The microstructure-mechanical properties relationships of BaTiO3
Journal
Ceramics International
Journal Volume
25
Journal Issue
1
Pages
35-40
Date Issued
1999
Author(s)
Abstract
Barium titanate (BaTiO3) specimens are sintered under different conditions to produce different microstructures. These microstructures are composed of fine grains or duplex grains or coarse (abnormal) grains. The mechanical properties are determined as a function of microstructure. Microcracks are generated together with the formation of abnormal grains. The presence of microcracks enhances the toughness of BaTiO3. The fracture of duplex-grained specimens originates from abnormal grains. The Weibull modulus of duplex-grained specimens is high for the size distribution of abnormal grains is narrow. There are only abnormal grains in the coarse-grained specimens. Microcracks are connected with one another in the specimens. The strength of the coarse-grained specimens is thus low. © 1998 Elsevier Science Limited and Techna S.r.l. All rights reserved.
SDGs
Type
journal article