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Initial R-Curve Behaviour of SiAlON Ceramics

Many ceramics of interest for load-bearing applications exhibit the effect of an increasing crack growthresistance, KR, during crack extension, Δa, that is closely related to its microstructure. For a rising R-curvewith KR=f(Δa), after exceeding the so-called crack-tip toughness, KI0, stable crack extension occurs initiallyunder increasing load until eventually a final critical fracture event occurs. Especially … Weiterlesen …