Subsolidus phase equilibrium in the Cu-Sb-O system

✍ Scribed by M. Stan; S. Mihaiu; D. Crisan; M. Zaharescu

• Book ID: 104372678
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 380 KB
• Volume: 35
• Category: Article
• ISSN: 0992-4361
• DOI: 10.1016/s0992-4361(98)80005-2

✦ Synopsis

The study of the subsolidus phase equilibrium in Cu-Sb-O system was started using samples with compositions laying, at room temperature, in the CuO-Sb203 subsystem. Isothermal and non-isothermal experiments were performed to analyze the system in the 500-1000°C range. At high temperatures (over 500°C) the system transforms in a quaternary one: CuO-Cu20-Sb203-Sb2Os as Sb203 undergoes oxidation to Sb204 and Sb205 and CuO reduces to Cu20. The formation of the CuSb206 and Cu4SbO4s binary compounds is reported. The calculations of mass variation and atomic composition modifications lead to a quaternary oxide representation of the subsolidus phase equilibrium.