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Title: Effect of Si<inf>3</inf>N<inf>4</inf> nanoparticulates on the mechanical and electrical properties of PZT ceramics
Authors: Orapim Namsar
Anucha Watcharapasorn
Sukanda Jiansirisomboon
Keywords: Mathematics
Physics and Astronomy
Issue Date: 23-Jul-2010
Abstract: PZT/xSi3N4 ceramics (when x=0, 0.1, 0.5 and 1 wt.%) were prepared by a solid-state mixed-oxide method and sintered at 1125 °C for 2 h. X-ray diffraction results suggested that the addition of Si 3N4 nanoparticulates did not significantly affect the unit cell and tetragonality of PZT. The addition of 0.1 wt.% Si3N 4 effectively increased the density and reduced the grain size of PZT ceramics. These changes played an important role in hardness and fracture toughness improvement. The maximum room temperature dielectric constant was achieved in a PZT/0.1 wt.% Si3N4 sample. Within the Si3N4-containing samples, the high-temperature dielectric values and ferroelectric properties seemed to increase with increasing concentrations of Si3N4. © 2010 The Royal Swedish Academy of Sciences.
ISSN: 02811847
Appears in Collections:CMUL: Journal Articles

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