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

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Nanocatalysis for organic chemistry: This research article by Dr. Qien Xu et al. is published in Current Organic Chemistry, Volume 20, Issue 19, 2016 August 30th, 2016

Continuous roll-process technology for transferring and packaging flexible LSI August 29th, 2016

Meteorite impact on a nano scale August 29th, 2016

Materials/Metamaterials

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

Unraveling the crystal structure of a -70 Celsius superconductor, a world first: Significant advancement in the realization of room-temperature superconductors August 25th, 2016

Semblant to Present at China Mobile Manufacturing Forum 2016 August 25th, 2016

Announcements

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Nanocatalysis for organic chemistry: This research article by Dr. Qien Xu et al. is published in Current Organic Chemistry, Volume 20, Issue 19, 2016 August 30th, 2016

Continuous roll-process technology for transferring and packaging flexible LSI August 29th, 2016

Meteorite impact on a nano scale August 29th, 2016

Aerospace/Space

Meteorite impact on a nano scale August 29th, 2016

University of Puerto Rico and NASA back in the news XEI reports August 23rd, 2016

To Infinity and Beyond with Nanosatellites August 10th, 2016

Carbon nanotube 'stitches' make stronger, lighter composites: Method to reinforce these materials could help make airplane frames lighter, more damage-resistant August 4th, 2016

Industrial

New flexible material can make any window 'smart' August 23rd, 2016

Industrial Nanotech, Inc. Provides Shareholder Update August 22nd, 2016

Let's roll: Material for polymer solar cells may lend itself to large-area processing: 'Sweet spot' for mass-producing polymer solar cells may be far larger than dictated by the conventional wisdom August 12th, 2016

Quantum dots with impermeable shell: A powerful tool for nanoengineering August 12th, 2016

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







Car Brands
Buy website traffic