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Meeting Materials Science & Technology 2019
Symposium Multifunctional Ceramic- and Metal-matrix Composites: Processing, Microstructure, Properties and Performance
Presentation Title Mechanical Strengthening of Aluminosilicate Composites with Graphene Oxide Fillers
Author(s) Pratish Rao, Madison Diane Sitkiewicz, Krishna Muralidharan, Moe Momayez, Keith Runge
On-Site Speaker (Planned) Madison Diane Sitkiewicz
Abstract Scope Ceramic materials such as aluminosilicates(AS)are valued as an important class of materials due to their inherent chemical and degradation resistance, low thermal expansion, and high stiffness. However, the brittle nature of AS limits their potential in load bearing applications. In this research, we investigated the possible strength enhancements in AS based systems by the addition of surface modified GO fillers which intrinsically have high tensile strength and modulus. Systematic experiments were performed by varying GO content and a comparison of mechanical properties was performed with baseline AS systems. The compressive strength of the AS-GO composites was found to be significantly enhanced, which is directly attributed to the presence of GO sheets. Furthermore, atomic force microscopy based indentation was carried out on AS-GO composites and the response, when fitted to a Hertz model, demonstrated a higher elastic modulus of the AS -GO composites as compared to the unfilled AS systems.


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