Progress of a novel non-oxide Si-B-C-N ceramic and its matrix composites

Abstract

Abstract:In the past twenty years, Si-B-C-N ceramic has attracted wide attention due to its special structure and outstanding properties. The ceramic generally has an amorphous or a nano-crystalline structure, and has excellent structural stability, oxidation resistance, creep resistance and high-temperature mechanical properties, etc. Thus, Si-B-C-N ceramic attracts many researchers and finds potential applications in transportation, aerocraft, energy, information, microelectronics and environment, etc. Much work has been carried out on its raw materials, preparation processes, structural evolution, phase equilibrium and high-temperature properties. In recent years, many researchers focus on its new preparation methods, the preparation of dense ceramic sample with large dimensions, ceramic matrix composites reinforced by carbon fiber or SiC whisker, or components with various applications. Research on Si-B-C-N ceramic will develop our insight into the relationship between structures and properties of ceramics, and will be helpful to the development of novel high-performance ceramics. This paper reviews the preparation processes, general microstructures, mechanical, chemical, electrical and optical properties, and potential applications of Si-B-C-N ceramic, as well as its matrix composites.

Boron‐dependent microstructural evolution, thermal stability, and crystallization of mechanical alloying derived SiBCN

“…Figure presents the general XPS spectra for the boron‐rich SiBCN, suggesting the existence of Si, B, C, N, and O. Per Si 2p spectra, Si‐C peaks are observed at 101.4 (± 0.5) eV echoing C‐Si bonds at 282.9 (± 0.5) eV . Si‐O peaks positioned at 102.7 (± 0.5) eV are also detected, see Figure A.…”

“…Mechanical alloying (MA) is a solid‐state amorphization technique being used more and more extensively in materials science both for technological and for scientific reasons . The preparation of mechanical alloying derived amorphous SiBCN (MAed‐SiBCN) using cubic Si, graphite, and h‐BN as raw materials has been reported . In early studies, the microstructural evolution at different milling stages and the thermal stability of MAed‐SiBCN were investigated .…”

Crystallization Behavior of Amorphous Si2BC3N Ceramic Monolith Subjected to High Pressure

“…Si–B–C–N ceramics have recently received much attention due to their relatively low density, outstanding high‐temperature stability and excellent mechanical properties . They are greatly promising candidates for reentry aircraft nose cones, wing leading edge and turbine blades .…”

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

“…Continuous carbon fiber reinforced SiBCN (C f /SiBCN) composites are endowed with excellent high‐temperature mechanical properties, oxidation resistance, and creep resistance, meanwhile overcome the intrinsic brittleness and poor thermal shock resistance of bulk SiBCN ceramics . As a result, these materials are considered as one of the most promising candidates for applications in high‐performance thermal protection system (TPS) of hypersonic vehicles, such as leading edges and sharp noses .…”