Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Magnesium alloy surface processing method and magnesium alloy

A treatment method and surface treatment technology, applied in the direction of surface reaction electrolytic coatings, coatings, electrolytic coatings, etc., can solve the problems of poor adhesion and corrosion resistance of colored films, and cannot obtain golden yellow effects, etc., and achieve good sensory effects , Improve use value and added value, high adhesion and corrosion resistance

Inactive Publication Date: 2017-06-23
BYD CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problem in the prior art that the colored film layer obtained by dyeing after micro-arc oxidation treatment on the surface of magnesium alloy has poor adhesion and corrosion resistance and cannot obtain golden yellow effect

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

[0053] (1) Preparation of micro-arc oxidation solution A1

[0054] Potassium hydroxide 2 g / L, sodium silicate 15 g / L, sodium fluoride 4 g / L, potassium carbonate 12 g / L and sodium benzoate 2 g / L were sequentially put into water. Stir continuously during the addition process, one reagent is completely dissolved, then add the next one, and stand for 1.5 hours after all the reagents are dissolved, to obtain the micro-arc oxidation solution of this embodiment, which is recorded as A1.

[0055] (2) Preparation of colorant B1

[0056] Ferric ammonium oxalate was dissolved in water to prepare an aqueous solution with a content of ferric ammonium oxalate of 12 g / L. After standing for 2 hours, the colorant B1 of this embodiment was obtained.

[0057] (3) Degreasing treatment

[0058] The magnesium alloy was immersed in sodium hydroxide with a concentration of 80 g / L for degreasing treatment at a temperature of 70 °C for 10 minutes.

[0059] (4) Micro-arc oxidation

[0060] Put the m...

Embodiment 2

[0066] (1) Preparation of micro-arc oxidation solution A2

[0067] Add 3 g / L of potassium hydroxide, 32 g / L of sodium silicate, 5 g / L of sodium fluoride, 15 g / L of potassium carbonate and 5 g / L of sodium benzoate into the water in sequence. Stir continuously during the addition process, one reagent is completely dissolved and then add the next one, and stand for 2 hours after all the reagents are dissolved to obtain the micro-arc oxidation solution of this embodiment, which is recorded as A2.

[0068] (2) Preparation of colorant B2

[0069] Ferric ammonium oxalate was dissolved in water to prepare an aqueous solution with a ferric ammonium oxalate content of 25 g / L, which was left to stand for 2 hours before use to obtain the colorant B2 of this embodiment.

[0070] (3) Degreasing treatment

[0071] The magnesium alloy was immersed in sodium hydroxide with a concentration of 100 g / L for degreasing treatment at a temperature of 80 °C for 20 minutes.

[0072] (4) Micro-arc ox...

Embodiment 3

[0079] (1) Preparation of micro-arc oxidation solution A3

[0080] Potassium hydroxide 5 g / L, sodium silicate 35 g / L, sodium fluoride 6 g / L, potassium carbonate 14 g / L and sodium benzoate 4 g / L were sequentially put into water. Stir continuously during the addition process, one reagent is completely dissolved before adding the next one, and after all the reagents are dissolved, stand for 2 hours and then use for later use to obtain the micro-arc oxidation solution of this embodiment, which is recorded as A3.

[0081] (2) Preparation of colorant B3

[0082] Ferric ammonium oxalate was dissolved in water to prepare an aqueous solution with a content of ferric ammonium oxalate of 15 g / L. After standing for 2 hours, the colorant B3 of this embodiment was obtained.

[0083] (3) Degreasing treatment

[0084] The magnesium alloy was immersed in sodium hydroxide with a concentration of 110 g / L for degreasing treatment at a temperature of 80°C for 15 minutes.

[0085] (4) Micro-arc ...

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

No PUM Login to View More

Abstract

The invention provides a magnesium alloy surface processing method. The method comprises the following steps: step one, putting a magnesium alloy into a micro-arc oxidation solution, taking the magnesium alloy as the anode, and carrying out a micro-arc oxidation treatment; and step two, putting the magnesium alloy processed in the step one into a coloring agent to carry out a coloring treatment, wherein the coloring agent is a water solution containing ferric ammonium oxalate. The provided magnesium alloy surface processing method can form a membrane with a gold yellow color on the surface of the magnesium alloy matrix. The membrane has a strong corrosion resistant performance, and the adhesive force between the membrane and the magnesium alloy matrix is strong. The appearance is beautiful. The using value and additional value of magnesium alloy electronic products are largely increased.

Description

technical field [0001] The invention belongs to the field of metal surface treatment, in particular to a magnesium alloy surface treatment method and a magnesium alloy. Background technique [0002] In the prior art, after the micro-arc oxidation treatment on the surface of the magnesium alloy, it is generally not dyed or only dyed in a few colors, such as black, green and other colors, which has the defect of single color, which greatly limits the application field of the magnesium alloy. [0003] In the prior art, methods for dyeing the surface of magnesium alloys generally include methods such as chemical conversion, metal coating, and electrolytic coloring. Although chemical conversion, metal coating and electrolytic coloring can change the surface color of magnesium alloy to a certain extent, the coloring film formed by these methods has poor adhesion and corrosion resistance to the magnesium alloy substrate. [0004] At present, there are not many technical researches...

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
IPC IPC(8): C25D11/30
CPCC25D11/30C25D11/024
Inventor 王海舟罗文海赵丽红
Owner BYD CO LTD
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com