ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Study of the system V₂0₅—Na₂0. I. Phase diagram of the system V₂0_5-NaV0₃

V. Daněk, J. Balajka, and K. Matiašovský

Institute of Inorganic Chemistry, Slovak Academy of Sciences, 809 34 Bratislava

Abstract: The phase diagram of the V₂0_5-NaV0₃  system was re-examd. by thermal and x-ray analyses. The congruently melting compd. 2Na₂O.17V₂O₅ and the incongruently melting compd. 2Na₂O.5V₂O₅ are formed. The former compd. is a V bronze and releases O on solidification. In the partial system V₂O₅-2Na₂O.17V₂O₅, a eutectic exists at 653° and compn. NaVO₃ 3 and V₂O₆ 97%. In the partial system 2Na₂O.17V₂O₅-NaVO₃, a peritectic exists at 581° with compn. V₂O₅ 39 and NaVO₃ 61% and a eutectic point exists at 541° with compn. NaVO₃ 71 and V₂O₅ 29%.

Full paper in Portable Document Format: 276a748.pdf

Chemical Papers 27 (6) 748–751 (1973)