Solution for achieving in-situ hole sealing on micro-arc oxidation coating on magnesium alloy surface and preparation method of micro-arc oxidation coating

A micro-arc oxidation and in-situ sealing technology, applied in the direction of anodic oxidation, can solve the problems of complex sealing treatment, affecting corrosion resistance, etc., and achieve the advantages of saving sealing treatment steps, long service life and high chemical stability. Effect

Active Publication Date: 2014-12-17
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for easy create an oxygen ion conductive layer that lasts longer without losing its effectiveness over time or causing damage from salts such as sea water. It also improves upon existing methods used to form this layer due to their ability to react quickly at room temperature. Additionally, it provides strong bond between layers when they dry together effectively prevent them from separating out easily. Overall, these technical features improve the performance and durability of current technologies like solid state batteries (SSB).

Problems solved by technology

This patented technical solution describes various ways to protect Mg from damage caused by external factors like moisture (humidity) and oxygen during manufacturing processes. One common way involves applying coatings made up primarily of magnetic metals called manganese(Mn), nickel (Ni). Another option includes adding certain elements that enhance their effectiveness against rust formation without making them harmful themselves. Existing treatments involve either encapsulating the entire structure into layers or crushing open pores before depositing another material onto the outside surfaces.

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
  • Solution for achieving in-situ hole sealing on micro-arc oxidation coating on magnesium alloy surface and preparation method of micro-arc oxidation coating
  • Solution for achieving in-situ hole sealing on micro-arc oxidation coating on magnesium alloy surface and preparation method of micro-arc oxidation coating
  • Solution for achieving in-situ hole sealing on micro-arc oxidation coating on magnesium alloy surface and preparation method of micro-arc oxidation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation process of a solution that can realize the in-situ sealing of micro-arc oxidation film on the surface of magnesium alloy is as follows: sodium fluorotitanate, potassium polyphosphate and potassium polymetaphosphate are respectively dissolved in appropriate amount of distilled water and mixed together to form a solution, and The concentration of each component in the solution is: 8g / L sodium fluotitanate, 3g / L potassium polyphosphate, 4g / L potassium polymetaphosphate. Then add sodium hydroxide to the above solution according to the addition amount of 5g / L (5g sodium hydroxide is added to each liter of solution), and after the white colloidal suspended particles are no longer precipitated, add polybutyl acetate additive, polybutyl acetate The additive amount is 0.05g / L. Sodium hydroxide was then added to adjust the pH to 5, and the resulting mixed slurry was allowed to stand for 1 day.

[0031] The sample is AM30 magnesium alloy. After sanding to remove ...

Embodiment 2

[0036] The preparation process of a solution that can realize in-situ sealing of micro-arc oxidation film on the surface of magnesium alloy is as follows: potassium fluorotitanate, sodium polyphosphate and ammonium polymetaphosphate are respectively dissolved with appropriate amount of distilled water and mixed together to form a solution. And the concentration of each component in the solution is: 5g / L potassium fluotitanate, 8g / L sodium polyphosphate, 1g / L ammonium polymetaphosphate. Then add ammonia water in the above-mentioned solution according to the addition amount of 2g / L, after the white colloidal suspension particle no longer precipitates, add polyurethane additive, the addition amount of polyurethane additive is 1g / L. Then add sodium hydroxide, adjust the pH to 8, and let stand for 1 day.

[0037] The sample is AZ91 cast magnesium alloy. After sanding to remove surface oxides and burrs, wipe with acetone to degrease.

[0038] The pretreated magnesium alloy workpie...

Embodiment 3

[0042] The preparation process of a solution capable of realizing the in-situ sealing of micro-arc oxidation film on the surface of magnesium alloy is as follows: dissolving ammonium fluorotitanate, sodium polyphosphate and sodium polymetaphosphate respectively with an appropriate amount of distilled water and mixing them together to form a solution, and The concentration of each component in the solution is: 11g / L ammonium fluorotitanate, 6g / L sodium polyphosphate, 2g / L sodium polymetaphosphate. Then potassium hydroxide was added to the above solution in an amount of 3g / L, and after white colloidal suspended particles were no longer precipitated, sodium polyacrylate additive was added, and the amount of sodium polyacrylate additive was 0.8g / L. Adjust the pH to 6.5 and let stand for 1 day.

[0043] The sample is AZ31 magnesium alloy. After sanding to remove surface oxides and burrs, wipe with acetone to degrease.

[0044] The pretreated magnesium alloy workpiece is clamped b...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a solution for achieving in-situ hole sealing on a micro-arc oxidation coating on a magnesium alloy surface and a preparation method of the micro-arc oxidation coating, and belongs to the field of magnesium alloy surface processing technology. The preparation method of the solution comprises the following steps: dissolving fluotitanate, polyphosphate, and polymetaphosphate in distilled water, adding hydroxides to generate a large amount of white colloidal suspension particles, adding an organic additive, adjusting the pH value to 5-10, and allowing the system to stand still for a whole day so as to obtain the solution. A magnesium alloy work tool is soaked in the solution to carry out micro-arc oxidation so as to obtain the micro-arc oxidation coating. The electrolyte will carry out hydrolysis reactions to generate TiO2 sol particles, the TiO2 sol particles will participate in the micro-arc oxidation film-forming process, and thus the formed micro-arc oxidation coating is mainly composed of titanium-containing oxides having a good chemical stability; because the freezing points of the substances in the coating are different, the micro pores in the coating are sealed automatically during the film-forming process, and thus the post treatment of pore sealing is saved.

Description

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

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
Owner INST OF METAL RESEARCH - 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