Abstract
The standard Gibbs energies of formation of barium phosphide and barium orthophosphate were determined by a chemical equilibration technique yielding the following results: 3Ba(1)+P2(g)=Ba3P2 (s) ΔG°=-732,000+156.1T(±12,800) (J/mol) 3BaO (s)+P2(g)+5/2O2(g)=Ba3(PO4)2(s) ΔG°=-2,523,000+580.0 T(±16,600) (J/mol) The stability and the thermodynamic behavior of barium compounds as reaction products of dephosphorization of steel were discussed in terms of the oxygen partial pressure and the activity coefficient of Ba1.5P in molten Ba saturated with CaO.
| Original language | English |
|---|---|
| Pages (from-to) | 871-877 |
| Number of pages | 7 |
| Journal | Metallurgical Transactions B |
| Volume | 20 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1989 Dec |
All Science Journal Classification (ASJC) codes
- Engineering(all)
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Min, D. J., & Sano, N. (1989). Determination of the standard gibbs energies of formation of Ba3P2 and Ba3(PO4)2. Metallurgical Transactions B, 20(6), 871-877. https://doi.org/10.1007/BF02670192