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Si3N4 bonded MgO–C refractory was formed in situ using silicon powder as a raw material through the nitriding processing. The effects of sintering temperature on the microstructural evolution and physical properties of the in situ formed Si3N4 bonded MgO–C refractory were investigated. The results showed that α–Si3N4 and β–Si3N4 were generated from the reaction of Si–N2 in MgO–C refractories at 1450°C...
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