Effect of NiO addition on the sintering and grain growth behaviour of BaTiO3
Journal
Ceramics International
Journal Volume
25
Journal Issue
1
Pages
69-75
Date Issued
1999
Author(s)
Abstract
The sintering and grain growth behaviour of NiO-doped BaTiO3 in air are investigated in the present study. The solubility of NiO in BaTiO3 is determined by measuring the lattice constant of BaTiO3 as a function of NiO content. The solubility is around 0.13wt% as sintering temperature ranges from 1250 to 1330°C. The densification Of BaTiO3 is retarded due to the solution of NiO. Possible mechanism is proposed. The existence of residual NiO inclusions also reduces the densification rate. The adding of NiO inhibits the grain growth Of BaTiO3. For the BaTiO3 doped with 0.13 wt% NiO, no abnormal grains are observed. © 1998 Elsevier Science Limited and Techna S.r.l. All rights reserved.
Type
journal article