Spark plasma sintering influence on microstructure and mechanical properties of Ti:Ta/carbonitride ceramic matrix composites
A mechanically induced self-sustaining reaction was carried out to synthesize a Ti0.9Ta0.1C0.5N0.5/Co powdered cermets, and then they were sintered by spark plasma sintering. Microstructural parameters effects studied by image analysis, and chemical composition (studied by Rietveld analysis) on the...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/174036 |
| Acceso en línea: | https://hdl.handle.net/11441/174036 https://doi.org/10.1016/j.ijrmhm.2025.107094 |
| Access Level: | acceso abierto |
| Palabra clave: | Ceramic matrix composite Spark plasma sintering Microstructure Mechanical properties |
| Sumario: | A mechanically induced self-sustaining reaction was carried out to synthesize a Ti0.9Ta0.1C0.5N0.5/Co powdered cermets, and then they were sintered by spark plasma sintering. Microstructural parameters effects studied by image analysis, and chemical composition (studied by Rietveld analysis) on the microhardness, hardening rate, fracture toughness, transverse rupture strength, and Young’s modulus were related to the sintering conditions. The optimization of the sintering conditions (1150 ◦C, 30 MPa, and 8 min’ dwell time) drove to a homogeneous microstructure and outstanding mechanical properties. Also, the tantalum was suggested to influence the interfacial energies of the system, yielding a stronger hard phase skeleton. |
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