| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals
|
| Presentation Title |
Experimental Phase Diagram Study in CaO-MgO-V2O5 System |
| Author(s) |
Guishang Pei, Lilian Yang, Dapeng Zhong, Junyi Xiang, Xuewei Lv |
| On-Site Speaker (Planned) |
Guishang Pei |
| Abstract Scope |
The phase equilibria of the CaO–MgO–V2O5 at 773 K in air was constructed. For this study, numerous samples of various nominal compositions were prepared by a conventional solid state reaction. Two type solid-solutions of CaxMg1-x(VO3)2 (0≤x≤0.4) and CaxMg1-x(VO3)2 (0.4≤x≤1) were detected and verified in MgV2O6–CaV2O6 isopleths. The composition content of Ca2+=0.4 were intended to be the phase boundary of two kinds component-derived solid solutions. Only one stoichiometric compounds CaMgV2O7 was confirmed in the Mg2V2O7–Ca2V2O7 isopleths. In the isopleths of the Mg3V2O8–Ca3V2O8, one was a ternary CaxMg1-x(VO3)2 (0≤x≤0.4)–type solid solutions was detected. New experimental results in this work will serve as reliable input for future thermodynamic reassessments of the CaO-MgO-V2O5 ternary system within the CALPHAD-type framework, and expect to further improve the current V2O5-based multi-phase thermodynamic databases. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Phase Transformations |