Liquidus and phase equilibria in CaO−SiO2−5%MgO−20%Al2O3−TiO2 system

The single hot thermocouple technique (SHTT) and high temperature equilibrium technique were combined to investigate the phase diagram of the CaO−SiO 2 −5%MgO−20%Al 2 O 3 −TiO 2 system. The 1300 °C to 1500 °C liquidus lines are calculated according to the thermodynamic equations based on the pseudo-...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Central South University 2017, Vol.24 (1), p.48-55
Main Authors: Sun, Li-feng, Shi, Jun-jie, Zhang, Bo, Qiu, Ji-yu, Wang, Zhao-yun, Jiang, Mao-fa
Format: Article
Language:English
Subjects:
Aluminum oxide
Engineering
Liquid phases
Magnesium oxide
Metallic Materials
Perovskites
Scanning electron microscopy
Silicon dioxide
Solid phases
Titanium dioxide
Titanium oxides
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The single hot thermocouple technique (SHTT) and high temperature equilibrium technique were combined to investigate the phase diagram of the CaO−SiO 2 −5%MgO−20%Al 2 O 3 −TiO 2 system. The 1300 °C to 1500 °C liquidus lines are calculated according to the thermodynamic equations based on the pseudo-melting temperatures measured by the single hot thermocouple technique. The phase equilibria relationships are experimentally determined at 1400 °C using the high temperature equilibria technique followed by X-ray fluorescence (XRF), X-ray diffraction(XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analysis. The liquid phase(L), melilite solid solution phase ((C 2 MS 2 ,C 2 AS)ss), diopside phase(CMS 2 ) and perovskite phase (CaO·TiO 2 ) are found. Coupled with the liquidus lines and equilibria results, the phase diagram is constructed for the specified region of the CaO−SiO 2 −5%MgO−20%Al 2 O 3 −TiO 2 system.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-017-3407-y