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Dependent Thermo-Mechanical Behavior of Novel Alumina-Based Refractories

A. Böhm, C.G. Aneziris, J. Malzbender

Journal of Ceramic Science and Technology, Vol. 5, No. 2 (2014), pp. 167-171

DOI: 10.4416/JCST2014-00001

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Abstract

Novel alumina-based refractories were assessed with regard to their thermo-mechanical behavior from room temperature to 1000 °C within the framework of the DFG SPP "FIRE" program. These refractories are being developed for use in slide gates or entry nozzles. Their elastic behavior was investigated with the impulse excitation technique. Wedge splitting tests were used to determine their fracture resistance behavior. The evaluated material characteristics and thermal shock resistance were compared to those of a standard refractory material, permitting conclusions to be drawn regarding the effect of the additives used (TiO2, ZrO2) on apparent elastic behavior, crack propagation and thermal shock resistance.

Keywords

Refractories, ceramics, elastic modulus, fracture, thermal shock

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