Refractory Materials, Metallurgical - ScienceDirect
1991-1-1 · Most industrial refractories are composed of metal oxides or of carbon, graphite or silicon carbide. Other newer refractory materials such as carbides, nitrides, borides and silicides are generally used only for special applications, because of economic considerations. The most commonly used refractory oxides are SiO 2, Al 2 O 3, MgO, CaO, Cr 2 O 3 and ZrO 2
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