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Optical Properties and Microstructure of Nanocrystalline Cubic Zirconia Prepared by High‐Pressure Spark Plasma Sintering
Author(s) -
Zhang Haibin,
Kim ByungNam,
Morita Koji,
Yoshida Hidehiro,
Lim JaeHyuk,
Hiraga Keijiro
Publication year - 2011
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.1551-2916.2011.04477.x
Subject(s) - cubic zirconia , materials science , yttria stabilized zirconia , microstructure , nanocrystalline material , spark plasma sintering , oxidizing agent , annealing (glass) , sintering , transparent ceramics , oxygen , composite material , chemical engineering , metallurgy , nanotechnology , ceramic , chemistry , organic chemistry , engineering
The optical properties and microstructure are evaluated for a transparent cubic (8 mol% yttria‐stabilized) zirconia ( c ‐YSZ) prepared by high‐pressure spark plasma sintering. Oxygen vacancies and residual pores are primary defects in the present transparent c ‐YSZ, and the combination influence of these two defects determines the optical properties. The as‐sintered transparent zirconia strongly absorbs the incident light due to the formation of high concentration of oxygen vacancies. Annealing treatment in oxidizing atmosphere can improve the transparency by reducing oxygen defects. The existence of fine pores in the present zirconia causes scattering of the incident light.