Decomposition of Al4O4C in the presence of C at high temperatures in vacuum

作者：Feng, Yuebin^*; Hou, Hailan; Yang, Bin; Yang, Baomin; Zi, Futing

来源：International Journal of Materials Research, 2018, 109(5): 399-404.

DOI：10.3139/146.111617

• Al4O4C
• Al2O
• Decomposition
• Condensation
• Vacuum

The decomposition of Al4O4C in the presence of C at 1473-1873 K in vacuum was researched using the condensation products with high content of Al4O4C, formed in the carbothermal reduction of Al-2,O-3 , as the raw materials. The results showed that Al4O4C decomposed into gaseous products at 1573-1873 K in vacuum. It was speculated that Al4O4C decomposed into Al-containing gaseous species, CO and O-2 , and then the O-2 reacted with C to form CO. The reaction of the O-2 with C made the decomposition of Al4O4C take place more easily. With the decrease in temperature, the Al-containing gaseous species and CO formed condensates mainly consisting of Al4O4C, Al4C3 and Al2O3, and also containing Al at experimental temperatures of 1773 K and 1873 K.

• 出版日期2018-5
• 单位昆明理工大学