Synergistic dual-conduction networks enable superior ablation resistance and thermal management in C/C-(Zr0.25Hf0.25Ti0·25Ta0.25)C-SiC composites
Source abstract
Abstract
The C/C-(Zr0.25Hf0.25Ti0.25Ta0.25)C (ZHTTC)-SiC composites with excellent thermal conductivities were designed and modified with mesophase pitch based carbon fiber (CFMP) and different carbon sources for matrix farbication. The carbon matrices and ZHTTC powders originated from mesophase pitch (MP) and polyimide (PI) carbon source respectively presented different microstructures. The dual-conduction network formed by CFMP and MP based matrix endowed the CMP/CMP-ZHTTCM-SiC composites with outstanding thermal conductivity, reaching 79.79 W/(m·K) in the in-plane (XY) direction. Remarkably, a surface temperature reduction of 100.3 °C was achieved during ablation, resulting in compact oxide layer formation and enhanced ablation resistance and a significantly reduced linear and mass ablation rate of 10.22 μm/s and 3.28 mg/s was achieved respectively.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Thermal properties of materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (51)
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