Effect of oxygen partial pressure on grain boundary structure and grain growth behavior in BaTiO3

2006 ◽  
Vol 54 (10) ◽  
pp. 2849-2855 ◽  
Author(s):  
Y JUNG ◽  
S CHOI ◽  
S KANG
Keyword(s):  
Grain Boundary ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Grain Growth ◽  
Growth Behavior ◽  
Boundary Structure ◽  
Grain Boundary Structure ◽  
Effect Of Oxygen ◽  
Grain Growth Behavior

Boundary Structure-Dependent Grain Growth Behavior in Polycrystals: Model and Principle

2013 ◽  
Vol 753 ◽  
pp. 377-382 ◽  
Author(s):  
Suk Joong L. Kang
Keyword(s):  
Grain Growth ◽  
Microstructural Evolution ◽  
Driving Force ◽  
Coupling Effect ◽  
Normal Growth ◽  
Growth Behavior ◽  
Boundary Structure ◽  
Mixed Control ◽  
Grain Boundary Structure ◽  
Grain Growth Behavior

This paper reviews our recent investigations on grain growth in ceramics. Grain growth behavior has been found to be governed by the grain boundary structure: normal growth with a stationary relative grain size distribution for rough boundaries and non-normal (nonstationary) growth for faceted boundaries. Based on the concept of nonlinear migration of faceted boundaries, the mixed control model of grain growth is introduced and the principle of microstructural evolution is deduced. This principle states that various types of grain growth behavior are predicted as a result of the coupling effect between the maximum driving force for growth and the critical driving force for appreciable migration of the boundary. A wealth of experimental results supports the theoretical predictions of grain growth behavior, showing the generality of the suggested principle of microstructural evolution. Application of this principle is also demonstrated for the fabrication of single crystals as well as polycrystals with desired microstructures.

Grain boundary structure in TiO2-excess barium titanate

1998 ◽  
Vol 13 (12) ◽  
pp. 3449-3452 ◽  
Author(s):  
Takahisa Yamamoto ◽  
Yuichi Ikuhara ◽  
Katsuro Hayashi ◽  
Taketo Sakuma
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Grain Boundary ◽  
High Resolution Electron Microscopy ◽  
Growth Behavior ◽  
Boundary Structure ◽  
Grain Boundary Structure ◽  
Resolution Electron ◽  
Grain Growth Behavior ◽  
Electron Energy Loss

Grain boundary structure was examined in 0.1 mol% TiO2-excess BaTiO3 by high-resolution electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). Their grain boundaries were mostly faceted with {210} type habit. The faceted boundaries were characterized to be associated with an extra Ti–O2 bond with the rutile-like structure. The grain growth behavior in a small TiO2-excess BaTiO3 is discussed from the viewpoint of grain boundary structure.

Effect of oxygen partial pressure on grain-boundary transport in alumina

2018 ◽  
Vol 153 ◽  
pp. 205-213 ◽  
Author(s):  
Yan Wang ◽  
Helen M. Chan ◽  
Jeffrey M. Rickman ◽  
Martin P. Harmer
Keyword(s):  
Grain Boundary ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Effect Of Oxygen ◽  
Grain Boundary Transport

scholarly journals Grain and Grain Boundary Structure Evolution Without Texture Changes During Normal Grain Growth in 2-D Al Strips

1999 ◽  
Vol 32 (1-4) ◽  
pp. 187-195 ◽  
Author(s):  
V. Sursaeva ◽  
U. Czubayko ◽  
A. Touflin
Keyword(s):  
Grain Boundary ◽  
Grain Growth ◽  
Columnar Structure ◽  
Boundary Structure ◽  
Structure Evolution ◽  
Grain Boundary Character Distribution ◽  
Grain Boundary Character ◽  
Grain Boundary Structure ◽  
Texture Change ◽  
Character Distribution

Changes of the grain boundary character distribution and texture during normal grain growth have been investigated using the SAC-SEM based method and a 4 circle X-ray texture goniometer on A1 strips with columnar structure. The microstructure of the strips consists of regions with oriented (clusters) and randomly oriented grains. All changes of microstructure are outside the clusters during normal grain growth and consequently no texture change was observed.

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