Development and tribological properties of SiC fibre reinforced CrB2 composite

Mechanical properties of B4C–CrB2 binary eutectic composites prepared by arc‐melting

“…Most of the CrB 2 ‐based composites were prepared by HP, which has the advantages of relatively low sintering temperature and good sintering quality. Mechanical properties of the CrB 2 ‐based composites are greatly affected by sintering additives, for example, Nb, 36 MoSi 2 , 3,35 EuB 6 , 37 and SiC fiber 38 . The H V of binary B 4 C–CrB 2 eutectic composite was higher than CrB 2 ‐based binary and ternary composites by solid‐state sintering.…”

“…Mechanical properties of the CrB 2 -based composites are greatly affected by sintering additives, for example, Nb, 36 MoSi 2 , 3,35 EuB 6 , 37 and SiC fiber. 38 The 𝐻 V of binary B 4 C-CrB 2 eutectic composite was higher than CrB 2 -based binary and ternary composites by solid-state sintering. Except of the SiC fiber-reinforced CrB 2 composites, 38 the 𝐾 IC of B 4 C-CrB 2 BE composite was higher than the others.…”

“…38 The 𝐻 V of binary B 4 C-CrB 2 eutectic composite was higher than CrB 2 -based binary and ternary composites by solid-state sintering. Except of the SiC fiber-reinforced CrB 2 composites, 38 the 𝐾 IC of B 4 C-CrB 2 BE composite was higher than the others. The addition of silicon carbide fiber can indeed enhance the fracture toughness of the composite, but the relative density and the hardness of the composite decreased with an increase of SiC f .…”

“…Hence, the crack propagation is not easy at the eutectic interface. The propagation of the indentation crack at the eutectic composition was predominantly transgranular mode (Figure 8C 3,7,11,[35][36][37][38] extended in mixed transgranular and intergranular modes (Figure 8A,B). Branching and bridging, which consume energy of crack propagation, prevent the crack from expanding, as toughening mechanisms were also found in the microstructure.…”

Microstructure, Thermo-Physical, Mechanical and Wear Properties of in-Situ Formed Boron Carbide - Zirconium Diboride Composite

“…Refractory metal borides, carbides and their composites are natural candidates for these tribological applications due to their exceptional hardness, elastic modulus and thermal stability at elevated temperatures [32][33][34][35][36][37][38]. Among these, boron carbide is one of the potential materials for wear resistant applications [25].…”