“…8 that the propagation path of indentation cracks shows crack deflection (mark A) and branching (mark B). Crack deflection has been identified as a major toughening mechanism in MoSi 2 -base composites [24], and similar phenomena have been reported in SiC [32] and ZrO 2 [33] toughened MoSi 2 composites. Faber and Evans [34] have reported that the mechanism of fracture toughness enhancement in ceramics was crack deflection around second phase particles, such as Al 2 O 3 reinforcements in MoSi 2 matrix.…”
“…8 that the propagation path of indentation cracks shows crack deflection (mark A) and branching (mark B). Crack deflection has been identified as a major toughening mechanism in MoSi 2 -base composites [24], and similar phenomena have been reported in SiC [32] and ZrO 2 [33] toughened MoSi 2 composites. Faber and Evans [34] have reported that the mechanism of fracture toughness enhancement in ceramics was crack deflection around second phase particles, such as Al 2 O 3 reinforcements in MoSi 2 matrix.…”
“…The SPS process has been applied to fabricate various types of materials, e.g., SiC, Al 2 O 3 and Si 3 N 4 etc. [15,16]. In a previous study, the SPS technique was successfully applied to sinter AlN ceramics, and the result was promising.…”
“…In all other works reporting of the fibrous morphology in the SHS products the combustion has taken place in metal/ gas mode [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Apparently, this is the key for combustion synthesis of ultrafine/nano-sized ceramic fibers.…”
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