Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

SEMATECH to Showcase Innovation and Advances in Manufacturing at SEMICON Japan 2014: SEMATECH experts will share the latest techniques, emerging trends and best practices in advanced manufacturing strategies and methodologies November 26th, 2014

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts November 26th, 2014

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Discoveries

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Vegetable oil ingredient key to destroying gastric disease bacteria: In mice, therapeutic nanoparticles dampen H. pylori bacteria and inflammation that lead to ulcers and gastric cancer November 25th, 2014

Research yields material made of single-atom layers that snap together like Legos November 25th, 2014

Materials/Metamaterials

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Lawrence Livermore researchers develop efficient method to produce nanoporous metals November 25th, 2014

Research yields material made of single-atom layers that snap together like Legos November 25th, 2014

Aromatic food chemistry to the making of copper nanowires November 24th, 2014

Announcements

SEMATECH to Showcase Innovation and Advances in Manufacturing at SEMICON Japan 2014: SEMATECH experts will share the latest techniques, emerging trends and best practices in advanced manufacturing strategies and methodologies November 26th, 2014

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts November 26th, 2014

The mysterious 'action at a distance' between liquid containers November 26th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Industrial

A*STAR SIMTech wins international award for breaking new ground in actuators: SIMTech invention can be used in an array of industries, and is critical for next generation ultra-precision systems November 24th, 2014

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Biosenta Inc. Updates New Household Disinfectant Testing Results; It Kills 100% of a Broad Range of Deadly Molds, Fungi, Bacteria, and Viruses, Including Ebola and Enterovirus D68 November 20th, 2014

OCSiAl Builds Worldwide Partnership Network November 12th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE