Strength behavior of magnesia-based refractories after thermal cycling

Peter A. Olubambi, Anthony Andrews, Thabang S. Mothle

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The thermal shock resistance of four commercially available magnesia-based refractory bricks mainly used in furnace linings were investigated. Thermal stability of the bricks was tested using the water-quench method. The experimental damage was characterised by visual inspection and determining some residual physical and mechanical properties. Cracks were observed after thermal cycling resulting in loss of strength and materials degradation. The results show that thermal stability of magnesia-based refractories depends strongly on their chemical composition. The addition of chrome and spinel improved the thermal stability of magnesia bricks with magnesia-spinel (MgAl 2O4) having better thermal stability than the magnesia-chrome bricks.

Original languageEnglish
Pages (from-to)524-529
Number of pages6
JournalInternational Journal of Applied Ceramic Technology
Volume11
Issue number3
DOIs
Publication statusPublished - 2014
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

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