MoSi2-modified Cf/SiC composites with enhanced mechanical performance and oxidation resistance
Source abstract
Abstract
Abstract Herein, we demonstrate the influence of MoSi2 addition on mechanical properties and high-temperature oxidation resistance of Cf/SiC-MoSi2p composites, synthesized by precursor infiltration pyrolysis (PIP) method. The results reveal that the incorporation of MoSi2 reduced the number of open pores and cracks in the composites and the flexural strength and modulus are significantly improved. The flexural strengths of Cf/SiC-MoSi2p composites in parallel and perpendicular direction were raised from 196 MPa and 160 MPa to 249 MPa and 197 MPa, which correspond to an increase of 27.0% and 23.1%, respectively. The oxidation resistance of Cf/SiC-MoSi2p composites at 1300℃ has also been improved due to the addition of MoSi2 particles. The post-oxidation structural and morphological characterization revealed that both SiC/MoSi2 matrix reacted with oxygen and formed a glass phase to heal the defects, which protected the carbon fibers and carbon interphase from oxidation.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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