caa a22 4500 467927790 CHVBK 20180406152934.0 cr unu---uuuuu 170328e20061101xx s 000 0 eng 10.1134/S0020168506110100 doi (NATIONALLICENCE)springer-10.1134/S0020168506110100 Heterogeneous phase equilibria in the Tb-Mn-O system [Elektronische Daten] [V. Balakirev, L. Vedmid', A. Yankin, O. Fedorova, Yu. Golikov] The heterogeneous phase equilibria involved in the thermal dissociation and hydrogen reduction of TbMnO3 and TbMn2O5 have been studied in the range 973-1173 K by a static method in a circulation unit and by x-ray diffraction analysis of quenched solid phases. The results are represented in the form of oxygen pressure-temperature-composition three-dimensional phase diagrams and their projections onto the oxygen pressure-composition and temperature-composition planes. Phase compatibility triangles and univariant phase equilibria in the Tb-Mn-O system are identified for varied temperature and oxygen pressure. Using thermodynamic analysis of the phase equilibria identified, we have determined the standard enthalpy and entropy of formation of TbMnO3 and TbMn2O5 from elements: ΔH 0(T) = −1488.95 kJ/mol, ΔS 0(T) = 242.17 J/(mol K) for TbMnO3; ΔH 0(T) = −2110.66 kJ/mol, ΔS 0(T) = 482.89 J/(mol K) for TbMn2O5. Pleiades Publishing, Inc., 2006 Balakirev V. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut Vedmid' L. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut Yankin A. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut Fedorova O. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut Golikov Yu Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut Inorganic Materials Nauka/Interperiodica 42/11(2006-11-01), 1230-1235 0020-1685 42:11<1230 2006 42 10789 https://doi.org/10.1134/S0020168506110100 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506110100 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Balakirev V. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut NATIONALLICENCE 700 1- Vedmid' L. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut NATIONALLICENCE 700 1- Yankin A. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut NATIONALLICENCE 700 1- Fedorova O. Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut NATIONALLICENCE 700 1- Golikov Yu Institute of Metallurgy, Ural Division, Russian Academy of Sciences, ul. Amundsena 101, 620016, Yekaterinburg, Russia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/11(2006-11-01), 1230-1235 0020-1685 42:11<1230 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer