Journal of Materials Science

, Volume 11, Issue 8, pp 1459–1464 | Cite as

Phase relations of cordierite and sapphirine in the system MgO-Al2O3-SiO2

  • R. M. Smart
  • F. P. Glasser


Cordierite and corundum (α-Al2O3) are shown to be compatible phases below 1386±5° C. The reaction cordierite + corundum = mullite + spinel is reversible, but sluggish. Na2O and CaO (1.5 wt %) extend the stability of assemblages with mullite and spinel to slightly lower temperatures: 1364±5° C and 1380±8° C respectively, while 1.5 wt % iron oxide raises their stability temperature to 1397±8° C.


Oxide Iron Polymer Iron Oxide Phase Relation 
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Copyright information

© Chapman and Hall Ltd. 1976

Authors and Affiliations

  • R. M. Smart
    • 1
  • F. P. Glasser
    • 1
  1. 1.Department of ChemistryUniversity of AberdeenOld AberdeenUK

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