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Corrosion-resistant and wear-resistant protective coating and preparing method and application thereof

A protective coating, wear-resistant technology, applied in the direction of coating, metal material coating process, ion implantation plating, etc., can solve the problems of corrosion and wear, high corrosion resistance requirements, microbial corrosion and other problems , to achieve excellent corrosion resistance and wear resistance, enhanced corrosion resistance, and achieve the effect of carbon doping

Active Publication Date: 2020-02-11
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since seawater is a highly corrosive environment, marine equipment has high requirements for corrosion resistance of materials; in addition, key moving parts of marine equipment in marine environments are not only corroded but also worn, which is different from corrosion or corrosion alone. Compared with wear, the synergistic effect of wear and corrosion will lead to more serious equipment damage; when the moving parts are at rest, it is also necessary to consider the microorganisms in the ocean attached to the surface of the parts, biofouling will change the physical or chemical properties of the metal surface, leading to microbial corrosion

Method used

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  • Corrosion-resistant and wear-resistant protective coating and preparing method and application thereof
  • Corrosion-resistant and wear-resistant protective coating and preparing method and application thereof
  • Corrosion-resistant and wear-resistant protective coating and preparing method and application thereof

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preparation example Construction

[0025] The present invention provides a preparation method for the protective coating described in the above technical solution, comprising the following steps:

[0026] Take TaB 4 The target and the carbon target are target materials, and the protective coating is obtained by co-sputtering on the surface of the substrate by magnetron sputtering.

[0027] In the present invention, in the magnetron sputtering process, the TaB 4 The target and the carbon target are sputtered at the same time, so that the plasma released by the two targets evenly coats the surface of the substrate. In the present invention, the TaB 4 The positional relationship between the target and the carbon target and the substrate is preferably: keep the same inclination angle and distance of the substrate relative to the normal line of the two targets; the TaB 4 The target-base distance between the target and the substrate is preferably 6-8 cm, and the target-base distance between the carbon target and t...

Embodiment 1

[0038] A corrosion-resistant and wear-resistant protective coating (TaB-C coating) was deposited using a magnetron sputtering system, using a titanium sheet as a substrate, followed by ultrasonic cleaning with acetone, ethanol and distilled water for 20 min, and then drying; 4 The target (purity is 99.95%, Ta:B atomic percentage is 20%:80%) and the C target (purity is 99.95%) are respectively located at 7cm away from the substrate; keep the substrate relative to the two target normal tilt angle and The distance is the same, and the distance between the two targets is kept at 9cm; the vacuum of the coating chamber is kept at 6×10 by the turbomolecular pump before sputtering -4 Pa, and introduce 90sccm argon gas (purity is 99.99%), and keep the working pressure of 0.8Pa; During deposition, control substrate temperature is 400 ℃, and the applied bias voltage is-80V; Adopt co-sputtering method, carbon target The power of the RF power supply is 100W, TaB 4 The current of the targe...

Embodiment 2

[0040] The preparation method is basically the same as in Example 1, except that the power of the carbon target radio frequency power supply is 150W, the thickness of the TaB-C coating is 1.5 μm, and the hardness is 33.2GPa; by X-ray photoelectron spectroscopy (XPS) The Ta content in the obtained TaB-C coating is 29.2 at.%, the B content is 59.9 at.%, and the C content is 10.9 at.%.

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Abstract

The invention relates to the technical field of coating protection, in particular to a corrosion-resistant and wear-resistant protective coating and a preparation method and application thereof. The corrosion-resistant and wear-resistant protective coating includes components including, by atomic percentage, 29%-33% of tantalum, 57%-67% of boron and 3%-14% of carbon. A small amount of carbon is doped into the protective coating to form an amorphous / nanocrystalline matrix structure, wherein the thin amorphous carbon is embedded between TaB2 nanocrystals, the TaB2 grain size is limited, the coating is made denser, the corrosion resistance is enhanced, the synergistic effect between wear and corrosion is weakened, and improving of the tribological performance is realized. Meanwhile, the smallamount of carbon is added, so that the excellent antimicrobial adhesion of TaB2 can be maintained, the provided protective coating has excellent corrosion resistance and abrasion resistance, the protective coating can adapt to the harsh environment of ocean and is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of coating protection, in particular to a corrosion-resistant and wear-resistant protective coating, a preparation method and application thereof. Background technique [0002] Due to the needs of ocean development, engineering infrastructure such as ships, offshore drilling platforms, and ocean sensors have been established. These ocean-specific equipment are inevitably exposed to harsh ocean conditions, and the safety, reliability, and service life of devices depend heavily on their Protective function. Since seawater is a highly corrosive environment, marine equipment has high requirements for corrosion resistance of materials; in addition, key moving parts of marine equipment in marine environments are not only corroded but also worn, which is different from corrosion or corrosion alone. Compared with wear, the synergistic effect of wear and corrosion will lead to more serious equipment damage; when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/35
CPCC23C14/165C23C14/352
Inventor 张侃戴萱文懋郑伟涛
Owner JILIN UNIV