Home > Press > Nanocoatings Boost Corrosion Resistance of Aluminum Alloys
Abstract:
The presence of non-resistance elements to corrosion such as Mg, Si and Cu, as well as microstructural malfunctions, including pores in aluminum alloys, have caused the alloys to have relatively low corrosion resistance and mechanical properties.
Iranian researchers from Tarbiat Modares University carried out a research to increase the resistance of alloys, and they succeeded in the production of laboratorial nanocoatings with desirable properties such as high corrosion and abrasion resistance.
A nanocoating was produced in this research to protect alloys. To this end, surface nanocrystalline pre-process has been used through plasma electrolyte oxidation (PEO) or microsparkle oxidation method.
Microsparkle oxidation is a surface process that has been widely used in recent years. Taking into consideration the fact that microsparkle oxidation process highly depends on the microstructure of the substrate, it seems that the nano-crystallization of aluminum alloy surface significantly affects the properties of the produced coating. This fact has been studied in the present research.
Results showed that the samples coated in silicate-based electrolyte have firmer structure than the samples coated in phosphate-based electrolyte. This fact results in more pores and it reduces resistance to corrosion. In addition, the average of pore area percentage on the surface of samples coated in silicate-based electrolyte is higher than that of samples coated in phosphate-based electrolyte. In other words, corrosion resistance is higher in coatings produced in phosphate based electrolyte.
Results of the research have been published in Bulletin of Materials Science, vol. 38, issue 4, 2015, pp. 935-943.
####
For more information, please click here
Copyright © Fars News Agency
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Related News Press |
News and information
Researchers develop artificial building blocks of life March 8th, 2024
Discoveries
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Researchers’ approach may protect quantum computers from attacks March 8th, 2024
High-tech 'paint' could spare patients repeated surgeries March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Materials/Metamaterials/Magnetoresistance
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Focused ion beam technology: A single tool for a wide range of applications January 12th, 2024
Announcements
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Researchers develop artificial building blocks of life March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||