Development of SiC–Si composites with fine-grained SiC microstructures

Performance-properties and fabrication of the reaction sintered Si/SiC honeycomb materials for solar absorber application

“…In addition, the striation mark (dotted arrow) along the cleavage plane of the free Si shows that the result is in agreement with the previous studies. 23) Also, as shown in Fig. 6, it can confirm that closed pores are locally distributed in the interior fracture surface of all sintered bodies.…”

The rate-dependent fracture toughness of silicon carbide- and boron carbide-based ceramics

“…10. However, a survey of published data [20][21][22]25,[46][47][48] reveals that there is a limiting value of silicon content up to which fracture toughness increases, as shown in Fig. 11 along with the data generated in this study.…”

“…The inclusion of glassy [1] or metallic [19] secondary phases has been shown to decrease the brittleness and increase the fracture toughness value of ceramics. Newer processing techniques, such as reaction bonding, have been used to manufacture ceramics with increased fracture toughness while minimally compromising other material properties, such as density and hardness, compared to similar sintered ceramics [20][21][22][23][24][25]. In this study, a variety of reaction-bonded ceramic composites are compared to several pressureless-sintered ceramics to investigate the effect of microstructure on the fracture toughness value.…”

Influence of uni and bi-modal SiC composition on mechanical properties and microstructure of reaction-bonded SiC ceramics

“…This formation is exothermic. 18), 19) However, it is considered that some pores are not fully closed due to a fast growth of ¢-SiC, and the remained pores which are partially, could be filled by the excess Si. Namely, the pores of the green compacts are filled up with liquid Si so that after Si infiltration a practically dense specimen is obtained as shown in Table 2.…”