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Structure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods
Alternative TitleStructure properties and sintering densification of Gd2Zr2O7 nanoparticles prepared via different acid combustion methods
Ma Lei1; Ma Weimin2; Sun Xudong1; Liu Jianan2; Ji Lianyong2; Song Han2
2015
Source PublicationJOURNAL OF RARE EARTHS
ISSN1002-0721
Volume33Issue:2Pages:195-201
AbstractGadolinium 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.
Other AbstractGadolinium 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.
KeywordTHERMOPHYSICAL 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
Indexed ByCSCD
Language英语
CSCD IDCSCD:5360884
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/145771
Collection中国科学院金属研究所
Affiliation1.上海市地震局
2.中国科学院金属研究所
Recommended Citation
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.
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