Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods

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	Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods
其他题名	Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods
	Ma Lei 1; Ma Weimin 2; Sun Xudong 1; Liu Jianan 2; Ji Lianyong 2; Song Han 2
	2015
发表期刊	JOURNAL OF RARE EARTHS
ISSN	1002-0721
卷号	33 期号:2 页码:195-201
摘要	Gadolinium zirconate (Gd2Zr2O7) 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 Gd2Zr2O7 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 Gd2Zr2O7 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 Gd2Zr2O7 nanopowders by SAC was the first choice to achieve the desired sintering densification.
其他摘要	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.
关键词	THERMOPHYSICAL PROPERTIES THERMAL-CONDUCTIVITY ZIRCONATE CERAMICS PYROCHLORE NANOCRYSTALS GD SM TRANSFORMATION EVOLUTION OXIDES Gd2Zr2O7 nanocrystals citric acid combustion (CAC) stearic acid combustion (SAC) combustion method X-ray diffraction techniques sintering densification rare earths
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5360884
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/145771
专题	中国科学院金属研究所
作者单位	1.上海市地震局 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Ma Lei,Ma Weimin,Sun Xudong,et al. Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods[J]. JOURNAL OF RARE EARTHS,2015,33(2):195-201.
APA	Ma Lei,Ma Weimin,Sun Xudong,Liu Jianan,Ji Lianyong,&Song Han.(2015).Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods.JOURNAL OF RARE EARTHS,33(2),195-201.
MLA	Ma Lei,et al."Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods".JOURNAL OF RARE EARTHS 33.2(2015):195-201.