Method of preparing thin crystal layer on magnesium alloy surface

A magnesium alloy and fine-grain technology, which is applied in the field of surface modification, can solve the problems of high energy consumption, surface oxidation of magnesium alloys, complicated processes, etc., and achieves the effects of simple process, grain refinement and convenient operation.

Inactive Publication Date: 2007-10-24
LANZHOU UNIVERSITY OF TECHNOLOGY
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the energy consumption is large, the process is relatively complicated, and it is easy to oxidize the surface of the magnesium alloy.

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
  • Method of preparing thin crystal layer on magnesium alloy surface
  • Method of preparing thin crystal layer on magnesium alloy surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The AZ91D magnesium alloy obtained by metal mold casting is firstly polished on the surface of the magnesium alloy, and then directly mounted on the friction stir welding machine to process the surface of the magnesium alloy. The speed of the friction stir welding machine is 250-500 rpm The speed is 160-450mm / second. A layer of fine-grained structure with fine grains, uniform and dense structure, and no casting defects is obtained. Figure 1 shows the surface electron microscope microstructure of the magnesium alloy before friction stir processing, the structure is extremely inhomogeneous, eutectic Mg 17 al 12 Discontinuous network or thin rod distribution, extremely coarse grains. As shown in Figure 2, after friction stir processing, the eutectic Mg 17 al 12 disappeared completely, and the crystal grains became very fine.

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 preparing method of fine-grained layer on the surface of magnesium alloy, which is characterized by the following: adopting casting shaping magnesium alloy as raw material; sanding the surface of magnesium alloy; stirring the surface; forming the fine-grained layer with high antirusting and anti-abrasion resistance.

Description

technical field [0001] The invention belongs to the technical field of surface modification and relates to surface refinement and improvement of surface corrosion resistance. Background technique [0002] The invention patent "SiC+Al surfacing method on magnesium alloy surface" (application number 200410089271.5) discloses a SiC+Al surfacing method on magnesium alloy surface. The surface of the magnesium alloy workpiece is polished with sandpaper to remove oxides, and then rinsed with alcohol. Dry in the air; mix SiC and Al powder according to particle size and volume ratio SiC / Al, add binder, stir evenly, and make coating material; apply the prepared coating material evenly on the magnesium alloy workpiece surface, and then dry the coated magnesium alloy workpiece; carry out inert gas shielded tungsten arc surfacing remelting treatment on the surface of the coated magnesium alloy workpiece, adjust the welding current, welding speed and welding torch angle, select the shield...

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 Applications(China)
IPC IPC(8): C23C24/02B23K20/12
Inventor 陈体军朱战民郝远马颖
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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