Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part

An in-situ growth and wear-resistant coating technology, applied in anodic oxidation and other directions, can solve the problems of easy wear of the film layer, and achieve the effects of environmental protection, improved friction performance, and high bonding strength

Active Publication Date: 2014-01-22
HARBIN INST OF TECH
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the technical problem that the film layer obtained is easy to wear when the existing micro-arc oxidation technology is used to process LY12 aluminum alloy structural parts, and to provide ultra-thin and durable aluminum alloy special-shaped parts with rapid in-situ growth. Preparation method of abrasive coating

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
  • Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part
  • Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part
  • Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] Specific implementation mode 1: The preparation method of rapid in-situ growth of ultra-thin wear-resistant coating on the surface of aluminum alloy special-shaped parts according to this implementation mode is carried out according to the following steps:

[0025] 1. Surface pretreatment of LY12 aluminum alloy special-shaped parts: immerse LY12 aluminum alloy special-shaped parts in an aqueous solution of sodium hydroxide with a concentration of 35g / L-65g / L, keep it at a temperature of 50°C-60°C for 30s-60s, and take it out Rinse with clean water first, then rinse with distilled water, and dry;

[0026]2. Preparation of electrolyte: according to the main film-forming agent concentration of 10g / L-50g / L, the auxiliary film-forming agent concentration of 1g / L-10g / L, and the pH regulator concentration of 1g / L-5g / L, the reaction can be adjusted stably The agent concentration is 50ml / L~300ml / L, and the surfactant concentration is 0.1g / L~5g / L. Weigh the main film-forming agen...

specific Embodiment approach 2

[0029] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, LY12 aluminum alloy special-shaped parts are immersed in an aqueous sodium hydroxide solution with a concentration of 40g / L-60g / L, at a temperature of 55°C-58°C Hold down for 40s ~ 50s. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment differs from Embodiment 1 in that in Step 1, the special-shaped LY12 aluminum alloy is immersed in an aqueous sodium hydroxide solution with a concentration of 50 g / L, and kept at a temperature of 56° C. for 45 seconds. Others are the same as in the first embodiment.

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
Current densityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for quick in-situ growth of an ultrathin wear-resisting coating on the surface of an aluminum alloy irregular part, relates to a preparation method of an aluminum alloy surface coating, and aims to solve the technical problem that the film obtained when parts of an LY12 aluminum alloy irregular part are treated by a micro-arc oxidation technology is easy to wear. The method comprises the following steps: I, surface pretreatment of the LY12 aluminum alloy irregular part; II, preparation of an electrolyte, wherein the electrolyte is prepared from a main film-forming agent, an auxiliary film-forming agent, potassium hydroxide, glycerol, polyethylene glycol 1000 and distilled water; III, micro-arc oxidation, wherein the ultrathin wear-resisting coating is quickly obtained on the surface of the LY12 aluminum alloy irregular part. The thickness of the film of the ceramic film is 5-15 mu m, the average friction coefficient of the film is 0.12-0.20, and the bonding strength of the film is 14-30MPa. The preparation method can be applied to structural connectors of spacecrafts.

Description

technical field [0001] The invention relates to a preparation method of an aluminum alloy surface coating. Background technique [0002] With the development of spacecraft in the fields of military, science, and life, its design gradually changes from single-function to multi-function, which makes the payload of spacecraft continue to increase. Therefore, the lightweight of spacecraft structural components is proposed. Higher requirements, seeking light and wear-resistant materials and corresponding technical means to solve the problem of periodic wear and tear of spacecraft structural components, in order to cope with the development concept of lightweight and large-scale spacecraft today. High-strength, low-density materials are the first choice for the design concept of spacecraft structures, as a benchmark for improving the efficiency of spacecraft structures. Among all structural materials, aluminum alloy is a light and low-cost metal with a low density (1.82g / cm 3 ),...

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): C25D11/04C25D11/06
Inventor 吴晓宏李航李杨孟松秦伟卢松涛
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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