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Effects of Preparation Conditions on the Structural and Optical Properties of Spark Plasma‐Sintered PLZT (8/65/35) Ceramics
Author(s) -
Wu Yong Jun,
Li Juan,
Kimura Ryo,
Uekawa Naofumi,
Kakegawa Kazuyuki
Publication year - 2005
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.1551-2916.2005.00601.x
Subject(s) - materials science , spark plasma sintering , transmittance , ceramic , calcination , sintering , microstructure , transparent ceramics , grain size , composite material , titanate , mineralogy , optoelectronics , biochemistry , chemistry , catalysis
Transparent lanthanum‐doped lead zirconate titanate (PLZT) ceramics with high density were fabricated using spark plasma sintering (SPS), a recently developed hot‐pressing method. A wet–dry combination method was used to prepare the fine PLZT powders. The average grain size of the PLZT ceramics was less than 1 μm, because of a relatively low sintering temperature and a very short sintering time. The transmittance of PLZT ceramics increased with an increase of calcination temperature up to 700°C and then it slightly decreased with further increase of calcination temperature. The transmittance strongly depended on the SPS temperature and heat‐treatment temperature. The pellet sintered at 900°C for 10 min and heat treated at 800°C for 1 h with a thickness of 0.5 mm showed a transmittance of 31% at a wavelength of 700 nm. The relationships between the transmittance and the microstructure were investigated.