Produção Nacional
Revisado por pares
Mechanical properties and ballistic behavior of LiF-added Al2O3–4 wt%Nb2O5 ceramics
2018; Elsevier BV; Volume: 7; Issue: 4 Linguagem: Inglês
10.1016/j.jmrt.2018.09.005
ISSN2214-0697
AutoresJheison Lopes dos Santos, Rubens Lincoln Santana Blazutti Marçal, Paulo Roberto Rodrigues de Jesus, Alaelson Vieira Gomes, Édio Pereira Lima Júnior, Daniel Navarro da Rocha, Maria Aparecida Pinheiro dos Santos, Lúcio Fábio Cassiano Nascimento, Sérgio Neves Monteiro, Luís Henrique Leme Louro,
Tópico(s)High-Velocity Impact and Material Behavior
ResumoFor the first time, the behavior of LiF-added alumina-niobia ceramics was quasi-static and dynamically analyzed in ballistic tests. Different compositions were investigated for the compound Al2O3–4 wt%Nb2O5–nLiF, with n ranging from 0 to 1.50 wt%, processed at three different sintering temperatures (1300, 1350 and 1400 °C). Elastic properties, elastic wave velocities, Vickers microhardness and ballistic tests were performed according to standards. The results showed that the LiF addition benefits the Al2O3–4 wt%Nb2O5 ceramic properties, allowing to reduce by approximately 100 °C the sintering temperature without impairing the ballistic performance. The Al2O3–4 wt%Nb2O5–0.5 wt%LiF ceramics exhibit comparable properties to the commonly used Al2O3–4 wt%Nb2O5 ceramics.
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