Ravi, V and Kutty, TRN (1992) A Novel Method for the Uniform Incorporation of Grain-Boundary Layer Modifiers in Positive Temperature Coefficient of Resistivity Barium Titanate. In: Journal of the American Ceramic Society, 75 (1). pp. 203-205.Full text not available from this repository.
The presently developed two-stage process involves diping the prefired porous disks of n-BaTiO3 in nonaqueous solutions containing Al-buty rate, Ti-isopropoxide, and tetraethyl silicate and subsequent sintering. This leads to uniform distribution of the grain-boundary layer (GBL) modifiers (Al2O3+ TiO2+ SiO2) and better control of the grain size as well as the positive temperature coefficient of resistivity characteristics. The technique is particularly suited for GBL modifiers in low concentrations (< 1%).
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to John Wiley & Sons.|
|Keywords:||Positive temperature coefficient of resistivity;barium titanate;grain boundary;layers;processing.|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre|
|Date Deposited:||28 Jan 2011 05:16|
|Last Modified:||28 Jan 2011 05:16|
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