Work

Cyclic ablation behaviors of mullite‐modified C/C–ZrC–SiC composites prepared by PIP

Year: 2024

Type: article

Abstract: Four mullite‐modified C/C–ZrC–SiC composites with different contents were prepared by precursor infiltration and pyrolysis (PIP). The phase compositions, microstructures, and cyclic ablation behaviors of the composites under 2.38 MW/m 2 oxyacetylene flame were investigated. Results show that both insufficient and excessive amounts of mullite limit the ablation resistance of the composites. The composite with mullite content of 8.27 wt% has better ablation resistance, and the mass loss rate and linear loss rate after the second ablative are −0.873 mg/s and 0.272 µm/s, respectively. Appropriate mullite improves the viscosity and thermo‐oxidative barrier properties of the liquid phase and enhances the healing of ablative defects. Meanwhile, mullite inhibits the crystal transformation of ZrO 2 .

Source: Journal of the American Ceramic Society

DOI: 10.1111/jace.20270

Authors: Yufei Xiong, Qinchuan He, Yiqun Wang, Xuemin Yin

Institutions: Chengdu University of Technology, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Hong Kong Polytechnic University, Northwestern Polytechnical University

Language: English

Topic: Advanced ceramic materials synthesis

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection

Awards: G3265442824, G4746319076, G5926873092