Oxidation of tungsten in the W-Al2O3 system at temperatures from 2350 to 2500 K and pressures from 1 to 105 Pa

Autor:	E. V. Antonov, Kh. S. Bagdasarov, D. V. Kostomarov
Rok vydání:	2011
Předmět:	General Chemical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element Corundum Tungsten engineering.material Chemical reaction Dissociation (chemistry) Inorganic Chemistry chemistry Materials Chemistry engineering Direct reaction
Zdroj:	Inorganic Materials. 47:152-155
ISSN:	1608-3172 0020-1685
DOI:	10.1134/s0020168511010079
Popis:	We examine chemical reactions that lead to the oxidation of tungsten in the W-Al2O3 system at T = 2350–2500 K and p = 1–105 Pa. The results indicate that, for p ≥ 10 Pa, tungsten oxidizes through reactions with both Al2O3 vapor and dissociation products (Al2O2, Al2O, AlO2, and AlO). For p ≤ 10 Pa, oxidation is due to direct reaction of tungsten with O and/or O2. For p ≤ 2 Pa, tungsten may react with molten Al2O3. A detailed analysis of tungsten oxidation processes is intended to optimize parameters of the melt growth of corundum crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de3212e5030d031e692addc6d0926a24 https://doi.org/10.1134/s0020168511010079 Zobrazit plný text záznamu Plný text ve formátu PDF