Zu dem Transportsystem V-O-Te-Cl und dem Transportverhalten der Vanadinoxide mit TeCl4(II). Der chemische Transport der Magnéliphasen VnO2n–1, des V6O13 und des V2O5 |
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Authors: | H Oppermann W Reichelt G Krabbes E Wolf |
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Abstract: | It was reported on the transport system V O Te Cl and on the transport behaviour of VO2 in a previous paper. This paper deals with the chemical transport of Magnéli phases VnO2n–1, and of V6O13, and of V2O5. Resulting from the composition of the gas phase over the solid phases in the presence of TeCl4 the chronological sequence of the transported phases as well as the direction and rate of transport are calculated. These results are compared with experiments. All of the oxides are obtained without deposition of any other phases. Their phase boundaries are determined. The dependence on temperature is investigated for the upper phase boundary of V2O3. |
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