Seawater-corrosion-resistant hard coating and preparation method thereof

A hard coating, seawater-resistant technology, used in coatings, metal material coating processes, ion implantation plating, etc., can solve the problem of weakened impact resistance, reduced hardness and toughness of coatings, and scratch resistance Insufficient rubbing ability and other problems, to achieve the effect of enhancing corrosion resistance, compact structure and convenient industrial production

Active Publication Date: 2016-07-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, studies have found that when the ceramic coating forms an amorphous structure, the hardness and toughness of the coating will decrease, and the decrease in hardness will lead to insufficient scratch resistance of the coating; When cracks are generated, the cracks will penetrate to the bottom, affecting the corrosion resistance of the coating

Method used

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  • Seawater-corrosion-resistant hard coating and preparation method thereof
  • Seawater-corrosion-resistant hard coating and preparation method thereof
  • Seawater-corrosion-resistant hard coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Choose polished 304 stainless steel as the substrate, first clean it, then put it into 60% detergent solution, saturated with Na 2 CO 3 Solution, acetone, absolute ethanol, and deionized water were ultrasonically cleaned for 20 minutes, and then dried in a drying oven at a temperature of 100 ° C for 2 hours. Put the cleaned substrate on the rotatable sample stage in the vacuum chamber, and use plasma glow to etch and clean it for 15 minutes. When the chamber vacuum is less than 1×10 -5 Pa, rush into Ar gas and adjust the sputtering pressure to 0.7Pa, select the composition as Ti 45 B 55 target, adjust the power density of the target to 4.5W / cm 2 , and apply a bias of -20V to the substrate and heat at 200°C, then open the baffle, and deposit on the main surface of the substrate for 200min to obtain a composition of Ti 100-x B x , X = 55 hard coating. The coating thickness is 4 μm. Such as figure 1 (a) As shown in the XRD pattern, the coating has an amorphous str...

Embodiment 2

[0051] Choose polished 304 stainless steel as the substrate, first clean it, then put it into a 30% detergent solution, and saturate it with Na 2 CO 3 Solution, acetone, absolute ethanol, and deionized water were ultrasonically cleaned for 10 minutes, and then dried in a drying oven at a temperature of 100 ° C for 2 hours. Put the cleaned substrate on the rotatable sample stage in the vacuum chamber, and use plasma glow to etch and clean it for 20 minutes. When the chamber vacuum is less than 1×10 -5 Pa, rush into Ar gas and adjust the sputtering pressure to 0.3Pa, select the composition as Ti 50 B 50 target, adjust the power density of the target to 5.5W / cm 2 , and the substrate was grounded and heated at 100°C, then the baffle was opened, and the main surface of the substrate was deposited for 120min, and the obtained composition was Ti 100-x B x Hard coat, X=50. Coating thickness 2 μm. The coating has an amorphous structure. The coating is dense with a density of 4...

Embodiment 3

[0053] Choose polished 304 stainless steel as the substrate, first clean it, then put it into a 30% detergent solution, and saturate it with Na 2 CO 3 Solution, acetone, absolute ethanol, and deionized water were ultrasonically cleaned for 15 minutes, and then air-dried in a drying oven at a temperature of 100 °C for 2 hours. Put the cleaned substrate on the rotatable sample stage in the vacuum chamber, and use plasma glow to etch and clean it for 20 minutes. When the chamber vacuum is less than 1×10 -5 Pa, rush into Ar gas and adjust the sputtering pressure to 0.3Pa, select the composition as Ti 42 B 58 target, adjust the power density of the target to 5.0W / cm 2 , and the substrate was biased at -10V and heated at 150°C, then the baffle was opened, and the main surface of the substrate was deposited for 300min to obtain a composition of Ti 100-x B x , X = 58 hard coating. The coating thickness is 5 μm. The surface roughness is Ra≦13nm. The coating has an amorphous st...

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Abstract

The invention discloses a seawater-corrosion-resistant hard coating.The hard coating is composed of Ti100-xBx, wherein x is equal to 50-60 and refers to atom ratio.The hard coating is of an amorphous structure is compact, and density is 4.6-5.1 g/cm3.The invention further discloses a preparation method of the hard coating.The hard coating with the special structure is obtained by adopting a magnetron sputtering method and accurately controlling process parameters.The hard coating has excellent resistance to seawater corrosion and high tenacity and hardness, and can be used for improving corrosion resistance of the surface of each stressed part in ocean equipment and prolonging service life of each part.

Description

technical field [0001] The invention relates to the field of ceramic coatings, in particular to a hard coating resistant to seawater corrosion and a preparation method thereof. Background technique [0002] The ocean covers about 71% of the earth's surface. Navigation and marine industries have become an important pillar of the world's economic development. For example, ocean transportation accounts for 90% of global trade capacity, various offshore oil and gas drilling platforms, and new energy offshore wind power generation. However, the corrosion of seawater often destroys and scraps various infrastructures and industrial equipment. According to statistics, the annual loss due to corrosion in various countries is about 3% to 5% of the GDP of each country, and the annual loss due to corrosion is as high as 2.6 to 5 trillion yuan. In particular, the corrosion of stress-bearing components in marine equipment due to the dual effects of stress and seawater is more serious. D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/02C23C14/06
CPCC23C14/021C23C14/022C23C14/067C23C14/35
Inventor 黄峰徐相英李朋谷文翠
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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