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Low‐Temperature Sintering and High‐Strength Pb(Zr,Ti)O 3 ‐Matrix Composites Incorporating Silver Particles
Author(s) -
Hwang Hae Jin,
Watari Koji,
Sando Mutsuo,
Toriyama Motohiro,
Niihara Koichi
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb02901.x
Subject(s) - materials science , composite material , dielectric , sintering , volume fraction , lead zirconate titanate , fracture toughness , flexural strength , matrix (chemical analysis) , ferroelectricity , optoelectronics
Lead zirconate titanate based composites containing silver particles were fabricated from commercially available PZT and Ag 2 O powder mixtures. Densification behavior and mechanical and dielectric properties were evaluated as a function of the volume fraction of silver. No unwanted reaction phases between the PZT matrix and silver could be detected in the X‐ray diffraction analysis. The added silver particles were homogeneously dispersed in the matrix. The densification of PZT was substantially accelerated by the addition of silver particles. Mechanical properties, e.g., fracture toughness and fracture strength, were improved by the addition of silver particles. The relative dielectric constant also increased when the volume fraction of silver was increased. This observed enhancement in dielectric constant may be associated with the effective dielectric field developed by the existence of conducting silver particles.