Ablation behavior and mechanism of SiCf/Cf/SiBCN ceramic composites with improved thermal shock resistance under oxyacetylene combustion flow

Ablation behavior and mechanism of Cf/SiBCN composites in plasma ablation flame

“…However, catastrophic fracture doesn't happen in the SiC sf /C sf /SiBCN composites during the oxyacetylene ablation, demonstrating excellent thermal shock resistance. The linear and mass recession rates of SiC sf /C sf /SiBCN composites are 0.0523 mm s −1 and 0.00613 mg mm −2 s −1 , respectively . Li et al also studied the ablation properties and mechanisms of graphene reinforced SiBCN composites, which exhibit better ablation‐resistant property, with linear and mass recession rates as low as 0.0071 mm s −1 and 0.0121 mg mm −2 s −1 , respectively .…”

“…The linear and mass recession rates of SiC sf /C sf /SiBCN composites are 0.0523 mm s −1 and 0.00613 mg mm −2 s −1 , respectively. 17 Li et al also studied the ablation properties and mechanisms of graphene reinforced SiBCN composites, which exhibit better ablation-resistant property, with linear and mass recession rates as low as 0.0071 mm s −1 and 0.0121 mg mm −2 s −1 , respectively. 19 Compared with graphene reinforced SiBCN composites, continuous C f /SiBCN composites exhibit lower linear recession rate and higher mass recession rate.…”

“…15 To the authors' knowledge, ablation behavior has only been reported for chopped fibers (SiC sf , and C sf & SiC sf ) or graphene reinforced SiBCN composites, which are fabricated by mechanical alloying and hot-pressing sintering approach. [16][17][18][19] Ablation behavior of these composites is tested in an oxyacetylene combustion flame for a very short period of 10 s. It is revealed that graphene reinforced SiBCN composites exhibit the best ablation-resistant property, with linear and mass recession rates as low as 0.0071 mm s −1 and 0.0121 mg mm −2 s −1 , respectively. However, the research on ablation behavior and mechanism of continuous C f /SiBCN composites have not been reported.…”

Preparation and mechanical performance of Cf-SiCf-(Al2O3p) reinforced geopolymer composites

“…The short carbon fiber reinforced showed good mechanical properties with non-brittle failure behavior [21]. The SiC fiber exhibited similar mechanical properties as carbon fiber, and much higher oxidation resistance [24], which makes it a prominent high-temperature reinforcing candidate. However, compared with the carbon fibers, the SiC fiber is much expensive.…”

Ablation resistance of precursor derived Si-Hf-C-N(O) ceramics

“…However, the debonding of these coatings at high temperatures was a major concern. Recently, ablation resistance studies were performed on SiBCN based ceramic composites with fiber reinforcements such as SiC, C [23] and their combinations [24]. The fabrication of the above mentioned material systems were carried out using several methods comprising of chemical vapor infiltration [25,26], reactive melt infiltration [27], slurry infiltration by hot pressing [28], and precursor infiltration and pyrolysis (PIP) [29].…”