| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5457970 | International Journal of Refractory Metals and Hard Materials | 2017 | 5 Pages |
Abstract
Subsolidus relations and liquidus boundaries in the Ta2O3-WO3-SiO2 system at temperatures ranging from 1200 °C to 1500 °C were investigated. Phase diagrams were constructed. Compounds with stoichiometries of Ta22W4O67, Ta2WO8 and Ta16W18O94 formed in the Ta2O5-WO3 subsystem at 1200 °C. SiO2 was compatible with each of the compounds. A solid solution with a formula of (1 â x) Ta2O5·xWO3 formed on the Ta2O5-WO3 line in the compositional range of Ta2O5:WO3 > 11:4. SiO2 had a maximum solubility of 25% SiO2 in the solid solution. Liquid phase first appeared in the WO3-rich corner at 1300 °C. As the temperature was increased up to 1500 °C, the liquidus area boundary gradually expanded towards the SiO2- and the Ta2O5-rich corners.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Hongye Wang, Yuhong Chen, Zhangjun Bai, Baojun Zhao, Limeng Liu, Laner Wu,