrosion resistance of amorphous coatings. Background technique [0002] The exploitation of marine resources is an important way to improve the overall competitiveness of the economy. A large number of marine facilities, such as cross-sea bridges, ships, port facilities, and offshore platforms, have promoted the development of the marine economy. In the complex marine environment, the corrosion of marine facilities has become an important factor that hinders the development of marine resources, reduces the reliability and life of equipment, and affects construction safety. In order to protect marine facilities from erosion caused by the marine environment, a protective layer is usually applied to the surface of the equipment. At present, the protective layer is mainly divided into two types: organic coating protective laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06C23C4/18C25D11/00C22C45/02
CPCC23C4/129C23C4/06C23C4/18C25D11/00C22C45/02
Inventor 周正余文锦贺定勇谈震郭星晔吴旭王国红王曾洁邵蔚崔丽
Owner 山东佳倍德金属科技有限公司
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