Nanotechnology Now

Our NanoNews Digest Sponsors







Heifer International

Wikipedia Affiliate Button


Home > Press > Iran to Mass-Produce Ceramic/Steel Composites

Abstract:
Efforts by Iranian researchers in utilizing ceramic nanoparticles to synthesize zirconia/steel composite created beam of hope for mass-production of this composite type for aerospace industries.

Iran to Mass-Produce Ceramic/Steel Composites

Iran | Posted on May 13th, 2010

"In this research, we investigated the joint of zirconia to stainless steel by cosintering method. For this purpose, we used yttria-stabilized zirconia and 430 stainless steel as raw materials," Dr. Dourandish, one of the researchers at Sharif University of Technology, told Iran Nanotechnology Initiative Council.

"Considering the sintering temperature difference between two substances and limited micrometric particles free surfaces causing significant limitation to efficient bonds formation between metal and ceramic, we utilized zirconia nanopowder as the ceramic component," he reiterated, adding, "We also investigated parameters influencing metal/ceramic bond formation in sintering process."

The results of this study imply that direct joint of zirconia to stainless steel by cosintering method is possible. Shear strength test also implies that interface strength is higher under vacuum sintering than argon one. Despite the thermodynamic analysis results showing the infeasibility of chrome oxidation at joint interface, microscopic observations and combinational analyses reveal that chrome plays an important role in bond formation by diffusing into the interface and separation from the steel.

Chrome mostly accumulates on zirconia free surfaces by diffusion from gas phase and surface diffusion. Besides that, liquid phase formation during the sintering causes zirconia surface wettability improvement, increase of diffusion rate in the interface, melt diffusion to zirconia inter-particle space and formation of mechanical seals.

Attaining a fine-grained fine-structure of zirconia (~160 nm) is another feature of the synthesized composites.

####

For more information, please click here

Copyright © FARS

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

Beautiful "flowers" self-assemble in a beaker: Elaborate nanostructures blossom from a chemical reaction perfected at Harvard May 17th, 2013

Artificial Forest for Solar Water-Splitting: Berkeley Lab Researchers Report First Fully Integrated Artificial Photosynthesis Nanosystem May 17th, 2013

Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013

NIA Public Briefing: Nanotechnology and the Council of Europe May 17th, 2013

Materials

Advancements and developments of solid-state nanopores sensors May 16th, 2013

Physicists discover a new kind of friction: Friction in the nano-world May 16th, 2013

Squishy hydrogels may be the ticket for studying biological effects of nanoparticles May 15th, 2013

Pitt Chemists Demonstrate Nanoscale Alloys So Bright They Could Have Potential Medical Applications: “Think about a particle that will not only help researchers detect cancer sooner but be used to treat the tumor, too.” May 15th, 2013

Announcements

Artificial Forest for Solar Water-Splitting: Berkeley Lab Researchers Report First Fully Integrated Artificial Photosynthesis Nanosystem May 17th, 2013

Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013

NIA Public Briefing: Nanotechnology and the Council of Europe May 17th, 2013

Scientists capture first direct proof of Hofstadter butterfly effect May 17th, 2013

Aerospace/Space

Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013

Lifeboat publishes its first book: The Lifeboat Foundation has published its first book, "The Human Race to the Future: What Could Happen -- and What to Do" May 14th, 2013

UC Santa Barbara History Professor's Book Elucidates, Celebrates ‘Visioneers' May 14th, 2013

Over 20 Exhibitors To Present At International Space Development Conference May 13th, 2013

Industrial

Imec and Renesas collaborate on ultra-low power short range radios: Collaboration will develop robust wireless solutions for future electronics May 16th, 2013

HELIOS Program Develops Complete Supply Chain for Integrating Photonics with CMOS Circuit via IC Fabrication Processes May 14th, 2013

Peratech designs the QTC Ultra Sensor - an ultra-sensitive touch sensor for domestic, commercial and industrial use: Pressure sensor so sensitive that it can be operated through glass or steel sheet May 13th, 2013

Industrial Nanotech Announces 3300 Gallon Nansulate(R) Crystal Order - First of Five Orders Expected to Total Over 15,000 Gallons May 13th, 2013

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








abbigliamento uomo
Computer Accessories
© Copyright 1999-2013 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE