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Preparation of PZT Microtubes by Slip Casting on Vermicelli, Followed by In Situ Polymerization
Author(s) -
Prabhakaran Kuttan,
Raghunath Sooraj,
Melkeri Anand,
Jayasingh Moses Ebenezer,
Durgaprasad Chadalapaka,
Gokhale Nitin Madusudhan
Publication year - 2010
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02361.x
Subject(s) - materials science , slurry , composite material , ceramic , slip (aerodynamics) , lead zirconate titanate , casting , polymerization , piezoelectricity , dielectric , polymer , physics , optoelectronics , ferroelectricity , thermodynamics
Slip casting of lead zirconate titanate (PZT) slurries of higher solids loading (48.8–51.6 vol%) prepared in a urea–formaldehyde (UF) monomer solution on vermicelli of ∼1000 μm diameter has been studied to prepare PZT microtubes with a higher wall thickness (200–960 μm) in a lower dipping time (0.5–4.0 min) to facilitate faster production and lower failure during drying and vermicelli burnout. Polymerization of the UF monomer by exposing the PZT slurry‐coated vermicelli to HCl gas provides good strength and stability to the coating. The dielectric and piezoelectric properties of the microtubes compare well with the properties of PZT‐5H ceramic compositions.