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Imitation shell multi-arch structure nanocomposite coating, its preparation method and application

A technology of nano-composite coating and arched structure is applied in coating, metal material coating process, vacuum evaporation coating and other directions to achieve the effects of low friction coefficient, low cost, simple and controllable preparation process

Active Publication Date: 2022-04-19
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

The industry generally agrees that it is challenging to prepare multifunctional integrated biomimetic coatings with obvious biological structures under the current environmental conditions.

Method used

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  • Imitation shell multi-arch structure nanocomposite coating, its preparation method and application
  • Imitation shell multi-arch structure nanocomposite coating, its preparation method and application
  • Imitation shell multi-arch structure nanocomposite coating, its preparation method and application

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preparation example Construction

[0042] Further, the preparation method includes: based on the minimum surface Gibbs free energy theory and first-principles kinetic numerical simulation of the growth process of the metal seed layer to guide the growth of the metal seed layer and build a multi-arch structure. Wherein, the soft metal phase and the hard nano-ceramic phase are regularly and alternately deposited on the nanometer scale in the multi-arch structure, so as to realize the controllable directional deposition in the whole deposition process of the coating.

[0043] Further, the preparation method includes:

[0044] Based on the Gibbs-Thomson effect and Ostwald theory, using soft metals to achieve controlled deposition of discontinuous metal seed layers, which can be compared to the structure of spherulite calcite in nacre; and

[0045] Based on the Gibbs-Thomson effect and Ostwald theory, the soft metal and hard nano-ceramic phases are regularly and alternately deposited on the discontinuous metal seed ...

Embodiment 1

[0089] Embodiment 1 A kind of preparation method based on the induction of metal seed layer to construct the nano-composite coating of imitation conch multi-arch structure adopts physical vapor deposition technology, which mainly includes the following steps:

[0090] (1) Perform mechanical grinding and polishing on the surface of the titanium alloy sample to be plated to remove oil, impurities and rust on the surface, and finally ensure that the surface roughness Ra is 2.5 μm to 3.5 μm, and then perform ultrasonic cleaning with acetone and alcohol respectively 2 times, each ultrasound time is 15min.

[0091] (2) Put the cleaned sample into the cavity of the vacuum coating equipment, and evacuate to a vacuum degree of 4×10 -5 mbar, while heating, the heating temperature is 450°C.

[0092] (3) Target sputtering and sample etching. In the target cleaning stage, baffles are required to block and protect the cavity, and the cleaning time is 2-5 minutes. Perform ion etching on t...

Embodiment 2

[0098] Embodiment 2 A kind of preparation method based on the induction of metal seed layer to construct the multi-arch structure nano-composite coating of imitation conch, adopts physical vapor deposition technology, and it mainly comprises the following steps:

[0099] (1) Perform mechanical grinding and polishing on the surface of the titanium alloy sample to be plated to remove oil, impurities and rust on the surface, and finally ensure that the surface roughness Ra is 2.5 μm to 3.5 μm, and then perform ultrasonic cleaning with acetone and alcohol respectively 2 times, each ultrasound time is 15min.

[0100] (2) Put the cleaned sample into the cavity of the vacuum coating equipment, and evacuate to a vacuum degree of 4×10 -5 mbar, while heating, the heating temperature is 400°C.

[0101] (3) Target sputtering and sample etching. In the target cleaning stage, baffles are required to block and protect the cavity, and the cleaning time is 2-5 minutes. Ion etching was perfo...

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Abstract

The application discloses a shell-like multi-arch structure nanocomposite coating, its preparation method and application. The preparation method includes: adopting vacuum coating technology to construct a discontinuous metal seed layer; and using the discontinuous metal seed layer to induce the deposition of a continuous multi-arch structure layer, thereby realizing a shell-like multi-arch structure nanocomposite coating controlled directional growth. The shell-imitating multi-arch structure nano-composite coating provided by the invention has a nacre aragonite structure imitating red abalone shell, and has high hardness, high temperature resistance, high fracture strength and low friction coefficient while maintaining good fracture toughness , Corrosion and wear resistance in seawater and other excellent properties, its preparation process is simple and controllable, low cost, unlimited to the shape of the workpiece and easy to expand production, in new energy, high-efficiency power, marine engineering, nuclear energy facilities, microelectronics / optoelectronic devices, etc. field has great potential.

Description

technical field [0001] The invention relates to a wear-resistant and corrosion-resistant coating, in particular to a shell-like multi-arch nanocomposite coating, a method for inducing the construction of the nanocomposite coating based on a metal seed layer and its application, and belongs to the technical field of surface protection. Background technique [0002] With the needs of human development related to climate change, low-carbon world, energy and security, and green and intelligent manufacturing, new energy, high-efficiency power, large aircraft, new aerospace vehicles, advanced manufacturing, high-speed rail transit, ocean engineering, nuclear energy facilities, micro The key issues of fracture and damage mechanics in major demand fields such as electronic / optoelectronic devices need urgent attention. In this context, the working environment faced by mechanical parts in various equipment is becoming more and more harsh, so the requirements for high hardness, high st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/06C23C14/14C23C14/34C23C14/02
CPCC23C14/0664C23C14/14C23C14/3464C23C14/021
Inventor 王立平董敏鹏李金龙
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI