Conductive, Polypyrrole Coating on Mullite/Alumina Fibers for Electrophoretic Deposition of Oxide Matrices

Mullite/alumina fibers (Nextel™ 720) have been rendered conductive for electrophoretic deposition (EPD) by coating with polypyrrole (Ppy) from an aqueous solution of pyrrole (Py). The polymer coating was characterized by thermogravimetric (TG) analysis, scanning electron microscopy (SEM), and conduc...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2004-09, Vol.87 (9), p.1767-1770
Main Authors: Bao, Yahua, Nicholson, Patrick S.
Format: Article
Language:English
Subjects:
Alumina
Applied sciences
Aqueous solutions
Building materials. Ceramics. Glasses
Ceramic and carbon fibers
Ceramic industries
Chemical industry and chemicals
coatings
Conductivity
deposition
Exact sciences and technology
Fibers
Matrix
Technical ceramics
Thin film coatings
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mullite/alumina fibers (Nextel™ 720) have been rendered conductive for electrophoretic deposition (EPD) by coating with polypyrrole (Ppy) from an aqueous solution of pyrrole (Py). The polymer coating was characterized by thermogravimetric (TG) analysis, scanning electron microscopy (SEM), and conductivity measurements. The Ppy coating thickness is ∼0.1 μm and the fiber resistance 1–2 (kΩ/cm)/fiber tow. A maximum conductivity of ∼48 S/cm was achieved from a 0.005M pyrrole solution. A Nextel 720/Al2O3 composite was synthesized using Ppy‐coated fibers as the cathode in an EPD cell. The green and sintered microstructures of the resultant composites are reported.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2004.01767.x