Structure properties and sintering densification of Gd_2Zr_2O_7 nanoparticles prepared via different acid combustion methods
查看参考文献29篇
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文摘
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Gadolinium zirconate (Gd_2Zr_2O_7) nanocrystals were prepared via two different combustion methods: citric acid combustion (CAC) and stearic acid combustion (SAC). The effects of the different preparation methods on the phase composition, microtopography, and sintering densification of the resulting Gd_2Zr_2O_7 nanopowders were investigated by thermal-gravimetric and differential thermal analysis (TG-DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and transmission electron microscopy (TEM) techniques. The results indicated that both methods could produce Gd_2Zr_2O_7 nanopowders with an excellent defective fluorite structure. The reaction time was reduced by the SAC method, compared with the CAC method. The nanopowders synthesized by the two methods were different in grain size distribution. The resulting nanoparticle diameter was about 50 nm for CAC and 10 nm for SAC. After vacuum sintering, the sintered bodies also had a different relative density of about 93% and 98%, respectively. Thus the preparation of Gd_2Zr_2O_7 nanopowders by SAC was the first choice to achieve the desired sintering densification. |
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来源
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Journal of Rare Earths
,2015,33(2):195-201 【核心库】
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DOI
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10.1016/s1002-0721(14)60402-6
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关键词
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Gd_2Zr_2O_7 nanocrystals
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citric acid combustion (CAC)
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stearic acid combustion (SAC)
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combustion method
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X-ray diffraction techniques
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sintering densification
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rare earths
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地址
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1.
Northeastern University, Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education);;Key Laboratory for Advanced Ceramics and Application of Shenyang, Shenyang, 110819
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School of Material Science and Engineering, Shenyang University of Chemical Technology, Key Laboratory for Advanced Ceramics and Application of Shenyang, Shenyang, 110142
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Northeastern University, Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Shenyang, 110819
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1002-0721 |
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学科
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冶金工业 |
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文献收藏号
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CSCD:5360884
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