Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Sopping up proteins with thermosponges: Researchers develop novel nanoparticle platform that proves effective in delivering protein-based drugs October 22nd, 2014

Brookhaven Lab Launches Computational Science Initiative:Leveraging computational science expertise and investments across the Laboratory to tackle "big data" challenges October 22nd, 2014

Bipolar Disorder Discovery at the Nano Level: Tiny structures found in brain synapses help scientists better understand disorder October 22nd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Materials/Metamaterials

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Materials for the next generation of electronics and photovoltaics: MacArthur Fellow develops new uses for carbon nanotubes October 21st, 2014

Super stable garnet ceramics may be ideal for high-energy lithium batteries October 21st, 2014

Could I squeeze by you? Ames Laboratory scientists model molecular movement within narrow channels of mesoporous nanoparticles October 21st, 2014

Announcements

NanoTechnology for Defense (NT4D) October 22nd, 2014

Mechanism behind nature's sparkles revealed October 22nd, 2014

TARA Biosystems and Harris & Harris Group Form Company to Improve Safety and Efficacy of New Therapies October 22nd, 2014

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Aerospace/Space

Removal of Limitations of Composites at Superheat Temperatures October 20th, 2014

1980s aircraft helps quantum technology take flight October 20th, 2014

Electrically conductive plastics promising for batteries, solar cells October 10th, 2014

Fast, cheap nanomanufacturing: Arrays of tiny conical tips that eject ionized materials could fabricate nanoscale devices cheaply October 4th, 2014

Industrial

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

New Nanocomposites Help Elimination of Toxic Dyes October 15th, 2014

Perpetuus Carbon Group Receives Independent Verification of its Production Capacity for Graphenes at 140 Tonnes per Annum: Perpetuus Becomes the First Manufacturer in the Sector to Allow Third Party Audit October 7th, 2014

Bilbao (Spain) to welcome 1500 delegates at international event: ImagineNano 2015 and Graphene 2015 under the same roof October 2nd, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE