Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of magnesium alloy surface coating and preparation method thereof

A surface coating, magnesium alloy technology, applied in metal material coating process, coating, vacuum evaporation plating and other directions, can solve problems such as insufficient wear resistance, and achieve the effect of avoiding cracks and excellent wear resistance.

Active Publication Date: 2022-04-22
XIANGYA HOSPITAL CENT SOUTH UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, insufficient wear resistance is an obvious defect 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Magnesium alloy surface pretreatment: choose magnesium alloy as the substrate, polish the surface of magnesium alloy with 400#, 800#, 1200# precision sandpaper until the surface is smooth without obvious scratches, and then use absolute ethanol, acetone, deionized water Wash for 5 minutes respectively, and dry with a hair dryer at best;

[0019] Ion bombardment of magnesium alloy: perform ion bombardment treatment on the pretreated magnesium alloy to obtain a magnesium alloy substrate with a surface roughness Ra of about 1.5 μm;

[0020] Magnetron sputtering metal Ti layer: Put the magnesium alloy substrate into the magnetron sputtering coating machine, vacuumize the coating equipment, use the metal titanium target as the sputtering source, use argon as the working gas, and prepare on the surface of the magnesium alloy Metal Ti layer, where the sputtering temperature is 220°C, the target base distance is 7cm, the argon gas flow rate is 100sccm, the sputtering power is 1...

Embodiment 2

[0024] Magnesium alloy surface pretreatment: choose magnesium alloy as the substrate, polish the surface of magnesium alloy with 400#, 800#, 1200# precision sandpaper until the surface is smooth without obvious scratches, and then use absolute ethanol, acetone, deionized water Wash for 5 minutes respectively, and dry with a hair dryer at best;

[0025] Ion bombardment of magnesium alloy: perform ion bombardment treatment on the pretreated magnesium alloy to obtain a magnesium alloy substrate with a surface roughness Ra of about 1.5 μm;

[0026] Magnetron sputtering metal Ti layer: Put the magnesium alloy substrate into the magnetron sputtering coating machine, vacuumize the coating equipment, use the metal titanium target as the sputtering source, use argon as the working gas, and prepare on the surface of the magnesium alloy Metal Ti layer, where the sputtering temperature is 220°C, the target base distance is 7cm, the argon gas flow rate is 100sccm, the sputtering power is 1...

Embodiment 3

[0030] Magnesium alloy surface pretreatment: choose magnesium alloy as the substrate, polish the surface of magnesium alloy with 400#, 800#, 1200# precision sandpaper until the surface is smooth without obvious scratches, and then use absolute ethanol, acetone, deionized water Wash for 5 minutes respectively, and dry with a hair dryer at best;

[0031] Ion bombardment of magnesium alloy: perform ion bombardment treatment on the pretreated magnesium alloy to obtain a magnesium alloy substrate with a surface roughness Ra of about 1.5 μm;

[0032] Magnetron sputtering metal Ti layer: Put the magnesium alloy substrate into the magnetron sputtering coating machine, vacuumize the coating equipment, use the metal titanium target as the sputtering source, use argon as the working gas, and prepare on the surface of the magnesium alloy Metal Ti layer, where the sputtering temperature is 220°C, the target base distance is 7cm, the argon gas flow rate is 100sccm, the sputtering power is 1...

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
surface roughnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a magnesium alloy surface coating and a preparation method thereof. The invention successively performs pretreatment, magnetron sputtering metal Ti layer, liquid nitrogen cryogenic treatment and gas nitriding treatment on the medical magnesium alloy successively, and obtains the titanium nitrogen layer on the surface of the medical magnesium alloy. Compared with the direct preparation of the titanium nitrogen layer by traditional magnetron sputtering, the preparation process of the present invention can obtain the titanium nitrogen layer with better wear resistance. It is worth mentioning that after the liquid nitrogen cryogenic treatment, the magnesium alloy must be left standing at room temperature to avoid cracks in the subsequent use of the magnesium alloy composite.

Description

technical field [0001] The invention relates to the field of coating materials, in particular to a magnesium alloy surface coating and a preparation method thereof. Background technique [0002] Magnesium alloy is an alloy composed of magnesium as a matrix and other elements. It is characterized by low density, good heat dissipation, good shock absorption, high specific strength, and excellent specific stiffness. The Young's modulus of magnesium alloy is about 45GPa, far lower than that of stainless steel and cobalt-based alloys, about half of that of titanium alloys, and closer to human bone, which can significantly reduce the stress caused by the mismatch of elastic modulus between implants and bones occlusion effect. Nowadays, as orthopedic internal fixation materials, vascular stents, porous bone tissue engineering materials, etc., magnesium alloys have been widely used in various fields of clinical medicine. However, insufficient wear resistance is an obvious defect o...

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): C23C14/16C23C14/02C23C14/35C23C14/58
CPCC23C14/165C23C14/022C23C14/35C23C14/586C23C14/5806
Inventor 朱剑熹陈鹏胡懿郃贺泰来郭斌
Owner XIANGYA HOSPITAL CENT SOUTH UNIV