Chemical reactions in the Mo-W-Al2O3 system at 2400 K and 100 Pa

Autor: Kh. S. Bagdasarov, D. V. Kostomarov, V. A. Fedorov
Rok vydání: 2012
Předmět:
Zdroj: Inorganic Materials. 48:145-149
ISSN: 1608-3172
0020-1685
DOI: 10.1134/s0020168512010086
Popis: We examine the behavior of the Mo-W-Al2O3 system at T = 2400 K and p = 100 Pa and identify the main chemical reactions that lead to the oxidation of Mo and W. The results indicate that, under these thermodynamic conditions, direct reaction between Mo, W, and molten Al2O3 is impossible, and oxidation processes are indirect and involve vapor species. For a Mo: W: Al2O3 molar ratio of 1: 1: 1, we calculate the gas-phase composition and demonstrate that the predominant vapor species are Al, AlO, Al2O, MoO, MoO2, and WO3.
Databáze: OpenAIRE