Image icon  Magnesia-chrome refractory brick

 
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Description: The micrograph shows the large sintered MgO aggregate (grey) with white chromite and dark pores. In particular, small (5mm) Cr2O3 precipitates are seen in the MgO. Fine particles react to form spinel which directly bond the aggregates conferring high temperature strength.
Keywords: aluminium • bond • brick • calcium • ceramic • chromia • chromite • chromium • grain • iron • magnesia • magnesium • silicon • displacement • indentation • Plasticine
Categories: Science approaches > Microstructure
Materials > Ceramics & glasses
Processes > Thermal treatments > Sintering
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: DoITPoMS, University of Cambridge
Prof W E Lee, Department of Engineering Materials, University of Sheffield
Published by: DoITPoMS, University of Cambridge
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
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Date created: 10 May 2002
Date added: 21 August 2009
Package: DoITPoMS Micrograph Library
Resource ID: 1186