Chemischer Transport intermetallischer Phasen, II: Das System FeÐSi
Chemical Vapour Transport of Intermetallic Phases, II: The System FeÐSi O. Bosholm
a, H. Oppermann
aund S. Däbritz
ba TU Dresden, Institut für Anorganische Chemie, Mommsenstr. 13, D-01069 Dresden
b TU Dresden, Institut für Oberflächen- und Mikrostrukturphysik, Mommsenstr. 13, D-01069 Dresden
Sonderdruckanforderungen an Prof. Dr. Dr. h.c. H. Oppermann.
E-mail: ilona.steinbrueck@chemie.tu-dresden.de
Z. Naturforsch.55 b,614Ð626 (2000); eingegangen am 3. März 2000 Chemical Vapour Transport, Calculation of CTR, Thermodynamic Data
Five phases exist in the system FeÐSi: Fe3Si, Fe2Si, Fe5Si3, FeSi,α- andβ-FeSi2. All phases could be prepared by chemical transport with iodine as transport agent in the temperature range between T1(700∞C) and T2(1030∞C). In a attempted systematic clarification of the chemical transport reactions of all phases in the system, the effective transport equilibria were determined. Thermodynamic calculations show satisfactory agreement between calcula- tion and experiment.