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The reaction process of zircon (ZrSiO4) in the andalusite (Al2SiO5)–zirconia system was studied at the temperatures from 1270 to 1460 °C. Phase compositions and microstructures of reaction products were analyzed by X-ray diffraction analysis, scanning electron microscopy and energy-dispersive spectrometer. The results show that andalusite starts to react with ZrO2 to form zircon and mullite at 1270 °C...
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