Conductive, polypyrrole coating on mulhite/alumina fibers for electrophoretic deposition of oxide matrices

被引：12

作者：

Bao, YH ^{[1
]}

Nicholson, PS ^{[1
]}

机构：

[1] McMaster Univ, Dept Mat Sci & Engn, Ceram Engn Res Grp, Hamilton, ON L8S 4L7, Canada

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2004年 / 87卷 / 09期

关键词：

D O I：

10.1111/j.1551-2916.2004.01767.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Mullite/alumina fibers (Nextel(TM) 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 similar to0.1 mum and the fiber resistance 1-2 (kOmega/cm)/fiber tow. A maximum conductivity of similar to48 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.

引用

页码：1767 / 1770

页数：4

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