Moderate temperature oxidation protection using nanocrystalline structures

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Abstract

We hypothesised that a nanostructure can bring about dramatic improvements in the oxidation resistance of low chromium iron-chromium alloys at moderate temperatures. A nanocrystalline Fe-10wt%Cr alloy was found to undergo oxidation at a rate that was an order of magnitude lower than its microcrystalline counterpart. Importantly, the oxidation resistance of nanocrystalline Fe-10wt%Cr alloy was comparable to that of the common corrosion-resistant microcrystalline stainless steels. We outline the difficulties in processing nanocrystalline iron-chromium ferritic alloys as well as the success in circumventing them. The recently reported roles of nanocrystalline structures in oxidation resistance of a few other systems are also considered.

Original languageEnglish
Title of host publicationCorrosion Protection and Control Using Nanomaterials
EditorsViswanathan S. Saji, Ronald Cook
Place of PublicationCambridge UK
PublisherWoodhead Publishing Limited
Pages129-145
Number of pages17
ISBN (Electronic)9780857095800
ISBN (Print)9781845699499
DOIs
Publication statusPublished - Feb 2012

Keywords

  • Crystalline and intercrystalline components
  • Microcrystalline
  • Nanocrystalline
  • Oxidation corrosion resistance
  • Thermal stability

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