High-temperature microstructural evolution of SiCN fibers derived from polycarbosilane with different C/N ratios

Zr‐doped SiOC ceramics fibers and the high‐temperature thermal performance

“…26 Moreover, a full series of silicon-based ceramics fibers including SiCN, SiOC and SiBCN were successfully prepared. [27][28][29] Zr element was further introduced to improve the anti-oxidation or thermal stability of the silicon-based ceramic fibers. Zhang et al produced ZrO 2 /SiC-based nanofiber membranes for high temperature thermal insulation by electrospinning and zirconium acetate precursors, and verified that Zr doping significantly improved the high temperature resistance up to 1400 • C. 30 Su et al obtained SiZrOC ceramic fibers with polyzirconosiloxane precursors, which were synthesized from two kinds of silicon alkoxides and ZrOCl 2 .…”

“…firstly prepared ultrafine SiC fibers with diameters of 1–3 µm by combining electrospinning and PDCs using PCS 26 . Moreover, a full series of silicon‐based ceramics fibers including SiCN, SiOC and SiBCN were successfully prepared 27–29 . Zr element was further introduced to improve the anti‐oxidation or thermal stability of the silicon‐based ceramic fibers.…”

SiC nanograins stabilized Si–C–B–N fibers with ultrahigh‐temperature resistance

“…Currently, several types of synthetic and commercial continuous ceramic fibers, including binary ceramic fibers, such as Al 2 O 3 , BN, and SiC fibers, and multiple ceramic fibers, such as Si–B–N, Si–C–N, and Si–C–B–N fibers, are available 5–9 . Among these fibers, Si–C–B–N fibers have attracted considerable interest owing to their remarkable oxidation resistance (up to 1500°C) and outstanding high‐temperature stability (up to 1800°C).…”

“…3,4 Currently, several types of synthetic and commercial continuous ceramic fibers, including binary ceramic fibers, such as Al 2 O 3 , BN, and SiC fibers, and multiple ceramic fibers, such as Si-B-N, Si-C-N, and Si-C-B-N fibers, are available. [5][6][7][8][9] Among these fibers, Si-C-B-N fibers have attracted considerable interest owing to their remarkable oxidation resistance (up to 1500 • C) and outstanding high-temperature stability (up to 1800 • C). The superior high-temperature stability of the SiBCN quaternary ceramic system was first reported by Riedel et al They reported that Si-C-B-N ceramics could exhibit amorphous structure and a very low loss weight loss at temperatures up to 2000 • C. 10 Müller et al synthesized Si 15 C 63 N 8 B 14 and Si 13 C 57 N 14 B 16 ceramics via a thermolysis of polymeric boron-containing silazanes [Si(CH = CH 2 ) 2 ⋅NH] n (n = 3, 4), which were mass stable at temperatures up to 2150 • C. 11,12 After that, Wang et al synthesized Si 2.9 B 1.0 C 14 N 2.9 , Si 3.9 B 1.0 C 11 N 3.2 , and Si 5.3 B 1.0 C 19 N 3.4 ceramics using a polymer-derived method.…”