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Two‐Step Sintering of Pristine and Aluminum‐Doped Zinc Oxide Ceramics
Author(s) -
Zhang Yulong,
Tan Ruiqin,
Yang Ye,
Zhang Xianpeng,
Wang Weiyan,
Cui Ping,
Song Weijie
Publication year - 2012
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/j.1744-7402.2011.02702.x
Subject(s) - materials science , sintering , ceramic , doping , grain size , grain growth , nanoparticle , zinc , two step , chemical engineering , aluminium , metallurgy , nanotechnology , optoelectronics , chemistry , engineering , combinatorial chemistry
ZnO and Al ‐doped ZnO ceramics with high density and fine grain size were prepared using a two‐step sintering method. ZnO ceramics with a grain size of 1.2 μm and a density greater than 99% were obtained. The kinetic window for a ZnO nanoparticle TSS process was determined in this study. Dense AZO ceramics with homogeneous Al distribution were obtained using a high sintering temperature ( T st ) of 1323 K and a low sintering temperature ( T nd ) of 1273 K. The activation energies for ZnO and AZO nanoparticle grain growth were determined to be 169 ± 18 kJ/mol and 374 ± 36 kJ/mol, respectively.