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Two-Step Sintering of Pristine and Aluminum-Doped Zinc Oxide Ceramics
被引:15
|作者:
Zhang, Yulong
[1
]
Yang, Ye
[1
]
Zhang, Xianpeng
[1
]
Wang, Weiyan
[1
]
Cui, Ping
[1
]
Song, Weijie
[1
]
Tan, Ruiqin
[2
]
机构:
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
[2] Ningbo Univ, Sch Informat Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China
基金:
美国国家科学基金会;
浙江省自然科学基金;
关键词:
CONSTANT GRAIN-SIZE;
NANOCRYSTALLINE ZNO;
GROWTH;
DENSIFICATION;
TEMPERATURE;
BEHAVIOR;
DENSE;
MICROSTRUCTURE;
DIFFUSION;
VARISTOR;
D O I:
10.1111/j.1744-7402.2011.02702.x
中图分类号:
TQ174 [陶瓷工业];
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
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 mu m 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 (Tst) of 1323K and a low sintering temperature (Tnd) of 1273K. The activation energies for ZnO and AZO nanoparticle grain growth were determined to be 169 +/- 18kJ/mol and 374 +/- 36kJ/mol, respectively.
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页码:960 / 967
页数:8
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