A new refractory composite based on calcium aluminate silicate for induction furnaces

A ductile refractory composite (DURATEC-XP) was developed by Promat International with a designed microstructure to optimize properties required for use in applications where combined resistance to cyclic attack of thermal, electrical and mechanical impact are needed. More specific, the material possesses high bending strength of 45 MPa, impact resistance of 30 kJ/m2, low thermal expansion coefficient, good electric insulation and good machinability. In this paper, a ductile refractory composite for electric insulation is described with optimized resistance towards crack propagation in a broad temperature range.