Mechanical and thermal properties of chemical vapor infiltration engineered 2D-woven and 3D-braided carbon silicate composites. Issue 9 (November 2015)

• Record Type: Journal Article
• Authors: Gao, Yantao; Zhou, Haijun; Liu, Min; Ye, Linfeng; Xia, Huihao
• Is Part Of: Ceramics international. Volume 41:Issue 9(2015)Part A
• Page Start: 10949
• Page End: 10956
• Publication Date: 2015-11
• Subjects: A. SiCf/SiC composite -- B. Mechanical properties -- C. Thermal properties -- D. Fracture -- E. Woven and braided; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.05.038
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: SiCf /SiC composites reinforced with either two-dimensional woven or three-dimensional braided preforms were fabricated by the chemical vapor infiltration (CVI) process. The microstructure, mechanical and thermal properties of the composites were studied. In comparison, the 3D-braided out-performed 2D-woven composites based on the mechanical and thermal properties. The geometry and microstructure determinants of the properties of the composites were investigated. Additionally, we tested how resilient the SiCf /SiC composites were in contact with eutectic molten salt of LiF, NaF and KF to determine whether such materials could function in a molten salt reactor. The molten salt had minimal influence on mechanical properties of SiCf /SiC composites due to the SiC coating blocking the infiltration of molten salt. Our data demonstrated the feasibility of CVI produced SiCf /SiC composites with potential applications in molten salt reactor.