Navigation Links
Caltech-led team creates damage-tolerant metallic glass
Date:1/12/2011

em. In the new palladium alloy, so many shear bands form when the material is put under stress that it "actually leads to higher toughness, because the bands interact and form networks that block crack propagation," Demetriou explains. In other words, the number of shear bands that form, intersect, and multiply at the tip of an evolved crack is so high that the crack is blocked and cannot travel very far. In essence, then, the shear bands act as a shield, preventing shattering. Thus, the palladium glass acts very much like the toughest of steels, using an analogous blocking mechanism of arresting cracks.

"And," Demetriou adds, "this high toughness does not come at the expense of strength. This material has both strength and toughness, which is why it falls so far outside what's previously been possible. That's why this material is so special."

The palladium alloy described in the paper could soon be of use in biomedical implants, says Demetriou. "One example is dental implants," Demetriou says. "Many noble-metal alloys, including palladium, are currently used in dentistry due to their chemical inertness and resistance to oxidation, tarnish, and corrosion. Owing to its superior damage tolerance, the present palladium glass can be thought of as a superior alternative to conventional palladium dental alloys. Plus, the absence of any elements considered toxic or allergenicnickel, copper, aluminumfrom the composition of this alloy will likely promote good biological compatibility."

The class of such tough metallic glasses potentially could be used in other structural applications like automotive and aerospace components, the team says. But this particular alloy is unlikely to be part of any large-scale manufacturing process. "It's prohibitively expensive," says Demetriou. "The cost is much too high for any large-scale, widespread use."

Still, he notes, the fact that it was created at all, with these particular properties, tells scienti
'/>"/>

Contact: Deborah Williams-Hedges
debwms@caltech.edu
626-395-3227
California Institute of Technology
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Caltech-led researchers find negative cues from appearance alone matter for real elections
2. Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles
3. East-African human ancestors lived in hot environments, says Caltech-led team
4. NIH awards $11.5 million for new Caltech-led membrane-protein center
5. Early-stage gene transcription creates access to DNA
6. MIT creates tiny backpacks for cells
7. Florida professor creates endowment for insect scientists
8. Crustacean shell with polyester creates mixed-fiber material for nerve repair
9. NYSCF Fellow lead author on study that creates blood vessel cells from stem cells
10. $15 million stimulus award creates national consortium for revealing scientific resources
11. Antarctica glacier retreat creates new carbon dioxide store
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Caltech-led team creates damage-tolerant metallic glass
(Date:4/23/2014)... million Food Standards Agency (FSA) project to map the ... , Norovirus outbreaks can rapidly affect large numbers ... strawberries infected 11,000 people in Germany, but there are ... cause infection and which foods are the most likely ... produce data that will help the FSA to develop ...
(Date:4/22/2014)... Coral Gables, Fla. (April 21, 2014) -- There are ... out their feathers and spread their colorful tails; satin ... them with blue and shiny objects; and European bitterling ... Each species has evolved a unique method to communicate ... "Signaling can have profound fitness ...
(Date:4/22/2014)... FL, April 22, 2014 Scientists from the Florida ... a protein complex that plays a critical but previously ... The study, which showed a novel role for a ... in the journal eLife , a publisher supported ... Society and the Wellcome Trust. , "This is a ...
Breaking Biology News(10 mins):Best practices in communication for the animal world 2Best practices in communication for the animal world 3Scientists identify critical new protein complex involved in learning and memory 2
... that it will launch a major long-term project to ... The project is made possible by a $10 million ... of Los Angeles-based Tennenbaum Capital Partners and philanthropist. The ... the ocean,s coastal ecosystems over a long period of ...
... University of Illinois cell and developmental Biology professor Fei ... study how myeloids, a type of blood stem cell, ... defense against infections and tissue damage. This approach offers ... myeloid differentiation, and may improve our ability to treat ...
... DCOctober 25, 2012Biomedical and health research and development (R&D) ... billion or 3% between FY10 and FY11 according to ... represents the first drop in overall spending since Research!America ... follows an uptick in research funding attributed to the ...
Cached Biology News:Smithsonian launches global marine biodiversity project with $10 million donation 2Smithsonian launches global marine biodiversity project with $10 million donation 3A new technique to study how myeloids become white blood cells 2US investment in biomedical and health research on downward trend 2
(Date:1/14/2014)... Carahsoft and CDS Federal Services have ... at 2pm EST (11am PST), “Natural Language Processing: Converting ... how technology can turn raw, heterogeneous data into actionable ... The online webinar will last approximately one hour. , ...
(Date:1/14/2014)... AUSTIN, Texas , Jan. 14, 2014 ... analyze and research medicinal plants and therapeutic derivatives ... industry, health professionals, and researchers about the challenges ... (Logo: http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) The ...
(Date:1/14/2014)... January 14, 2014 Global Record ... innovative information technology solutions for patients, physicians, the ... stakeholders, announced today the signing of a three-year ... and Drug Administration (FDA). This initiative is ...
(Date:1/14/2014)... Altadena, CA (PRWEB) January 14, 2014 ... Angeles County), California, and Montreal, Canada, has big ideas ... and non-fiction. The press's goals are to produce high-quality, ... e-books to support local businesses. , The first ...
Breaking Biology Technology:Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2Bitingduck Press Looks Forward to 2014 With Multimedia E-books 2
... The review process being used by the Food and Drug ... fails to weigh the full effects of the fish,s widespread ... this week,s Science . The salmon, whose genome ... the first genetically modified animal approved for human consumption in ...
... FRAMINGHAM, Mass. and SYDNEY, Nov. 18, 2010 HeartWare ... a leading innovator of less invasive, miniaturized circulatory support ... failure, today announced that CEO Doug Godshall is scheduled ... Piper Jaffray Health Care Conference on Tuesday, November 30, ...
... Patients with Relapsed or Refractory Solid Tumors ... ... (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... = ,; var first_result; // Results are keyed by longUrl, so we need to grab the first one. for ...
Cached Biology Technology:FDA review on transgenic salmon too narrow 2FDA review on transgenic salmon too narrow 3HeartWare to Present at the 22nd Annual Piper Jaffray Health Care Conference 2Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 2Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 3Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 4Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 5Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 6Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 7Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 8Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 9Oncothyreon Reports Positive Data from Phase 1 Clinical Trial of PI3-Kinase Inhibitor PX-866 in Patients with Relapsed or Refractory Solid Tumors 10
Quartz-Halogen, 100 W, High Intensity...
... Normal;heading 1;heading 2;Many ... and experimental situations ... standard transfection and ... systems. ViraPower Lentiviral ...
The product contains 10 ml Dynabeads Epoxy (4.5 m). Supplied at 4 x 10 8 beads/ml...
...
Biology Products: