Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon nanosheet toughened PyC/SiC composite interface and preparation method thereof
The invention relates to a SiCf/SiC composite material, in particular to a carbon nanosheet toughened PyC/SiC composite interface and a preparation method thereof.A PyC interface, CNS and a SiC interface are sequentially deposited on the surface of a fiber preform through a chemical vapor deposition technology, the defects of a single PyC weak interface and a single SiC strong interface are overcome, combination of the SiC interface and the PyC interface is enhanced by means of the pinning effect of the CNS, the brittleness of the SiC interface is improved, and the strength of the carbon nanosheet toughened PyC/SiC composite interface is improved. According to the preparation method, brittle fracture of the ceramic composite material is effectively avoided, so that the safety and the reliability of a ceramic composite material part are improved, and the service life of the part is prolonged by 30%.
本发明涉及SiCf/SiC复合材料，具体涉及一种碳纳米片增韧PyC/SiC复合界面及其制备方法，通过化学气相沉积工艺在纤维预制体表面依次沉积PyC界面、CNS和SiC界面，弥补单一PyC弱界面和单一SiC强界面的不足，利用CNS的钉扎效应增强SiC界面与PyC界面的结合，改善SiC界面的脆性，从而通过界面改性提升SiCf/SiC复合材料的强度和韧性，本发明有效避免陶瓷复材的脆性断裂，使得陶瓷复材零件的安全性和可靠性得以改进，零件使用寿命延长30%。
Carbon nanosheet toughened PyC/SiC composite interface and preparation method thereof
The invention relates to a SiCf/SiC composite material, in particular to a carbon nanosheet toughened PyC/SiC composite interface and a preparation method thereof.A PyC interface, CNS and a SiC interface are sequentially deposited on the surface of a fiber preform through a chemical vapor deposition technology, the defects of a single PyC weak interface and a single SiC strong interface are overcome, combination of the SiC interface and the PyC interface is enhanced by means of the pinning effect of the CNS, the brittleness of the SiC interface is improved, and the strength of the carbon nanosheet toughened PyC/SiC composite interface is improved. According to the preparation method, brittle fracture of the ceramic composite material is effectively avoided, so that the safety and the reliability of a ceramic composite material part are improved, and the service life of the part is prolonged by 30%.
本发明涉及SiCf/SiC复合材料，具体涉及一种碳纳米片增韧PyC/SiC复合界面及其制备方法，通过化学气相沉积工艺在纤维预制体表面依次沉积PyC界面、CNS和SiC界面，弥补单一PyC弱界面和单一SiC强界面的不足，利用CNS的钉扎效应增强SiC界面与PyC界面的结合，改善SiC界面的脆性，从而通过界面改性提升SiCf/SiC复合材料的强度和韧性，本发明有效避免陶瓷复材的脆性断裂，使得陶瓷复材零件的安全性和可靠性得以改进，零件使用寿命延长30%。
Carbon nanosheet toughened PyC/SiC composite interface and preparation method thereof
一种碳纳米片增韧PyC/SiC复合界面及其制备方法
LIU XUESONG (Autor:in) / ZHANG JIAPING (Autor:in) / LI HAO (Autor:in) / CHANG LONGFEI (Autor:in) / LUO TIANYI (Autor:in)
03.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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