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Densification of 8Y‐Tetragonal‐Stabilized Zirconia Optoceramics with Improved Optical Properties by Y Segregation
Author(s) -
Prakasam Mythili,
Weill François,
Lebraud Eric,
Viraphong Oudomsack,
Buffiére Sonia,
Largeteau Alain
Publication year - 2016
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12568
Subject(s) - materials science , tetragonal crystal system , yttria stabilized zirconia , transparent ceramics , grain growth , ceramic , sintering , cubic zirconia , high resolution transmission electron microscopy , phase (matter) , dopant , grain size , mineralogy , composite material , nanotechnology , doping , optoelectronics , transmission electron microscopy , chemistry , organic chemistry
8% Yttria‐stabilized zironcia (8 YSZ ) transparent ceramics have a wide technological applications. Segregation of the Y around the grain boundaries is favored by slow heating rate. The optimized sintering parameters helped in obtaining transparent ceramics of 8 YSZ with a high percentage of cubic phase in addition to the presence of tetragonal phase. HRTEM was used to verify the grain growth suppression and to observe the presence of the cubic phase. The presence of cubic phase has suppressed the grain growth, which increased the transparency in the visible and infrared region without the addition of dopants or by utilizing high pressure.