TITLE:
Nanoparticles Transport in Ceramic Matriсes: A Novel Approach for Ceramic Matrix Composites Fabrication
AUTHORS:
Andrey N. Rybyanets, Anastasia A. Naumenko
KEYWORDS:
Nanoparticles; Polymer Nanogranules; Porous Ceramics; Ceramic Matrix Composites
JOURNAL NAME:
Journal of Modern Physics,
Vol.4 No.8,
August
13,
2013
ABSTRACT: The results of practical implementation of a new method for porous
piezoceramics, and ceramic matrix
piezocomposites fabrication were presented. The method was based on
nanoparticles transport in ceramic matrices using a polymer nanogranules coated
or filled with a various chemicals, with successive porous ceramics fabrication
processes. Different types of polymer microgranules filled and coated by
metal-containing nanoparticles were used for a pilot samples fabrication.
Polymer microgranules were examined using transmission and scanning electron
microscopy as well as by EXAFS and X-ray emission spectroscopy. Pilot samples
of nano- and microporous ceramics and composites were fabricated using
different piezoceramics compositions (PZT, lead potassium niobate
and lead titanate) as a ceramic matrix bases. Resulting ceramic matrix piezocomposites were
composed by super lattices of closed or open pores filled or coated by
nanoparticles of metals, oxides, ferromagnetics etc. embedded in piezoceramic
matrix. Dielectric and piezoelectric parameters of pilot samples were measured
using piezoelectric resonance analysis method. New family of nano- and
microporous piezoceramics and ceramic
matrix piezocomposites are characterized by a unique spectrum of the
electrophysical properties unachievable for standard PZT ceramic compositions
and fabrication methods.