Abnormal expansion behavior of Cf/SiC containing intra-bundle Si3N4 matrix

Key Points

• Abnormal expansion behavior was observed in composites under specific conditions, raising concerns about stability.
• The expansion metrics showed deviations significantly beyond expected levels, suggesting structural integrity issues.
• Assessment utilized techniques involving mechanical testing and material characterization, highlighting the underlying issues with composites.
• Findings imply potential limitations in using Si3N4 as a matrix in Cf/SiC composites, affecting their practical applications.