Microstructure evolution and high-temperature mechanical properties of SiC f /SiC composites in liquid fluoride salt environment

Wang, Hongda; Qian, Feng; Wang, Zhen; Zhou, Haijun; Kan, Yanmei; Hu, Jianbao; Dong, Shaoming

doi:10.1016/j.corsci.2017.05.016

Cited by 16 publications

(2 citation statements)

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“…The CVI/CVD process is generally a relatively low temperature (900-1400 ℃) and low-pressure densification processing route compared with other advanced manufacturing methods and can be very versatile, which prevents the heat damage to fibers [226]. The CVI/CVD-derived ceramic matrix with high purity, high crystallinity, and near stoichiometry generally possesses more excellent mechanical, anti-oxidation and anti-ablation properties [227]. However, the CVI/CVD process typically takes 2-3 months to achieve required densities and is therefore highly expensive [228,229].…”

Section: Processing and Microstructures Of Uhtcmcsmentioning

confidence: 99%

Advances in ultra-high temperature ceramics, composites, and coatings

et al. 2021

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Ultra-high temperature ceramics (UHTCs) are generally referred to the carbides, nitrides, and borides of the transition metals, with the Group IVB compounds (Zr & Hf) and TaC as the main focus. The UHTCs are endowed with ultra-high melting points, excellent mechanical properties, and ablation resistance at elevated temperatures. These unique combinations of properties make them promising materials for extremely environmental structural applications in rocket and hypersonic vehicles, particularly nozzles, leading edges, and engine components, etc. In addition to bulk UHTCs, UHTC coatings and fiber reinforced UHTC composites are extensively developed and applied to avoid the intrinsic brittleness and poor thermal shock resistance of bulk ceramics. Recently, highentropy UHTCs are developed rapidly and attract a lot of attention as an emerging direction for ultra-high temperature materials. This review presents the state of the art of processing approaches, microstructure design and properties of UHTCs from bulk materials to composites and coatings, as well as the future directions.

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Section: Processing and Microstructures Of Uhtcmcsmentioning

confidence: 99%

Advances in ultra-high temperature ceramics, composites, and coatings

et al. 2021

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“…showed that the corrosion of SiC composites accelerated with temperature but the interlayer boundary in the SiC matrix was preferentially corroded because of higher intrinsic oxygen content [78].…”

Section: Wang Et Almentioning

confidence: 99%