Influência da adição de carbeto de titânio na densificação e microestrutura de cerâmicas de alumina dopadas com nióbia e fluoreto de lítio

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Pedro Henrique Poubel Mendonça da Silveira
Matheus Pereira Ribeiro
Thuane Teixeira da Silva
Pedro Craveiro Rodrigues dos Santos Credmann
Paulo Roberto Rodrigues de Jesus
Alaelson Vieira Gomes

Abstract

Ceramic matrix composites are objects of study in the ballistic sector due to the high hardness associated with fracture toughness and improved ballistic performance in multilayer shielding systems. Ceramics without the presence of dopants make processing difficult and may compromise the final properties of the sintered material. This work aimed at the ceramic processing of ceramic matrix composites based on Al2O3, with additions of 4 w% of Nb2O5, 0.5 w% of LiF and 38.5 w% of TiC, processed by conventional sintering at 1400 °C/1h. Ceramics without the presence of TiC showed high densification values, whereas samples with TiC additions had severe reductions in their densification, becoming an extremely fragile and brittle material.

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How to Cite
Poubel Mendonça da Silveira, P. H., Ribeiro, M. P., Teixeira da Silva, T., Rodrigues dos Santos Credmann, P. C., Rodrigues de Jesus, P. R., & Vieira Gomes, A. (2023). Influência da adição de carbeto de titânio na densificação e microestrutura de cerâmicas de alumina dopadas com nióbia e fluoreto de lítio. Revista Militar De Ciência E Tecnologia, 39(4), 105-118. Retrieved from http://ebrevistas.eb.mil.br/CT/article/view/9269
Section
Ciência dos Materiais