Subscribe to our free daily newsletters
  Space Industry and Business News  




Subscribe to our free daily newsletters



An Impossible Alloy Now Possible

File image.
by Staff Writers
Uppsala, Sweden (SPX) Feb 27, 2009
What has been impossible has now been shown to be possible - an alloy between two incompatible elements. The findings are being published in the next edition of Proceedings of the National Academy of Science, USA.

A research team led by Professor H.K. Mao from Carnegie Institution of Washington and Professor Rajeev Ahuja from UU have used high pressure experiments and theoretical calculations to study the behaviour of Ce3Al under high pressure.

"We were surprised to find that Cerium and Aluminium formed a so called substitutional alloy under high pressure. Forming these alloys has been limited to elements close in atomic radii and electronegativity up until now", sais Professor Rajeev Ahuja of Uppsala University.

The difference in radii and electronegativity of Cerium and Aluminium was diminished by applying pressure. Both synchrotron X-ray diffraction and ab initio calculations showed the same cause for bringing the two elements closer in radii and electronegativity, resulting in the new alloy phase. After the release of pressure the substitutional alloy still remained.

"This discovery opens up the possibility for finding new alloys with other ratios between Cerium and Aluminium, as well as alloys with Cerium and other incompatible elements. These new alloys may possess interesting and useful mechanical, electronic, and magnetic properties".

The new findings have been made possible by the recent development of high pressure diamond anvil cell and synchrotron radiation techniques. The extensive simulations were performed at Uppsala University's Multidisciplinary Center for Advanced Computational Science (UPPMAX).

Related Links
Uppsala University
Space Technology News - Applications and Research



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


Team Develops New Metamaterial Device
Chestnut Hill MA (SPX) Feb 25, 2009
An engineered metamaterial proved it can function as a state-of-the-art device in the complex terahertz range of the electromagnetic spectrum, setting a standard of performance for modulating tiny waves of radiation, according to a team of researchers from Boston College, the Los Alamos and Sandia national laboratories, and Boston University.







  • Analysis: EU to listen in on Skype calls?
  • Google introduces ads to Google News
  • Mobile phone showcase reveals trends to watch
  • Search engine accuses Google of antitrust violations

  • Russia Set To Put US Telecom Satellite Into Orbit
  • BrahMos To Sign MOU With ISRO
  • DPRK Shows Tough Stand On Satellite Launch
  • Goddard Deputy Director Named Chairman Of OCO Investigation

  • Top Chinese aircraft maker launches global recruitment drive
  • Major airlines call for climate deal to include aviation
  • Swiss aircraft firm to cut jobs in Ireland
  • Bank of China extends massive credit to state aircraft maker

  • Boeing Delivers First Communications Payload To MUOS Prime Contractor
  • Raytheon Delivers Final Sentinel R Mk 1 Aircraft For UK ASTOR System
  • USAF Awards LockMart Team Contract To Extend TSAT Risk Reduction/System Definition Phase
  • Major Test Of Second Advanced EHF MilComms Satellite Underway

  • Ball Aerospace Completes OMPS Integration For NPP
  • An Impossible Alloy Now Possible
  • Space Debris, Comets And Asteroids Threaten Earth
  • The Orsted Satellite - 10 Years In Space

  • Raytheon Makes Executive Changes In Space Business
  • George Preston Chosen For 2009 Henry Norris Russell Lectureship
  • Stevens New Director Of Communications And Public Outreach For Space Foundation
  • ATK Appoints Blake Larson To Lead Space Systems Group

  • Satellite Data Provide New View Of Smoke From Wildfires
  • Orbital's Launch Of Taurus Rocket Is Unsuccessful
  • Counting Carbon
  • Five Things About The Orbiting Carbon Observatory

  • Simplifying Tracking Of Fleet Driver Data
  • Trimble Takes Outdoor Rugged Computers To The Iditarod
  • M and M Pipeline Services Improves Field Operations
  • Keeping Unmanned Security Vehicles On Track

  • The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement