Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel nuclear high-performance SiCf/SiC composite material and preparation method thereof
The invention discloses a novel nuclear high-performance SiCf/SiC composite material and a preparation method thereof, and relates to the technical field of composite materials. The method comprises the following steps: obtaining two-dimensional SiCf/Ti-Si-C-O fiber cloth; the SiCf/Ti3SiC2 interface phase two-dimensional fiber cloth is obtained through RMI process gas phase siliconizing; the SiCf/Ti3SiC2 interface phase two-dimensional fiber cloth is soaked in the slurry suspension liquid, and SiCf/Ti3SiC2 interface/TiC-TiO2 fiber cloth is obtained; shaping is carried out, such that a SiCf/Ti3SiC2 interface/TiC-TiO2 preform is obtained; and embedding the SiCf/Ti3SiC2 interface/TiC-TiO2 preform into AlSi alloy powder, carrying out liquid-phase siliconizing by adopting an RMI process, and carrying out heat preservation for 30-60 minutes at 1250-1450 DEG C in a vacuum furnace, so as to obtain the novel nuclear high-performance SiCf/SiC composite material. By adopting the gas phase and liquid phase combined successive siliconizing process, the problems of poor air tightness and low heat conductivity of the current nuclear SiCf/SiC composite material can be solved, the anti-irradiation amorphization and damage tolerance of the material can be further enhanced, the structural strength of the SiCf/SiC composite material in the service process of a reactor is improved, and the safety margin of reactor design is improved.
本发明公开了一种新型核用高性能SiCf/SiC复合材料及其制备方法，涉及复合材料技术领域。所述方法包括得到二维SiCf/Ti‑Si‑C‑O纤维布；RMI工艺气相渗硅得到SiCf/Ti3SiC2界面相二维纤维布；将SiCf/Ti3SiC2界面相二维纤维布浸渍在浆料悬浮液中，得到SiCf/Ti3SiC2界面/TiC‑TiO2纤维布；定型得到SiCf/Ti3SiC2界面/TiC‑TiO2预制体；将SiCf/Ti3SiC2界面/TiC‑TiO2预制体包埋在AlSi合金粉末中，采用RMI工艺液相渗硅在真空炉中1250~1450℃保温30~60min，即得新型核用高性能SiCf/SiC复合材料。本发明采用气相与液相联合逐次渗硅工艺既可以解决当前核用SiCf/SiC复合材料气密性差、热导率低的问题，又可以进一步增强材料的抗辐照非晶化和损伤容限，提高SiCf/SiC复合材料在反应堆服役过程中的结构强度，提升反应堆设计的安全裕量。
Novel nuclear high-performance SiCf/SiC composite material and preparation method thereof
The invention discloses a novel nuclear high-performance SiCf/SiC composite material and a preparation method thereof, and relates to the technical field of composite materials. The method comprises the following steps: obtaining two-dimensional SiCf/Ti-Si-C-O fiber cloth; the SiCf/Ti3SiC2 interface phase two-dimensional fiber cloth is obtained through RMI process gas phase siliconizing; the SiCf/Ti3SiC2 interface phase two-dimensional fiber cloth is soaked in the slurry suspension liquid, and SiCf/Ti3SiC2 interface/TiC-TiO2 fiber cloth is obtained; shaping is carried out, such that a SiCf/Ti3SiC2 interface/TiC-TiO2 preform is obtained; and embedding the SiCf/Ti3SiC2 interface/TiC-TiO2 preform into AlSi alloy powder, carrying out liquid-phase siliconizing by adopting an RMI process, and carrying out heat preservation for 30-60 minutes at 1250-1450 DEG C in a vacuum furnace, so as to obtain the novel nuclear high-performance SiCf/SiC composite material. By adopting the gas phase and liquid phase combined successive siliconizing process, the problems of poor air tightness and low heat conductivity of the current nuclear SiCf/SiC composite material can be solved, the anti-irradiation amorphization and damage tolerance of the material can be further enhanced, the structural strength of the SiCf/SiC composite material in the service process of a reactor is improved, and the safety margin of reactor design is improved.
本发明公开了一种新型核用高性能SiCf/SiC复合材料及其制备方法，涉及复合材料技术领域。所述方法包括得到二维SiCf/Ti‑Si‑C‑O纤维布；RMI工艺气相渗硅得到SiCf/Ti3SiC2界面相二维纤维布；将SiCf/Ti3SiC2界面相二维纤维布浸渍在浆料悬浮液中，得到SiCf/Ti3SiC2界面/TiC‑TiO2纤维布；定型得到SiCf/Ti3SiC2界面/TiC‑TiO2预制体；将SiCf/Ti3SiC2界面/TiC‑TiO2预制体包埋在AlSi合金粉末中，采用RMI工艺液相渗硅在真空炉中1250~1450℃保温30~60min，即得新型核用高性能SiCf/SiC复合材料。本发明采用气相与液相联合逐次渗硅工艺既可以解决当前核用SiCf/SiC复合材料气密性差、热导率低的问题，又可以进一步增强材料的抗辐照非晶化和损伤容限，提高SiCf/SiC复合材料在反应堆服役过程中的结构强度，提升反应堆设计的安全裕量。
Novel nuclear high-performance SiCf/SiC composite material and preparation method thereof
一种新型核用高性能SiCf/SiC复合材料及其制备方法
LI XIAOQIANG (Autor:in) / ZHU WENJIE (Autor:in) / ZHENG CE (Autor:in) / WANG YUJIE (Autor:in) / REN YUWEI (Autor:in) / WEI CHONG (Autor:in) / WANG SHENGKAI (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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