Abstract
Abstract Thermal shock parameters (R, R‴ and R‴′) have been calculated using measured strength and modulus values for model magnesia-spinel composite materials. The R‴ and R‴′ parameters vary with both spinel content (0–30%) and spinel particle size (3–22 μm). In general, the larger the spinel content, the higher the values of R‴ and R‴′. It is predicted that the coarsest (22 μm) spinel provides a significant improvement in resistance to thermal shock damage through maximised difficulty of crack propagation, with a maximum at ∼20% addition. These predictions were also matched by thermal shock testing. After quenching from 1000 °C, the 20% 22 μm spinel composite had a retained strength ∼4.5 times higher than that for similarly quenched pure magnesia.
Sign-in/Register to access full text options 
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.
