Investigation on SiCf / SiC Composites with SiBN Interface Processed through Chemical Vapor Infiltration. (2016)

• Record Type: Journal Article
• Authors: Sathiyamoorthy, R.; Soorya Prakash, K.; Sathishkumar, C.; Gopal, P.M.
• Is Part Of: Materials today. Volume 3:Number 10(2016)Part B
• Page Start: 4220
• Page End: 4225
• Publication Date: 2016
• Subjects: CMC -- Borosilicate Nitride interface -- CVI -- Tensile Strength -- Microstructure -- DTA; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2016.11.100
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The unidirectional Hi-Nicalon type-S fiber/SiC composites were fabricated by chemical vapor infiltration method and their microstructure, mechanical properties were examined. Borosilicate nitride interface coating was given to SiC fibers through low-pressure chemical vapor infiltration technique. Observations illustrate that specimen tensile strength initially increases and then decreases with increase in SiBN thickness achieving a maximum value of 90.6 MPa for the composite with 1000nm interface. Higher interface thickness increases the brittleness which results in decreased tensile properties. The temperature resistance characteristics of SiCf /SiC composites with SiBN interface were found to be stable at a maximum temperature of 1906.2°C.