Featured Research

from universities, journals, and other organizations

An 'Impossible' Alloy Now Possible: Cerium And Aluminum Form Substitutional Alloy At High Pressure

Date:
February 27, 2009
Source:
Uppsala Universitet
Summary:
What has been impossible has now been shown to be possible -- an alloy between two incompatible elements.

What has been impossible has now been shown to be possible – an alloy between two incompatible elements.

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).


Story Source:

The above story is based on materials provided by Uppsala Universitet. Note: Materials may be edited for content and length.


Journal Reference:

  1. Qiao-Shi Zenga et al. Substitutional alloy of Ce and Al. PNAS, February 24, 2009 vol. 106 no. 8 2515-2518 DOI: 10.1073/pnas.0813328106

Cite This Page:

Uppsala Universitet. "An 'Impossible' Alloy Now Possible: Cerium And Aluminum Form Substitutional Alloy At High Pressure." ScienceDaily. ScienceDaily, 27 February 2009. <www.sciencedaily.com/releases/2009/02/090226082515.htm>.
Uppsala Universitet. (2009, February 27). An 'Impossible' Alloy Now Possible: Cerium And Aluminum Form Substitutional Alloy At High Pressure. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/2009/02/090226082515.htm
Uppsala Universitet. "An 'Impossible' Alloy Now Possible: Cerium And Aluminum Form Substitutional Alloy At High Pressure." ScienceDaily. www.sciencedaily.com/releases/2009/02/090226082515.htm (accessed August 1, 2014).

Share This




More Matter & Energy News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
7 Ways to Use Toothpaste: Howdini Hacks

7 Ways to Use Toothpaste: Howdini Hacks

Howdini (July 30, 2014) Fresh breath and clean teeth are great, but have you ever thought, "my toothpaste could be doing more". Well, it can! Lots of things! Howdini has 7 new uses for this household staple. Video provided by Howdini
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
Smartphone Powered Paper Plane Debuts at Airshow

Smartphone Powered Paper Plane Debuts at Airshow

AP (July 30, 2014) Smartphone powered paper airplane that was popular on crowdfunding website KickStarter makes its debut at Wisconsin airshow (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins