Image icon  MgO-C Refractory Brick

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Description: This micrograph is of a specimen which has been pressed parallel with your nose (into the screen) during fabrication, with the bright graphite flakes appearing face on. Compare with micrograph 193.

The MgO grain is polycrystalline and porous. The anisometric microstructure means the brick properties are anisotropic and so the bricks orientation must be carefully controlled on installation. These are true composite materials using ceramic (MgO, natural graphite), metal (Si, Al additives), and polymer (phenolic resin) components.
Keywords: brick • carbon • ceramic • composite material • graphite • magnesia • refractory
Categories: Science approaches > Microstructure
Materials > Ceramics & glasses
Materials > Ceramics & glasses > Fired clays > Brick
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: 02 September 2002
Date added: 21 August 2009
Resource ID: 1232