A method for preparing a reduced graphene oxide coating on the surface of a magnesium alloy

A graphene layer, magnesium alloy technology, applied in the direction of coating, electrolytic coating, prosthesis, etc., to achieve the effect of safe experimental process, excellent photothermal effect, and large-scale industrialization

Active Publication Date: 2022-02-08
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, up to now, there has been no research on the preparation of photothermal effect coatings on the surface of magnesium alloys.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing a reduced graphene oxide coating on the surface of a magnesium alloy
  • A method for preparing a reduced graphene oxide coating on the surface of a magnesium alloy
  • A method for preparing a reduced graphene oxide coating on the surface of a magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] In the present disclosure, the synthesis method of the reduced graphene oxide coating having a strong binding force with the magnesium alloy substrate includes steps such as mechanical processing (or chemical corrosion, etc.), cleaning, electrophoretic deposition, drying, and immersion water reduction to obtain a surface Magnesium alloy material with reduced graphene oxide layer. The thickness of the reduced graphene oxide coating on the surface of the magnesium alloy material may be 5-15 μm. The oxygen content in the reduced graphene oxide coating can be 10-20 at%, and the Mg content in the reduced graphene oxide coating can be 5-10 at%. The following examples illustrate the preparation method of the reduced graphene oxide coating on the surface of the magnesium alloy material provided by the present invention.

[0026] Magnesium alloy pretreatment. During the machining process, the magnesium alloy was polished and smoothed with 600# and 1000# SiC sandpaper in sequen...

Embodiment 1

[0034] Use 600# and 1000# SiC sandpaper to remove the surface oxide layer of the AZ31 magnesium alloy sheet with a thickness of 2mm and a diameter of 10mm, and then use alcohol to ultrasonically clean it. Electrophoretic deposition is then carried out. The electrolyte is a 32 μg / mL graphene oxide solution (volume 250 ml), the solvent is absolute ethanol, and 50 mg of zinc acetate and 50 mg of zinc nitrate hexahydrate are added to the electrolyte. Electrodeposited at a voltage of 80V for 90s to obtain a graphene oxide coating, and the obtained sample was marked as GO-1#;

[0035] figure 1 (a) is a scanning electron microscope image of the surface morphology of the magnesium alloy obtained through the modification treatment in Example 1. It can be seen from the figure that graphene oxide is evenly covered on the surface of the magnesium alloy. figure 2 The XRD spectrum of the surface of the sample modified in Example 1 is given, and it can be seen that only the magnesium phas...

Embodiment 2

[0037]Use 600# and 1000# SiC sandpaper to remove the surface oxide layer of the AZ31 magnesium alloy sheet with a thickness of 2mm and a diameter of 10mm, and then use alcohol to ultrasonically clean it. Electrophoretic deposition is then carried out. The electrolyte is a 32 μg / mL graphene oxide solution (volume 250 ml), the solvent is absolute ethanol, and 50 mg of zinc acetate and 50 mg of zinc nitrate hexahydrate are added to the electrolyte. The graphene oxide coating was obtained by electrodeposition at a voltage of 80V for 120s, and the obtained sample was marked as GO-2#.

[0038] figure 1 (b) is a scanning electron microscope image of the surface morphology of the magnesium alloy obtained through the modification treatment in Example 2. It can be seen from the figure that graphene oxide is evenly covered on the surface of the magnesium alloy. figure 2 The XRD spectrum of the surface of the sample modified in Example 2 is given, and it can be seen that only the magne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thermal resistanceaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing a reduced graphene oxide coating on the surface of a magnesium alloy. The graphene oxide coating is prepared on the surface of a magnesium alloy by electrodeposition technology, and then dried, placed in ultrapure water, and left to stand for a certain period of time. , so that the graphene oxide layer on the surface of the magnesium alloy is partially reduced to form a reduced graphene oxide layer.

Description

technical field [0001] The invention relates to a surface modified medical magnesium alloy material and a surface modification method thereof, in particular to a method for surface modification of a magnesium alloy by electrophoretic deposition and magnesium alloy autoxidation, and belongs to the field of surface modification of metal materials. Background technique [0002] Magnesium alloys are completely degradable and have an elastic modulus close to that of bone tissue, so they are likely to become the next generation of medical bone replacement materials. Recently, researchers have begun to explore the application of magnesium alloys in the treatment of bone tumors (Acta Biomaterial, 2018, 77, 365-379). However, the current research is mainly to kill tumor cells by loading anticancer drugs on the surface of magnesium alloys, and the use of drugs is likely to make tumor cells resistant to drugs, and the side effects of drugs are also difficult to control. Due to the adv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C25D13/02C25D13/12C25D13/22A61L27/04A61L27/30A61L27/54
CPCC25D13/02C25D13/12C25D13/22A61L27/047A61L27/303A61L27/54A61L2300/108A61L2300/416A61L2300/606A61L2430/02
Inventor 刘宣勇刘丽丹彭峰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap