Marine life corrosion-resistant ceramic coating and preparation method thereof

A bio-corrosion and ceramic coating technology, applied in coatings, metal material coating processes, fusion spraying and other directions, can solve the problems of non-friction, non-sea biological corrosion and anti-fouling coatings, etc., to achieve low cost, high efficiency Anti-corrosion performance of marine organisms, uniform distribution effect

Inactive Publication Date: 2011-09-14
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to address the above-mentioned deficiencies in the prior art, and to provide an anti-marine coating with wear-resistant and anti-friction properties that can e...

Method used

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  • Marine life corrosion-resistant ceramic coating and preparation method thereof
  • Marine life corrosion-resistant ceramic coating and preparation method thereof
  • Marine life corrosion-resistant ceramic coating and preparation method thereof

Examples

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Embodiment 1

[0034] In order to prepare Al which is resistant to marine corrosion 2 o 3 -13%TiO 2 The first embodiment of the present invention will be described by taking the ceramic coating as an example.

[0035] Al in particle size 5-0 μm 2 o 3 -13%TiO 2 In the ceramic powder, CuO powder with a particle size of 5-5 μm is added. CuO powder accounts for 4% by volume of the mixed powder. Agglomerated and granulated by spray drying equipment, sintered, spheroidized, crushed and sieved to obtain composite ceramic powder with a particle size of 10-45 μm.

[0036]Put the stainless steel workpiece in acetone for ultrasonic cleaning for 15-0 minutes, and use 20-70 mesh corundum sand to roughen the surface of the workpiece after wiping with alcohol. Dry the composite ceramic powder and the 45-00 μm sprayed bonding transition layer with Ni-20%Cr alloy powder at 60°C-50°C, and then put the dried powder into the powder feeder.

[0037] Supersonic plasma spraying is used to bond the transiti...

Embodiment 2

[0040] The following is to prepare Cr which is resistant to marine corrosion 2 o 3 -SiO 2 -TiO 2 A ceramic coating is taken as an example to describe the second embodiment of the present invention.

[0041] In Cr with a particle size of 5-25 μm 2 o 3 -SiO 2 -TiO 2 In the ceramic powder, CuO powder with a particle size of 5-15 μm is added. CuO powder accounts for 5% by volume of the mixed powder. Agglomerated and granulated by spray drying equipment, sintered, spheroidized, crushed and sieved to obtain composite ceramic powder with a particle size of 20-45 μm.

[0042] Put the stainless steel workpiece in acetone for ultrasonic cleaning for 15-30 minutes, and use 20-70 mesh corundum sand to roughen the surface of the workpiece after wiping with alcohol. Dry the composite ceramic powder and the 45-100 μm spray-coated bonding transition layer with Ni-20%Cr alloy powder at 60°C-150°C, and then put the dried powder into the powder feeder.

[0043] The bonding transition l...

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Abstract

The invention relates to a marine life corrosion-resistant ceramic coating and a preparation method thereof. The coating is characterized by being a composite ceramic coating formed by dispersively distributing copper oxide particles in a ceramic substrate, and the thickness is 0.2 to 1 mm. By adopting the novel composite ceramic coating with wear and friction resistance and marine life corrosion resistance, which is prepared by dispersively distributing the copper oxide particles in the wear- and corrosion-resistant ceramic substrate by using a thermal spraying method, the problems that the conventional ceramic coating is not resistant to the marine life corrosion, while an anti-fouling paint is not resistant to friction are solved. The marine life corrosion-resistant ceramic coating prepared by the method provided by the invention maintains the original characteristics, such as wear resistance, high-temperature resistance, oxidant resistance and the like of the ceramic coating; meanwhile, since the copper oxide particles are added, the marine life corrosion-resistant performance of the coating is remarkably improved, and the application of the ceramic coating in the ship parts is broadened. The marine life corrosion-resistant ceramic coating has the characteristics of low cost and high efficiency, and is suitable for industrialized production.

Description

technical field [0001] A ceramic coating resistant to marine biological corrosion and a preparation method thereof relate to a method for preparing a composite ceramic coating in which copper oxide particles are dispersed in a wear-resistant and corrosion-resistant ceramic matrix by adopting thermal spraying technology. Background technique [0002] There are nearly 20,000 species of attached marine organisms in the world's oceans, which is one of the main factors affecting the corrosion behavior of ship parts in the marine environment. The macro and micro corrosion caused by the adhesion of marine organisms not only increases the surface roughness and wear failure of parts, but also reduces the service life of parts; it also increases the resistance of movement, resulting in reduced speed and increased energy consumption. [0003] Ceramic materials mostly have ionic bond and covalent bond structure, high bond energy, strong interatomic bonding, low surface free energy, smal...

Claims

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Application Information

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IPC IPC(8): C23C4/10C23C4/126C23C4/129C23C4/134
Inventor 章德铭冀晓鹃任先京于月光马江虹张鑫万伟伟国俊丰
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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