Continuous SiC Fibre-Reinforced SiC Matrix Composites: An Analysis Based on Patents

Abstract

Over 1800 SiCf/SiC patents have been searched and identified in this work. SiCf/SiC technologies are emerging rapidly from 2005 in China. However, the extremely low proportion of patents owned by companies indicates that more effort and focus on SiCf/SiC are extremely needed to enable industrial application. Statistical results of worldwide patents reveal that the modification of the mechanical properties is the most urgent demand in industry; meanwhile, the analysis results show that the CVI/CVD (chemical vapor infiltration /chemical vapor deposition) method appears promising to enhance the mechanical properties, as well as to improve the thermal conductivity and stability, to lower the costs and to enhance the controllability of the product.

The Microstructure and Shear Properties of SiC/SiC Composite Pins with Designed SiC Fiber Preform

“…The loading rate was 0.05mm/min for both single shear and double shear tests. The single shear strength and double shear strength was calculated by the following equations σ Sτ =P/πr 2 (1)…”

“…As new thermal structure materials, continuous silicon carbide fiber reinforced silicon carbide matrix composites (SiC/SiC) could be served under the harsh environment of high temperatures such as aviation, aerospace and nuclear industry duo to the unique thermal-mechanical loading and chemical stability [1][2][3][4][5]. In order to fabricate the large and/or geometrically complex SiC/SiC composite components, joints is one of the key issues should be solved for SiC matrix composites for engineering application.…”