Al2O3-Based Ceramic Composites with a High Brittle Fracture Resistance


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

We examine synthesis conditions of precursors to ZrO2–Al2O3–CeO2 powders modified with calcium cations. The precipitation procedure and the aging of reaction systems of precursors to the synthesized composites are shown to influence the morphology and particle size of the nanopowders and the evolution of the phase composition, microstructure, and mechanical characteristics of composites prepared from them. The composites offer a high brittle fracture resistance due to the combined effect of transformation and dispersion hardening owing to the presence of T-ZrO2-based solid solutions and calcium hexaaluminates (bending strength, up to 1000 MPa; fracture toughness KIc, up to 10.5 MPa m1/2).

Sobre autores

L. Podzorova

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Autor responsável pela correspondência
Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

A. Il’icheva

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

O. Pen’kova

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

O. Antonova

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

A. Baikin

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

A. Konovalov

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: ludpodzorova@gmail.com
Rússia, Leninskii pr. 49, Moscow, 119334

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Inc., 2019