Illustration of the liquid SiHfBOC precursor preparation process and schematic diagram of ablation mechanisms of HfO2-SiBOCbulk ceramic (IMAGE)

Tsinghua University Press

Illustration of the liquid SiHfBOC precursor preparation process and schematic diagram of ablation mechanisms of HfO2-SiBOCbulk ceramic

Caption

HfO₂-SiBOC ceramics feature a self-protective multilayer structure based on the Ellingham diagram, a polymer network with molecular-level-dispersed hafnium, and low-density characteristics, enabling excellent high-temperature ablation resistance. Compared with conventional ultra-high temperature ceramics (UHTCs), the obtained HfO₂-SiBOC ceramics exhibit near-nonablative behavior under oxyacetylene flame ablation at 2000°C.

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Journal of Advanced Ceramics, Tsinghua University Press

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