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Sintering of Transparent Yttria Ceramics in Oxygen Atmosphere
Author(s) -
Huang Yihua,
Jiang Dongliang,
Zhang Jingxian,
Lin Qingling,
Huang Zhengren
Publication year - 2010
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.1551-2916.2010.03940.x
Subject(s) - sintering , materials science , yttria stabilized zirconia , grain size , grain growth , cubic zirconia , crystallite , atmosphere (unit) , ceramic , oxygen , reducing atmosphere , metallurgy , chemical engineering , hydrogen , mineralogy , chemistry , physics , organic chemistry , thermodynamics , engineering
A novel method is reported for the preparation of transparent polycrystalline yttria ceramics in oxygen atmosphere. Zirconia and other additives were added to control the grain growth. Pores can be eliminated clearly at a temperature <1650°C with the grain size around 1 μm. The grain growth kinetics and the mechanisms controlling grain growth were studied. Sintering in oxygen atmosphere is beneficial for making samples with a big size at low cost and avoiding the posttreatment of samples sintered in vacuum or hydrogen atmosphere.