Standard gibbs energies of formation of the carbides of chromium by emf measurements |
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| Authors: | Du Sichen S Sheetharaman L -I Staffansson |
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| Affiliation: | (1) Department of Theoretical Metallurgy, The Royal Institute of Technology, S-100 44 Stockholm, Sweden |
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| Abstract: | The standard Gibbs energies of formation of Cr3C2, Cr7C3, and Cr23C6 have been determined by electromotive force (emf) measurements using galvanic cells of the type (−) Cr, CrF2, CaF2 // CaF2 // CaF2, CrF2, ‘Cr−C’ (+)
The measurements have been carried out in the temperature range 1002 to 1176 K. The ΔG° values obtained in the present work are generally in agreement with some of the earlier emf measurements but differ significantly
from those obtained by Cr2O3−CO equilibrium studies. |
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