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Simulation shows self-healing zirconium oxide.(NUCLEAR)
- Article from:
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Advanced Ceramics Report
- Article date:
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June 1, 2008
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Copyright informationCOPYRIGHT 2008 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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A computer simulation developed by the US Department of Energy's (DoE's) Pacific Northwest Laboratory (PNNL) has revealed a self-healing behaviour in yttria-stabilized zirconium oxide (zirconia), which may lead to development of radiation-resistant materials for nuclear power plants and waste storage.
The researchers Ram Devanathan and Bill Weber modelled how well the zirconia and other materials stand up to radiation. "If you want a material to withstand radiation over millennia, you can't expect it to just sit there and take it. There must be a mechanism for self-healing," said Devanathan.
The evidence produced by the simulation raises the possibility of engineering ...
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Self-healing behavior in zirconia may lead to radiation-resistant...
The Hindustan Times;
April 20, 2008 ;
431 words
......movement of oxygen atoms heals radiation-induc...engineered ceramic yttria-stabilized zirconia. The researchers...analyzed yttria-stabilized zirconia, a compound...gives up oxygen atoms. But the...displaced oxygen atoms in the ...
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SIMULATION SHOWS HOW DEFECT-ENGINEERED ZIRCONIA REPAIRS RADIATION-INDUCED...
US Fed News Service, Including US State News;
April 17, 2008 ;
545 words
......movement of oxygen atoms heals radiation-induc...engineered ceramic yttria-stabilized zirconia. Scientists...analyzed yttria-stabilized zirconia, a compound...gives up oxygen atoms. But the...displaced oxygen atoms in the ...
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 "Daily News (Los Angeles, CA)")
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JIGGLING ATOMS GIVE ICE SLIPPERY SURFACE.(NEWS)
Daily News (Los Angeles, CA);
December 15, 1996 ;
197 words
......reactions. They discovered that the oxygen atoms in molecules at the surface of the ice...back and forth three times farther than oxygen atoms buried more deeply in the ice structure. They do not know why the surface oxygen atoms in ice vibrate so much. That is a subject...
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Superconductors with electrons in charge.
Science News;
March 4, 1989 ;
457 words
......high-temperature superconductors made to date contain layers of copper and oxygen atoms. Normally, each copper atom is surrounded by five or six oxygen atoms. Four oxygen atoms lie in the same plane as the copper atom, and the remaining oxygen atoms...
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Oxygen trickle puts theory in a pickle. (oxygen found to be escaping from...
Science News;
January 4, 1986 ;
Weisburd, Stefi;
333 words
...Oxygen atoms in the atmosphere can sometimes acquire...hydrogen atoms. But what is giving the oxygen atoms the extra energy to escape? Yau's group...their peaks. The researchers think the oxygen atoms in the polar caps and the adjacent auroral...
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More surprises from new superconductors. (Physical Sciences)
Science News;
June 10, 1989 ;
456 words
......may relate to the way copper atoms bind to oxygen atoms in the crystal lattice. In hole-doped superconductors...atom usually sits at the base of a pyramid of oxygen atoms, with four oxygen atoms in the same plane as the copper atom and one...
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New superconductor clue. (computer study of yttrium-barium-copper-oxide)
Science News;
February 16, 1991 ;
278 words
......computer study, focusing on the ordering of oxygen atoms in specific layers of yttrium-barium-copper-o...superconductors includes six to seven oxygen atoms. The total amount of those atoms and...derive directly from the population of oxygen atoms in each kind of neighborhood. In an...
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epoxides
A Dictionary of Chemistry;
22 words
...epoxides Compounds that contain oxygen atoms in their molecules as part of a three-membered ring (see formula). Epoxides are thus cyclic ethers.
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Gr-8. Double bonds, dative bonds, and charge-separated forms.(GRAPHICAL...
Pure and Applied Chemistry;
February 1, 2008 ;
Brecher, Jonathan;
619 words
......represented? Experimentally, the two oxygen atoms are equivalent, so it would make sense...attempt to honor the octet rule results in oxygen atoms that appear to be non-equivalent. Similar...the visual appearance of equivalent oxygen atoms, we feel that it is acceptable by analogy...
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trioxide
Webster's NewWorld Dictionary;
26 words
...Webster's NewWorld Dictionary 01-01-1988 tri|ox|ide (tri ks'id) n. an oxide having three oxygen atoms to the molecule Copyright 1994, 1991, 1988 Simon & Schuster, Inc.
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dioxan
A Dictionary of Chemistry;
41 words
...dioxan A colourless toxic liquid, C 4 H 8 O 2 ; r.d. 1.03; m.p. 11°C; b.p. 101.5°C. The molecule has a six-membered ring containing four CH 2 groups and two oxygen atoms at opposite corners. It can be made from ethane-1,2-diol and is used as a solvent.
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pentoxide
Webster's NewWorld Dictionary;
28 words
...Webster's NewWorld Dictionary 01-01-1988 pent|ox|ide (pent ks'id) n. an oxide that contains five oxygen atoms in its molecule Copyright 1994, 1991, 1988 Simon & Schuster, Inc.
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thio acid
Webster's NewWorld Dictionary;
33 words
...Webster's NewWorld Dictionary 01-01-1988 thi|o acid (thi'o) an acid in which part or all of the oxygen atoms in the molecule have been replaced by sulfur atoms Copyright 1994, 1991, 1988 Simon & Schuster, Inc.
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Better batteries from lithium images.(News)(Brief Article)
Machine Design;
September 4, 2003 ;
173 words
......to simultaneously resolve columns of lithium, cobalt, and oxygen atoms in the compound lithium-cobalt oxide (LiCo[O.sub.2]). LiCo...Laboratory, says a computer simulation predicted that columns of oxygen atoms should look bright and sharp-edged, the cobalts should be...
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crown ethers
A Dictionary of Chemistry;
257 words
......containing large rings of carbon and oxygen atoms. The crown ethers are macrocyclic polyethers...atoms in the ring and m is the number of oxygen atoms. Substituted crown ethers can also be...metal ions by coordination through the oxygen atoms. The stability of these complexes ...
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