Supercharge Your Innovation With Domain-Expert AI Agents!

Filming solution of magnesium alloy black conversion film and preparation method of conversion film

A conversion coating, magnesium alloy technology, applied in the direction of metal material coating process, can solve the problems of low corrosion resistance and negative electrode, and achieve the effect of improving corrosion resistance and simple process

Inactive Publication Date: 2015-05-13
SHENYANG LIGONG UNIV
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnesium alloy standard electrode is very negative, resulting in low corrosion resistance, which limits its wide application

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
  • Filming solution of magnesium alloy black conversion film and preparation method of conversion film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Mechanical grinding

[0027] Grind the above magnesium alloy with 600#, 800#, 1000#, 1200# water-grinding sandpaper to expose the fresh magnesium alloy matrix, then rinse it with tap water or distilled water, and blow dry.

[0028] 2. Ultrasonic cleaning

[0029] Put the magnesium alloy sample into the acetone solution for ultrasonic cleaning (40KHz) to wash away the dirt on the surface.

[0030] 3. Alkaline washing

[0031] Put 40g of sodium phosphate, 10g of sodium carbonate, 50g of sodium hydroxide, and 5g of sodium silicate into 800mL of distilled water in turn. After all the substances are dissolved, add distilled water to 1L to make an alkali washing solution. Put the above-mentioned cleaned samples into the alkaline cleaning solution, the temperature is controlled at 80°C, and the time is 5 minutes. The samples were then rinsed with tap water and distilled water.

[0032] 4. Pickling

[0033] Immerse the above-mentioned alkali-washed sampl...

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 discloses a filming solution of a magnesium alloy black conversion film and a preparation method of the conversion film. The filming solution consists of 50-60g / L of a manganese salt, 45-55g / L of zinc nitrate, 1-2g / L of copper sulfate, 0.5-1g / L of EDTA and 1-2g / L of nickel nitrate. The preparation method comprises the following steps: 1, performing mechanical polishing: polishing by using a piece of waterproof abrasive paper so as to remove dirt on the surface of a magnesium alloy; 2, washing with ultrasonic waves: putting into an acetone solution to wash with ultrasonic waves; 3, performing alkaline wash: washing with an alkaline wash solution so as to remove surface oil dirt; 4, performing acid pickling: washing by using an acid liquid so as to remove an oxidation film on the surface; 5, activating: washing with an activating liquid so as to further remove the oxidation film and form activation loci; 6, filming: soaking a magnesium alloy test sample after pre-treatment into the filming solution, thereby obtaining a black conversion film; 7, performing sealing treatment: putting the magnesium alloy test sample with a black film into a sealing treatment liquid, thereby sealing micropores in the surface of the conversion film. By adopting the preparation method, the black magnesium alloy conversion film can be successfully prepared, the film layer is good in corrosion resistance and paint film adhesion, and the filming solution is environment-friendly and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and relates to the composition of a film-forming solution for a corrosion-resistant black conversion film on the surface of a magnesium alloy and a preparation method for the black film. Background technique [0002] Magnesium alloy is currently the lightest metal structure material used in industry, with many excellent properties, its specific strength, high specific stiffness, density is about 2 / 3 of aluminum, 1 / 4 of iron; it has good thermal conductivity Sex, conductivity, damping, dimensional stability, shock absorption, machinability and recycling are considered to be the green materials with the most development and application potential in the 21st century. However, the magnesium alloy standard electrode is very negative, resulting in low corrosion resistance, which limits its wide application. [0003] Chemical conversion coating is a film formed directly on the surface of stee...

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): C23C22/68C23C22/78C23C22/82
CPCC23C22/68C23C22/78C23C22/82
Inventor 邵忠财蔡志强张弘
Owner SHENYANG LIGONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com