“…Various systems have been developed so far of exceptional in some cases properties. Indicative systems with reinforcing phases, such as Al 2 O 3 [19][20][21][22][23], SiO 2 [24], Cr 2 O 3 [25], ZnO [26], SiC [27][28][29], B 4 C [30], WC [31], CNTs [32,33], Graphite [34], BN [35], Diamond [21,33], Si3N4 [27,36], CeO 2 [37], MoS 2 [38,39], PTFE [40,41], and combinations of them [42,43] are reported.…”