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High-hardness antibacterial TiSiN/Ag nano composite functional coating and preparation method and application thereof

A composite coating and nanocomposite technology, applied in the field of materials, can solve the problems of poor wear resistance and low hardness

Active Publication Date: 2016-08-17
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

However, the shortcomings of titanium alloys such as low hardness and poor wear resistance have become increasingly prominent in their applications.

Method used

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  • High-hardness antibacterial TiSiN/Ag nano composite functional coating and preparation method and application thereof
  • High-hardness antibacterial TiSiN/Ag nano composite functional coating and preparation method and application thereof
  • High-hardness antibacterial TiSiN/Ag nano composite functional coating and preparation method and application thereof

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preparation example Construction

[0100] The present invention also provides a method for preparing the composite coating, comprising the steps of:

[0101] a) Under vacuum or inert atmosphere, preheating atmosphere, sputter cleaning is carried out on the substrate and target to be plated;

[0102] b) optionally under a high-purity nitrogen or nitrogen-argon mixed gas atmosphere, using a pure titanium target to deposit a transition layer on the surface of the substrate to be plated;

[0103] c) co-depositing a nanocomposite layer on the surface of the product obtained in the preceding step by using a titanium silicon target and an Ag target at the same time under a high-purity nitrogen or nitrogen-argon mixed gas atmosphere to obtain the composite coating;

[0104] d) optionally under an inert atmosphere, heat-treating the product obtained in the preceding step to obtain the composite coating.

[0105] In another preference, before step a), also include steps:

[0106] a-0) polishing the substrate to be plat...

Embodiment 1

[0144] Example 1 Coating 1

[0145] (1) Perform mechanical grinding and polishing on the titanium alloy test piece to be plated, then perform ultrasonic vibration cleaning in acetone reagent, wash the sample 3 times, and air-dry the sample after cleaning.

[0146] (2) Send the sample obtained in the preceding steps into a vacuum chamber, and the vacuum chamber is pre-evacuated, and the vacuum degree of the background is 1×10 -3 Pa, the vacuum chamber is heated during the pre-evacuation process, and the heating temperature is up to 400°C.

[0147] (3) When the background vacuum and heating temperature meet the requirements, the target is cleaned by sputtering for 2 minutes, and the sample to be plated is cleaned by ion sputtering and etching for 5 minutes.

[0148] (4) Multi-arc ion plating is used to first deposit a TiN transition layer on the sample to be plated, using a pure titanium target (target purity 99.9at.%), the reaction gas is high-purity nitrogen, and the coating ...

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Abstract

The invention relates to a high-hardness antibacterial TiSiN / Ag nano composite functional coating and a preparation method and application thereof. Specifically, the coating comprises a nano composite layer and an optional transition layer, amorphous silicon nitride serves as a substrate of the nano composite layer, and titanium nitride nanocrystalline particles and silver nanocrystalline particles are embedded into the substrate. Optionally, the coating further comprises a substrate used for supporting the coating, and the transition layer is positioned between the nano composite layer and the substrate. The high-hardness antibacterial TiSiN / Ag nano composite functional coating is high in hardness and excellent in antibacterial performance, thereby being capable of well meeting requirements on abrasion resistance and antibacterial protection. The preparation method is simple in process and easy for large-scale popularization.

Description

technical field [0001] The invention relates to the field of materials, in particular to a high-hardness antibacterial TiSiN / Ag nanocomposite functional coating and a preparation method and application thereof. Background technique [0002] Ti-6Al-4V alloy has the advantages of low specific gravity, high specific strength, good low temperature performance, high thermal strength, corrosion resistance and biocompatibility, and is widely used in the aerospace field and marine engineering equipment field. However, the disadvantages of titanium alloys such as low hardness and poor wear resistance are increasingly prominent in its application. A large number of PVD coating technologies have been devoted to improving the wear resistance and antibacterial properties of titanium alloys, such as TiN / Ag, CrN / Ag, MoN / Ag, VN / Ag, ZrN / Ag and other binary nitride coatings combined with Ag The hardness of the composite coating needs to be improved after research. In the present invention, T...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/34
CPCC23C14/0036C23C14/06C23C14/3464
Inventor 李金龙党超群王永欣王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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