Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Ablation-resistant ZrB2-SiC-La2O3-SiC coating on surface of C-C composite material and preparation method of ablation-resistant ZrB2-SiC-La2O3-SiC coating
The invention discloses an ablation-resistant ZrB2-SiC-La2O3-SiC coating on the surface of a C-C composite material and a preparation method of the ablation-resistant ZrB2-SiC-La2O3-SiC coating. A SiC transition layer and a ZrB2-SiC-La2O3 composite coating are prepared through an embedding infiltration technology and an atmospheric plasma spraying method. The prepared multi-layer coating can bear the oxygen-acetylene flame ablation effect of 20 s, and a C-C composite material matrix is effectively protected. The ZrB2-SiC-La2O3 agglomerated powder prepared by a spray granulation technology is high in sphericity degree, good in fluidity, proper in particle size and uniform in component; the SiC transition layer effectively relieves the problem of mismatching of thermal expansion coefficients between the composite coating and a matrix, and the phenomena of coating cracking and peeling are reduced; and the ZrB2-SiC-La2O3-SiC coating has the effects of resisting high-temperature oxidation and airflow scouring at the same time, a generated multi-phase oxidation film effectively hinders oxygen erosion, and denudation and mass loss of a base body are avoided.
本发明公开了C‑C复合材料表面耐烧蚀ZrB2‑SiC‑La2O3‑SiC涂层及其制备方法。通过包埋渗技术和大气等离子喷涂法制备了SiC过渡层及ZrB2‑SiC‑La2O3复合涂层。制备的多层涂层能够承受20s的氧‑乙炔火焰烧蚀作用，有效保护C‑C复合材料基体。本发明通过喷雾造粒技术制备的ZrB2‑SiC‑La2O3团聚粉末球形度高、流动性好、粒径适宜、成分均匀；SiC过渡层有效缓解了复合涂层和基体之间的热膨胀系数不匹配问题，减少涂层开裂及剥落现象；ZrB2‑SiC‑La2O3‑SiC涂层同时具有抗高温氧化和气流冲刷效果，生成的多相氧化膜有效阻碍氧气侵蚀，避免基体剥蚀和质量损失。
Ablation-resistant ZrB2-SiC-La2O3-SiC coating on surface of C-C composite material and preparation method of ablation-resistant ZrB2-SiC-La2O3-SiC coating
The invention discloses an ablation-resistant ZrB2-SiC-La2O3-SiC coating on the surface of a C-C composite material and a preparation method of the ablation-resistant ZrB2-SiC-La2O3-SiC coating. A SiC transition layer and a ZrB2-SiC-La2O3 composite coating are prepared through an embedding infiltration technology and an atmospheric plasma spraying method. The prepared multi-layer coating can bear the oxygen-acetylene flame ablation effect of 20 s, and a C-C composite material matrix is effectively protected. The ZrB2-SiC-La2O3 agglomerated powder prepared by a spray granulation technology is high in sphericity degree, good in fluidity, proper in particle size and uniform in component; the SiC transition layer effectively relieves the problem of mismatching of thermal expansion coefficients between the composite coating and a matrix, and the phenomena of coating cracking and peeling are reduced; and the ZrB2-SiC-La2O3-SiC coating has the effects of resisting high-temperature oxidation and airflow scouring at the same time, a generated multi-phase oxidation film effectively hinders oxygen erosion, and denudation and mass loss of a base body are avoided.
本发明公开了C‑C复合材料表面耐烧蚀ZrB2‑SiC‑La2O3‑SiC涂层及其制备方法。通过包埋渗技术和大气等离子喷涂法制备了SiC过渡层及ZrB2‑SiC‑La2O3复合涂层。制备的多层涂层能够承受20s的氧‑乙炔火焰烧蚀作用，有效保护C‑C复合材料基体。本发明通过喷雾造粒技术制备的ZrB2‑SiC‑La2O3团聚粉末球形度高、流动性好、粒径适宜、成分均匀；SiC过渡层有效缓解了复合涂层和基体之间的热膨胀系数不匹配问题，减少涂层开裂及剥落现象；ZrB2‑SiC‑La2O3‑SiC涂层同时具有抗高温氧化和气流冲刷效果，生成的多相氧化膜有效阻碍氧气侵蚀，避免基体剥蚀和质量损失。
Ablation-resistant ZrB2-SiC-La2O3-SiC coating on surface of C-C composite material and preparation method of ablation-resistant ZrB2-SiC-La2O3-SiC coating
C-C复合材料表面耐烧蚀ZrB2-SiC-La2O3-SiC涂层及其制备方法
MIAO QIANG (Autor:in) / LIU YANGYANG (Autor:in) / LIANG WENPING (Autor:in) / LIN HAO (Autor:in)
21.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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