Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Lubricating with Nanometer-Sized Silver

Image: Workshop and DIY / FreeDigitalPhotos.net
Image: Workshop and DIY / FreeDigitalPhotos.net

Abstract:
The ever-increasing demands for energy efficiency and high temperature operation of machines require a careful consideration of lubricants for optimal performance. Tribological components like bearings and gears have driven the continual sophistication of lubricating materials and the development of additives which enhance their performance.

Lubricating with Nanometer-Sized Silver

Germany | Posted on March 22nd, 2012

These additives are designed to enhance specific attributes of lubricant properties, such as viscosity, performance at particular temperatures, friction and wear reduction, rust and corrosion prevention, or oxidative stability. Conventional oils and greases undergo severe degradation at elevated temperatures, whereas solid lubricants can function at far higher temperatures.

Commonly, graphite and MoS2, which have been studied for decades, are used as lubricant additives, but nanometer-sized particles have more recently made an appearance. Nanoparticles are particularly effective because they form more stable dispersions in oils than do larger particles.

To get an efficient and cost-effective system, Christina P. Twist and co-workers from the Northwestern University in Evanston, Illinois (USA), and the University of Jordan in Amman (Jordan) synthesized two silver complexes and added them to engine oil at various concentrations. Silver is a relatively soft metal and has been previously investigated as a solid lubricant in the form of coatings.

The researchers report on the thermolytic and tribological properties of these complexes as they are transformed to lubricious silver metal. They evaluated the performance of these complexes as lubricant additives via pin-on-disk friction tests and wear scar measurements.

Results of the friction tests and wear measurements indicate a significant reduction in wear and little change in friction. The improved wear performance is attributed to the thermolysis and deposition of the silver-based complexes in the wear scar. However, while the oil and silver complex suspensions were mixed thoroughly before testing for at least 15 min to achieve as homogeneous distribution as possible, some larger crystallites were likely present. This problem can be remedied in future using more lipophilic ligands.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

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.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

SEFCU, SUNY Poly CNSE Announce Winning Student-Led Teams in the 6th Annual $500,000 New York Business Plan Competition April 25th, 2015

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Discoveries

SEFCU, SUNY Poly CNSE Announce Winning Student-Led Teams in the 6th Annual $500,000 New York Business Plan Competition April 25th, 2015

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Materials/Metamaterials

Electron spin brings order to high entropy alloys April 23rd, 2015

Scientists Use Nanoscale Building Blocks and DNA 'Glue' to Shape 3D Superlattices: New approach to designing ordered composite materials for possible energy applications April 23rd, 2015

Surface matters: Huge reduction of heat conduction observed in flat silicon channels April 23rd, 2015

Nanoparticles Used to Improve Mechanical, Thermal Properties of Cellulose Fibers April 23rd, 2015

Announcements

SEFCU, SUNY Poly CNSE Announce Winning Student-Led Teams in the 6th Annual $500,000 New York Business Plan Competition April 25th, 2015

Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics April 25th, 2015

Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing April 24th, 2015

Fast and accurate 3-D imaging technique to track optically trapped particles April 24th, 2015

Industrial

Nanoparticles Used to Improve Mechanical, Thermal Properties of Cellulose Fibers April 23rd, 2015

Nanocomposites Play Effective Role in Production of Smart Fibers April 18th, 2015

Taking aircraft manufacturing out of the oven: New technique uses carbon nanotube film to directly heat and cure composite materials April 14th, 2015

Industrial Nanotech, Inc. Announces Next Large Order from the Oil and Gas Industry March 26th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project