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High-temperature phase relations in selected MnO-CrOx-containing systems

Journal Article


Abstract


  • Phase relations in the pseudobinary MnO-CrOx system were studied by the reaction of the individual oxides in the temperature range 1400°-1750°C under a reducing atmosphere with a CO:CO2 volume ratio of 4.8, yielding oxygen partial pressures in the range 10-9.98-10-6.97 atm. In the pseudoternary MnO-CrOx-containing systems that constitute the pseudoquaternary MnO-CrOx-CaO-SiO2 system, phase relations were determined only at 1500°C under an oxygen partial pressure of 10-8.99 atm. Characteristic of these MnO-CrOx-containing systems was the dominance of the (Mn,Cr)3O4 spinel phase.

Publication Date


  • 1998

Citation


  • Garbers-Craig, A. M., & Dippenaar, R. J. (1998). High-temperature phase relations in selected MnO-CrOx-containing systems. Journal of the American Ceramic Society, 81(4), 933-938. doi:10.1111/j.1151-2916.1998.tb02429.x

Scopus Eid


  • 2-s2.0-0032050589

Web Of Science Accession Number


Start Page


  • 933

End Page


  • 938

Volume


  • 81

Issue


  • 4

Abstract


  • Phase relations in the pseudobinary MnO-CrOx system were studied by the reaction of the individual oxides in the temperature range 1400°-1750°C under a reducing atmosphere with a CO:CO2 volume ratio of 4.8, yielding oxygen partial pressures in the range 10-9.98-10-6.97 atm. In the pseudoternary MnO-CrOx-containing systems that constitute the pseudoquaternary MnO-CrOx-CaO-SiO2 system, phase relations were determined only at 1500°C under an oxygen partial pressure of 10-8.99 atm. Characteristic of these MnO-CrOx-containing systems was the dominance of the (Mn,Cr)3O4 spinel phase.

Publication Date


  • 1998

Citation


  • Garbers-Craig, A. M., & Dippenaar, R. J. (1998). High-temperature phase relations in selected MnO-CrOx-containing systems. Journal of the American Ceramic Society, 81(4), 933-938. doi:10.1111/j.1151-2916.1998.tb02429.x

Scopus Eid


  • 2-s2.0-0032050589

Web Of Science Accession Number


Start Page


  • 933

End Page


  • 938

Volume


  • 81

Issue


  • 4