Abstract
This paper presents the preliminary results of our research on dynamic mechanical properties of silicon nitride based ceramics and ceramic composites at elevated temperatures. The temperature-dependent dynamic elastic modulus and internal damping of the cantilever beam samples were measured from room temperature up to 1100°C. The dynamic mechanical behavior is found to be rather stable up to 700°C, but damping peaks are found to occur at around 900°C, accompanied by a corresponding relaxation in elastic modulus for the tested samples. By simulating the thermal cycling environment of engines, the resulting changes in the dynamic mechanical properties of the samples are observed. The possible mechanisms affecting the dynamic mechanical properties of these ceramics and ceramic composites, with special emphasis on high-temperature behavior, are discussed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
