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

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

A new, tunable device for spintronics: An international team of scientists including physicist Jairo Sinova from the University of Mainz realises a tunable spin-charge converter made of GaAs August 29th, 2014

Nanoscale assembly line August 29th, 2014

New Vice President Takes Helm at CNSE CMOST: Catherine Gilbert To Lead CNSE Children’s Museum of Science and Technology Through Expansion And Relocation August 29th, 2014

Discoveries

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

A new, tunable device for spintronics: An international team of scientists including physicist Jairo Sinova from the University of Mainz realises a tunable spin-charge converter made of GaAs August 29th, 2014

Nanoscale assembly line August 29th, 2014

Copper shines as flexible conductor August 29th, 2014

Materials/Metamaterials

Fonon Announces 3D Metal Sintering Technology: Emerging Additive Nano Powder Manufacturing Technology August 28th, 2014

SouthWest NanoTechnologies CEO Dave Arthur to Discuss “Carbon Nanotubes and Automotive Applications” at The Automotive Composites Conference and Expo 2014 (ACCE2014) August 28th, 2014

Nanodiamonds Are Forever: A UCSB professor’s research examines 13,000-year-old nanodiamonds from multiple locations across three continents August 27th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Announcements

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

Nanoscale assembly line August 29th, 2014

New analytical technology reveals 'nanomechanical' surface traits August 29th, 2014

New Vice President Takes Helm at CNSE CMOST: Catherine Gilbert To Lead CNSE Children’s Museum of Science and Technology Through Expansion And Relocation August 29th, 2014

Industrial

Nanoscale assembly line August 29th, 2014

Iranians Find Novel Method for Processing Highly Pure Ceramic Nanoparticles August 12th, 2014

PerkinElmer to Display Innovative Detection and Informatics Offerings at ACS National Meeting & Exposition Detection, Data Visualization and Analytics for Chemistry Professionals August 8th, 2014

Nanostructured metal-oxide catalyst efficiently converts CO2 to methanol: Highly reactive sites at interface of 2 nanoscale components could help overcome hurdle of using CO2 as a starting point in producing useful products July 31st, 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