Abstract
Abstract The effect of manganese doping on the mechanical properties of cordierite-based glass-ceramics series was investigated. The fracture toughness dependence on microstrain level of cordierite crystals was established. Two regions of increased fracture toughness were due to the crack front interactions with the microcracks and with the residual stress fields, respectively. The effect of doping on the thermal shock fracture resistance is associated with the decrease in the thermal coefficient of linear expansion of glass-ceramics.
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