Creep durability of 3D woven SiC/SiC composites with (CVI+PIP) hybrid matrix

Authors

R.T. Bhatt, OAI/NASA Glenn Research Center, USAFollow

Conference Dates

November 5-9, 2017

Abstract

SiC/SiC composites are potential candidate materials for turbine components such as combustor liners, nozzle vanes and blades because of their low density, high temperature capability, and tailorable mechanical properties. The first generation of SiC/SiC composites fabricated by melt infiltration are being introduced in current engines. These materials are limited to 1315⁰C applications because of the presence of residual silicon in the SiC matrix. Currently there is an increasing interest in developing SiC/SiC composites without silicon for structural aerospace applications above 1315⁰C. The developmental 3D woven SiC/SiC composites with (CVI+PIP) hybrid matrix show potential for 1482⁰C applications. In this study 3D woven SiC/SiC composite specimens were creep tested at 1482⁰C at different stress levels until failure or for 1000hr without failure. The failed specimens were analyzed for under a scanning electron microscope to assess the damage mechanisms. The creep data of 3D woven SiC/SiC composites with (CVI+PIP) hybrid matrix were compared with those of full CVI SiC/SiC composites and sintered SiC from the literature. The potential benefits/limitations and durability of 3D woven SiC/SiC composites for turbine applications will be discussed

Recommended Citation

R.T. Bhatt, "Creep durability of 3D woven SiC/SiC composites with (CVI+PIP) hybrid matrix" in "Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration", Yutaka Kagawa, Tokyo University of Technology, Japan Dongming Zhu, NASA Glenn Research Center, USA Ram Darolia, GE Aviation (retired), USA Rishi Raj, University of Colorado, Boulder, USA Eds, ECI Symposium Series, (2017). https://dc.engconfintl.org/acmc/43