Tyranno-SA/SiC composite with SIC nanowires in the matrix by CVI process

摘要

A SiC nanowire/Tyranno-SA fiber-reinforced SiC/SiC composite was fabricated in situ. Mechanical behaviour during three-point bending were examined. The composite showed marked improvements on the flexural strength and work of fracture compared with a group of conventional Tyranno-SA/SiC composites. Web-like structures, formed from the original SiC nanowires in the composite, were readily observed within the fiber bundles that were not fully deposited with matrix. These web-like structures likely served as reinforcements together with the Tyranno-SA fibers, which provided additional strength and fracture tolerance in the composite. (C) 2004 Elsevier B.V. All rights reserved.