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A Reinvestigation of Phase Equilibria in the System Al^sub 2^O^sub 3^-SiO^sub 2^-ZnO
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Metallurgical and Materials Transactions
- Article date:
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April 1, 2005
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Copyright informationCopyright Minerals, Metals & Materials Society and ASM International Apr 2005. Provided by ProQuest LLC. (Hide copyright information)
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The phase equilibria and liquidus temperatures in the binary SiO^sub 2^-ZnO system and in the ternary Al^sub 2^O^sub 3^-SiO^sub 2^-ZnO system at low Al^sub 2^O^sub 3^ concentrations have been experimentally determined using the equilibration and quenching technique followed by electron probe X-ray microanalysis. In the SiO^sub 2^-ZnO system, two binary eutectics involving the congruently melting willemite (Zn^sub 2^SiO^sub 4^) were found at 1448 ± 5 °C and 0.52 ± 0.01 mole fraction ZnO and at 1502 ± 5 °C and 0.71 ± 0.01 mole fraction ZnO, respectively. The two ternary eutectics involving willemite previously reported in the Al^sub 2^O^sub 3^-SiO^sub 2^-ZnO system were found to be at ...
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