Skip to main content

The Mechanism of Core/Shell Structure Formation During Sintering of BaTiO3‐Based Ceramics

Buy Article:

$51.00 plus tax (Refund Policy)


The mechanism of core/shell formation during sintering in BaTiO3‐based systems was studied in (Mg, Y)‐doped BaTiO3. The effect of ball milling time on core size and shell thickness was first observed. The core size was similar irrespective of ball milling time whereas the shell thickness increased with increasing ball milling time. The measured powder size after ball milling suggested that the cores were from the larger BaTiO3 particles and the shells formed via dissolution of smaller particles and precipitation of dissolved material, in contrast with the interpretation of the results of a previous investigation. To identify the core/shell formation mechanism, bi‐layer samples with different chemical compositions, 94BaTiO3–2Y2O3–2MgO–2SiO2 (mol%) (BTYMS) and 98BaTiO3–2SiO2 (mol%) (BTS), and different grain sizes were prepared. The morphology of the newly formed shell layer and the shape of an {111} twin across the interface between a core and a shell confirmed that the formation mechanism of the core/shell structure during sintering is the dissolution and precipitation of material rather than solid‐state diffusion of solutes into BaTiO3.

Document Type: Research Article


Publication date: 2012-08-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more