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- W4387504114 abstract "A high-pressure assisted precursor impregnation pyrolysis method (PIP) was used to prepare 3D PyC-Cf/SiHfBOC composites. Its anti-ablation properties were tested in an oxygen-acetylene torch ablation environment exceeding 2000 °C. They revealed the ablation behavior and mechanism of SiHfBOC ceramics, carbon fiber, and the PyC interface layer. Under the action of Hf modification, a dense HfO2-SiO2 oxide layer was formed in situ on the surface of 3D PyC Cf/SiHfBOC composites, effectively preventing further ablation of the composite's matrix by high-temperature oxidation gases. During the ablation process of an oxyacetylene torch at 2000 °C, it still exhibits excellent anti-ablation properties (linear ablation rate of 1.10 × 10−4 mm s−1). This work enriches the system of hafnium containing ultra-high temperature ceramic precursors and their composites, which provides beneficial exploration for their application in the ultra-high temperature field." @default.
- W4387504114 created "2023-10-11" @default.
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- W4387504114 date "2023-10-01" @default.
- W4387504114 modified "2023-10-12" @default.
- W4387504114 title "Ablation behavior of 3D PyC-Cf/SiHfBOC Composites under an oxyacetylene torch environment above 2000 °C" @default.
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- W4387504114 doi "https://doi.org/10.1016/j.ceramint.2023.10.087" @default.
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