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Carbon-based composite material with long-life ultra-high-temperature micro-ablation (Hf-Zr-Ta) C solid solution ceramic coating on surface and preparation method of carbon-based composite material
The invention discloses a carbon-based composite material with a long-service-life ultra-high-temperature micro-ablation (Hf-Zr-Ta) C solid solution ceramic coating on the surface and a preparation method thereof.The carbon-based composite material comprises a base body and a coating, and the method comprises the steps that a SiC transition layer is prepared on the surface of the carbon-based composite material through an embedding infiltration method; then, preparing a (Hf-Zr-Ta) C solid solution ceramic coating on the SiC transition layer by adopting SAPS (silicoaluminophosphate); the preparation method comprises the following steps: preparing a (Hf-Zr-Ta) C solid solution ceramic coating on the surface of a carbon-based composite material coated with a SiC transition layer by adopting SAPS; (Hf-Zr-Ta) C forms a composite oxide consisting of high-melting-point (Hf, Zr) O2 and low-oxygen diffusion coefficient (Hf, Zr) 6Ta2O17 in an ablation environment, so that not only can the scouring of high-speed airflow be resisted, but also oxygen can be prevented from diffusing into the coating; besides, in the cooling process, peritectic transformation of molten oxide mainly comprising (Hf, Zr) O2 and Ta to (Hf, Zr) 6Ta2O17 counteracts volume expansion caused by phase transformation from t-(Hf, Zr) O2 to m-(Hf, Zr) O2, and generation and expansion of cracks in the coating are reduced. The compact and stable oxide layer enables the (Hf-Zr-Ta) C solid solution ceramic coating to show excellent ablation resistance.
本发明公开了一种表面具有长寿命超高温微烧蚀(Hf‑Zr‑Ta)C固溶体陶瓷涂层的碳基复合材料及其制备方法，碳基复合材料包括基体和涂层，其方法包括采用包埋熔渗法在碳基复合材料表面制备了SiC过渡层，然后采用SAPS在SiC过渡层上制备了(Hf‑Zr‑Ta)C固溶体陶瓷涂层；本发明采用SAPS在包覆有SiC过渡层的碳基复合材料表面制备出(Hf‑Zr‑Ta)C固溶体陶瓷涂层；(Hf‑Zr‑Ta)C在烧蚀环境下形成由高熔点(Hf,Zr)O2和低氧扩散系数(Hf,Zr)6Ta2O17组成的复合氧化物，不仅能抵抗高速气流的冲刷，而且能阻碍氧气向涂层内部的扩散；另外，在冷却过程中，(Hf,Zr)O2和Ta为主的熔融氧化物向(Hf,Zr)6Ta2O17的包晶转变抵消了t‑(Hf,Zr)O2到m‑(Hf,Zr)O2的相变引发的体积膨胀，减少了涂层中裂纹的萌生和扩展。致密、稳定的氧化层使得(Hf‑Zr‑Ta)C固溶体陶瓷涂层表现出优异的抗烧蚀性能。
Carbon-based composite material with long-life ultra-high-temperature micro-ablation (Hf-Zr-Ta) C solid solution ceramic coating on surface and preparation method of carbon-based composite material
The invention discloses a carbon-based composite material with a long-service-life ultra-high-temperature micro-ablation (Hf-Zr-Ta) C solid solution ceramic coating on the surface and a preparation method thereof.The carbon-based composite material comprises a base body and a coating, and the method comprises the steps that a SiC transition layer is prepared on the surface of the carbon-based composite material through an embedding infiltration method; then, preparing a (Hf-Zr-Ta) C solid solution ceramic coating on the SiC transition layer by adopting SAPS (silicoaluminophosphate); the preparation method comprises the following steps: preparing a (Hf-Zr-Ta) C solid solution ceramic coating on the surface of a carbon-based composite material coated with a SiC transition layer by adopting SAPS; (Hf-Zr-Ta) C forms a composite oxide consisting of high-melting-point (Hf, Zr) O2 and low-oxygen diffusion coefficient (Hf, Zr) 6Ta2O17 in an ablation environment, so that not only can the scouring of high-speed airflow be resisted, but also oxygen can be prevented from diffusing into the coating; besides, in the cooling process, peritectic transformation of molten oxide mainly comprising (Hf, Zr) O2 and Ta to (Hf, Zr) 6Ta2O17 counteracts volume expansion caused by phase transformation from t-(Hf, Zr) O2 to m-(Hf, Zr) O2, and generation and expansion of cracks in the coating are reduced. The compact and stable oxide layer enables the (Hf-Zr-Ta) C solid solution ceramic coating to show excellent ablation resistance.
本发明公开了一种表面具有长寿命超高温微烧蚀(Hf‑Zr‑Ta)C固溶体陶瓷涂层的碳基复合材料及其制备方法，碳基复合材料包括基体和涂层，其方法包括采用包埋熔渗法在碳基复合材料表面制备了SiC过渡层，然后采用SAPS在SiC过渡层上制备了(Hf‑Zr‑Ta)C固溶体陶瓷涂层；本发明采用SAPS在包覆有SiC过渡层的碳基复合材料表面制备出(Hf‑Zr‑Ta)C固溶体陶瓷涂层；(Hf‑Zr‑Ta)C在烧蚀环境下形成由高熔点(Hf,Zr)O2和低氧扩散系数(Hf,Zr)6Ta2O17组成的复合氧化物，不仅能抵抗高速气流的冲刷，而且能阻碍氧气向涂层内部的扩散；另外，在冷却过程中，(Hf,Zr)O2和Ta为主的熔融氧化物向(Hf,Zr)6Ta2O17的包晶转变抵消了t‑(Hf,Zr)O2到m‑(Hf,Zr)O2的相变引发的体积膨胀，减少了涂层中裂纹的萌生和扩展。致密、稳定的氧化层使得(Hf‑Zr‑Ta)C固溶体陶瓷涂层表现出优异的抗烧蚀性能。
Carbon-based composite material with long-life ultra-high-temperature micro-ablation (Hf-Zr-Ta) C solid solution ceramic coating on surface and preparation method of carbon-based composite material
一种表面具有长寿命超高温微烧蚀(Hf-Zr-Ta)C固溶体陶瓷涂层的碳基复合材料及其制备方法
LI TAO (author) / ZHANG JIANHUA (author) / ZHANG YULEI (author) / FU YANQIN (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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