In situ Reaction Synthesis and Mechanical Properties of TaC–TaSi 2 Composites
Source abstract
Abstract
TaC–TaSi 2 composites were fabricated at 1700°C by an in situ reaction/hot pressing method using Ta, Si, and graphite as initial materials. TaSi 2 content was 0–100 vol%. The microstructure and mechanical properties of the composites were investigated. It was found that the relative densities of composites were above 97.5% when the volume content of TaSi 2 was above 10%. The TaC/10 vol% TaSi 2 composite presented the highest flexural strength of 376 MPa. When the TaSi 2 content was 30–50 vol%, the composites showed the highest fracture toughness of about 4.3 MP·am 1/2 . In addition, the composites could retain high Young's modulus up to at least 1525°C.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
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