A reinvestigation of phase equilibria in the system Al2O3-SiO2-ZnO

Hansson, R., Zhao, B. J., Hayes, P. C. and Jak, E. (2005) A reinvestigation of phase equilibria in the system Al2O3-SiO2-ZnO. Metallurgical And Materials Transactions B-process Metallurgy And Materials Processing Science, 36(B) 2: 187-193.


Author Hansson, R.
Zhao, B. J.
Hayes, P. C.
Jak, E.
Title A reinvestigation of phase equilibria in the system Al2O3-SiO2-ZnO
Journal name Metallurgical And Materials Transactions B-process Metallurgy And Materials Processing Science   Check publisher's open access policy
ISSN 1073-5615
Publication date 2005-04
Sub-type Article (original research)
DOI 10.1007/s11663-005-0019-y
Volume 36(B)
Issue 2
Start page 187
End page 193
Total pages 7
Editor David E Laughlin
Place of publication United States
Publisher A S M International
Collection year 2005
Language eng
Subject C1
290702 Mineral Processing
670800 Basic Metal Products (incl. Smelting)
091407 Pyrometallurgy
0904 Chemical Engineering
Abstract The phase equilibria and liquidus temperatures in the binary SiO2-ZnO system and in the ternary Al2O3-SiO2-ZnO system at low Al2O3 concentrations have been experimentally determined using the equilibration and quenching technique followed by electron probe X-ray microanalysis. In the SiO2-ZnO system, two binary eutectics involving the congruently melting willemite (Zn2SiO4) were found at 1448 +/- 5 degrees C and 0.52 +/- 0.01 mole fraction ZnO and at 1502 +/- 5 degrees C and 0.71 +/- 0.01 mole fraction ZnO, respectively. The two ternary eutectics involving willemite previously reported in the Al2O3SiO2-ZnO system were found to be at 1315 +/- 5 degrees C and 1425 +/- 25 T, respectively. The compositions of the eutectics are 0.07, 0.52, and 0.41 and 0.05, 0.28, and 0.67 mole fraction Al2O3, SiO2, and ZnO, respectively. The results of the present investigation are significantly different from the results of previous studies.
Keyword Diagram
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Q-Index Code C1

 
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