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An oscillatory pressure sintering of zirconia powder: Rapid densification with limited grain growth
Author(s) -
Han Yao,
Li Shuang,
Zhu Tianbin,
Xie Zhipeng
Publication year - 2017
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/jace.14953
Subject(s) - sintering , materials science , cubic zirconia , microstructure , ceramic , grain growth , grain size , homogeneous , pressing , metallurgy , composite material , hot pressing , physics , thermodynamics
A novel oscillatory pressure sintering ( OPS ) process is reported to prepare high‐quality ceramics. The oscillatory pressure was applied at three stages (initial, intermediate, and final) during sintering process of zirconia ceramics for the first time. The microstructure of the samples prepared by OPS develops in a more homogeneous manner, leading to a higher final density, a smaller average grain size, and a narrower distribution of grain sizes compared with the samples prepared by conventional pressureless sintering ( PS ) and hot‐pressing ( HP ) processes. Remarkably, the OPS samples was obtained at relatively lower heating temperature and less soaking time for 1300°C and 0.5 hours than the samples prepared by other two techniques at 1450°C and 1 hour. The current results suggest that OPS is an effective technique for preparing high‐quality zirconia ceramics with low heating temperature and short sintering time, thus, it obviously reduces cost.