Estudo da densificação e formação de fases de cerâmicas de alumina dopadas com nióbia e fluoreto de lítio.

Main Article Content

Pedro Craveiro Credmann
Pedro Henrique Poubel Mendonça da Silveira
Matheus Pereira Ribeiro
Thuane Teixeira da Silva
Alaelson Vieira Gomes

Abstract

The properties of advanced ceramics allow their adoption as ballistic protection, especially the multilayred, which are in the first impact layer. Among these ceramics, alumina (Al2O3) has a lower cost due to its ease of obtaining, but it is limited to low flexion and fracture toughness. Thus, it is proposed the use of additives, such as niobium oxide (Nb2O5) and lithium fluoride (LiF), which have already shown improvements in the sintering and densification of the final material. Thus, the present work analyzed the influence of these compounds on alumina in order to observe the phase formation. There was an increase of about 14% in densification. Furthermore, the absence of impurities was verified through the phases in the XRD test. The SEM analyzes found a decrease in porosity and phases formed after sintering.

Downloads

Download data is not yet available.

Article Details

How to Cite
Craveiro Credmann, P., Poubel Mendonça da Silveira, P. H. ., Pereira Ribeiro, M. ., Teixeira da Silva, T. ., & Vieira Gomes, A. . (2023). Estudo da densificação e formação de fases de cerâmicas de alumina dopadas com nióbia e fluoreto de lítio. Revista Militar De Ciência E Tecnologia, 39(3), 230–243. Retrieved from https://ebrevistas.eb.mil.br/index.php/CT/article/view/9237
Section
Ciência dos Materiais
Author Biography

Thuane Teixeira da Silva