Fabrication and residual stresses characterization of novel non-oxide multilayer ceramics

Effects of residual stresses on the fracture properties of non-oxide laminated composites

“…Further details on the microstructure are reported elsewhere. 16 The monolithic materials presented similar microstructural features. No trace of the junction between the stacked layers was found, such that these specimens resembled bulk materials.…”

“…More details of the processing are reported in Refs. 15,16 The relative densities of the sintered samples were measured by Archimede's method. On the polished cross section of the samples, the microstructure was analysed by scanning electron microscopy (SEM, Cambridge S360) and energy dispersive microanalysis (EDS, INCA Energy 300, Oxford instruments, UK).…”

SiC-based multilayered composites containing short carbon fibres obtained by tape casting

“…Several multilayer ceramics have been investigated in the past [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]; a wide range of materials have been studied, SiC [4][5][6][7][8][9][10], Si 3 N 4 [11,12], Al 2 O 3 and its composites [2,3,[13][14][15] or other compositions [16][17][18]. Pure ceramics [2][3][4][5][6][7][8][9][10][11][12], alternating layers structures [13][14][15][16]…”

“…Pure ceramics [2][3][4][5][6][7][8][9][10][11][12], alternating layers structures [13][14][15][16][17][18][19][20][21][22] sometimes containing composites [17][18] have been considered, and two main methods have been used to enhance toughness over conventional ceramics, namely the introduction of weak interfaces [4][5][6][7]13,14] or the presence of residual stresses [16,[18][19][20][21][22].…”

MoSi2 laminate processed by tape casting: Microstructure and mechanical properties' investigation

“…In the case of these materials MoSi 2 is used in order to improve the behaviour of other ceramics according to its intrinsic properties: Sciti and coworkers [54,55] prepared an AlN þ SiC þ MoSi 2 multilayer, where MoSi 2 is a minority phase (up to 30 vol.%) able to tailor electrical conductivity of the overall composite; Watanabe and co-workers [56,57] proposed an Al 2 O 3 /TiC/MoSi 2 þ Mo 2 B 5 multilayer, where MoSi 2 þ Mo 2 B 5 super-plastic layers are stacked in order to toughen Al 2 O 3 at high temperature.…”