caa a22 4500 46321479X CHVBK 20180405153153.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s00339-006-3752-4 doi (NATIONALLICENCE)springer-10.1007/s00339-006-3752-4 On the toughening mechanisms of MoSi2 reinforced Si3N4 ceramics [Elektronische Daten] [D. Sciti, G. Celotti, G. Pezzotti, S. Guicciardi] The toughness increment occurring in Si3N4-based composites due to the addition of MoSi2 particles was compared to the predictions of theoretical models based on the combination of residual stresses and crack deflection toughening mechanisms. A direct application of theoretical models led to a substantial discrepancy between predicted and observed values. For this reason, the basic parameters of the theoretical models were experimentally evaluated. The residual stresses were assessed by measuring the strain in the reinforcing particles by X-ray diffraction. Moreover, the MoSi2 interparticle distance was calculated by image analysis and the crack paths were analyzed in order to check the actual extent of crack deflection. The overall toughness increase recalculated as the sum of the newly estimated values of residual stresses and crack deflection contributions, was shown to be in good agreement with the experimental results. Springer-Verlag, 2006 Sciti D. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut Celotti G. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut Pezzotti G. Department of Chemistry and Materials Technology, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan aut Guicciardi S. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut Applied Physics A Springer-Verlag 86/2(2007-02-01), 243-248 0947-8396 86:2<243 2007 86 339 https://doi.org/10.1007/s00339-006-3752-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-006-3752-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sciti D. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut NATIONALLICENCE 700 1- Celotti G. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut NATIONALLICENCE 700 1- Pezzotti G. Department of Chemistry and Materials Technology, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8585, Kyoto, Japan aut NATIONALLICENCE 700 1- Guicciardi S. Institute of Science and Technology for Ceramics, CNR-ISTEC, Via Granarolo 64, 48018, Faenza, Italy aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 86/2(2007-02-01), 243-248 0947-8396 86:2<243 2007 86 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer