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Multi-element ultrahigh-temperature nano composite-phase ceramic-based composite material and preparation method thereof
The invention discloses a multi-element ultra-high-temperature nano composite-phase ceramic-based composite material and a preparation method thereof. The multi-element ultra-high-temperature nano composite-phase ceramic-based composite material is formed by compounding multi-element ultra-high-temperature nano composite-phase ceramic and a porous fiber body, the multi-element superhigh-temperature nano composite ceramic consists of oxygen-free silicon-based ceramic and multi-element transition metal carbonitride uniformly distributed in the oxygen-free silicon-based ceramic. The preparation method comprises the following steps: reacting at least two metal element complexes with a silicon-based polymer to obtain a single-source precursor polymer; and then putting the porous fiber body into a single-source precursor polymer solution, and carrying out multiple times of impregnation and cracking. The composite material provided by the invention has a nano composite structure, the superhigh-temperature ceramic is subjected to multi-element single-phase solid solution, the type, content and proportion of metal elements are adjustable, the superhigh-temperature ceramic is uniformly distributed in a matrix and has a nano-scale grain size, and meanwhile, the method can avoid damage to fibers in the preparation process; therefore, the mechanical property and the oxidation ablation resistance of the composite material are synchronously improved.
本发明公开了一种多元超高温纳米复相陶瓷基复合材料及其制备方法，所述多元超高温纳米复相陶瓷基复合材料由多元超高温纳米复相陶瓷与多孔纤维体复合而成，其中多元超高温纳米复相陶由无氧硅基陶瓷和均匀分布于其中的多元过渡金属碳氮化物组成，制备方法为：将至少两种金属元素配合物与硅基聚合物反应得到单源先驱体聚合物；然后将多孔纤维体置于单源先驱体聚合物溶液中进行多次浸渍裂解即得。本发明提供的复合材料具有纳米复合结构，超高温陶瓷多元素单相固溶，金属元素种类、含量和比例可调，基体中超高温陶瓷均匀分布且具有纳米级晶粒尺寸，同时该方法可避免制备过程中对纤维的损伤，从而实现复合材料力学性能和抗氧化烧蚀性能同步提升。
Multi-element ultrahigh-temperature nano composite-phase ceramic-based composite material and preparation method thereof
The invention discloses a multi-element ultra-high-temperature nano composite-phase ceramic-based composite material and a preparation method thereof. The multi-element ultra-high-temperature nano composite-phase ceramic-based composite material is formed by compounding multi-element ultra-high-temperature nano composite-phase ceramic and a porous fiber body, the multi-element superhigh-temperature nano composite ceramic consists of oxygen-free silicon-based ceramic and multi-element transition metal carbonitride uniformly distributed in the oxygen-free silicon-based ceramic. The preparation method comprises the following steps: reacting at least two metal element complexes with a silicon-based polymer to obtain a single-source precursor polymer; and then putting the porous fiber body into a single-source precursor polymer solution, and carrying out multiple times of impregnation and cracking. The composite material provided by the invention has a nano composite structure, the superhigh-temperature ceramic is subjected to multi-element single-phase solid solution, the type, content and proportion of metal elements are adjustable, the superhigh-temperature ceramic is uniformly distributed in a matrix and has a nano-scale grain size, and meanwhile, the method can avoid damage to fibers in the preparation process; therefore, the mechanical property and the oxidation ablation resistance of the composite material are synchronously improved.
本发明公开了一种多元超高温纳米复相陶瓷基复合材料及其制备方法，所述多元超高温纳米复相陶瓷基复合材料由多元超高温纳米复相陶瓷与多孔纤维体复合而成，其中多元超高温纳米复相陶由无氧硅基陶瓷和均匀分布于其中的多元过渡金属碳氮化物组成，制备方法为：将至少两种金属元素配合物与硅基聚合物反应得到单源先驱体聚合物；然后将多孔纤维体置于单源先驱体聚合物溶液中进行多次浸渍裂解即得。本发明提供的复合材料具有纳米复合结构，超高温陶瓷多元素单相固溶，金属元素种类、含量和比例可调，基体中超高温陶瓷均匀分布且具有纳米级晶粒尺寸，同时该方法可避免制备过程中对纤维的损伤，从而实现复合材料力学性能和抗氧化烧蚀性能同步提升。
Multi-element ultrahigh-temperature nano composite-phase ceramic-based composite material and preparation method thereof
一种多元超高温纳米复相陶瓷基复合材料及其制备方法
WEN QINGBO (Autor:in) / JIANG TIANXING (Autor:in) / LU LI (Autor:in) / XIONG XIANG (Autor:in) / WANG YALEI (Autor:in) / ZENG YI (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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