| Texto completo | |
| Autor(es): |
Damaceno, Matheus dos Santos Dias
;
Meyer, Yuri Alexandre
;
Ortiz, Eder Lopes
;
Padilha, Giovana da Silva
;
Osorio, Wislei Riuper
;
Bortolozo, Ausdinir Danilo
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS; v. 18, n. 12, p. 16-pg., 2025-06-07. |
| Resumo | |
This study investigates the influence of the HfB2 content and sintering method on the mechanical behavior of Ti2AlC-based composites. Compositions containing 0-10 wt.% HfB2 are processed via conventional and microwave sintering at 1200 degrees C for 30 min. X-ray diffraction and scanning electron microscopy analyses have confirmed the formation of the Ti2AlC and HfB2 phases, whereas the TiC phase is predominantly observed in samples processed by conventional sintering. The highest hardness (similar to 475 HV) and compressive strength (similar to 450 MPa) are that of the composite containing 5 wt.% HfB2 associated with a porosity reduction of approximately 10%. These improvements are attributed to the enhanced densification and microstructural refinement achieved via microwave processing. The findings underscore the potential of HfB2 addition and microwave sintering in tailoring the structure-property relationships of the Ti2AlC composites, enabling applications at high-temperature filtration, thermal barriers, and self-lubricating components. (AU) | |
| Processo FAPESP: | 16/13352-0 - Influência do aquecimento por micro-ondas na correlação microestrutura-propriedades dos compostos pertencentes a família MAX. |
| Beneficiário: | Ausdinir Danilo Bortolozo |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |