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Synthesis of Zirconium Tungstate by Hydrothermal Method

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Abstract:

Negative thermal expansion material ZrW2O8 was synthesized by hydrothermal method. The prepared ZrW2O8 and the precursor were characterized by x-ray diffractometer, thermo-gravimetric/differential thermal analyzer, FT-IR spectrometer and scanning electron microscope. The results show that a single-phase ZrW2O8 can be synthesized when HCl concentration is as low as 4mol/L. ZrW2O8 was obtained through the precursor dehydration and debonding O-H bond. The dehydration reaction includes two stages. There is a sharp endothermic peak in the first stage of the dehydration reaction and the second stage is a slow endothermic process. A new phase appeared when the sintering temperature is above 600 °C. ZrW2O8 and the precursor have the same rod-like shape and grow up along a specific direction. The synthesized ZrW2O8 particles obtained from 4mol/L HCl appeared large size. It became much finer and the rod with multiple crystal face was easy to form when the concentration of HCl increased to 6~8 mol/L.

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Periodical:

Advanced Materials Research (Volume 322)

Pages:

201-204

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.322.201

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Online since:

August 2011

Authors:

Li Yun Zheng, Zhi Wei Yang

Keywords:

Hydrothermal Method, Negative Thermal Expansion, Zirconium Tungstate

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Graham J, Wadsley AD, Weymouth JH, Williams LS, J Am Ceram Soc Vol. 42 (1959), p.570.

Google Scholar

[2] Ernst G, Broholm C, Kowach GR, Ramirez AP. Nature Vol. 396 (1998), p.147.

Google Scholar

[3] Perottoni CA, Da Jornada JAH. Science Vol. 280 (1998), p.886.

Google Scholar

[4] Evans JSO, Hu Z, Jorgensen JD, Argyriou DN, Short S, Sleight AW, Science Vol. 275 (1997), p.61.

Google Scholar

[5] Evans JSO, Mary TA, Vogt T, Subramanian MA, Sleight AW, Chem Mater Vol. 8 (1996), p.2809.

Google Scholar

[6] Mary TA, Evans JSO, Vogt T, Sleight AW, Science Vol. 272 (1996), p.90.

Google Scholar

[7] Korthuis V，Khosrovani N，Sleight AW, Roberts N, Dupree R, Warren WW, Chem Mater Vol. 7 (1995), p.412.

DOI: 10.1021/cm00050a028

Google Scholar

[8] Kofteros M, Rodriguez S, Tandon V, Murr LE, Scr Mater Vol. 45 (2001), p.369.

Google Scholar

[9] Huang L-P, Chen K-H, Heat Treatment of Metals Vol. 31 (2006), p.20.

Google Scholar

[10] Lommens P, De Meyer C, Bruneel E, De Buysser K, Van Driessche I, Hoste S, J Eur Ceram Soc Vol. 25 (2005), p.3605.

DOI: 10.1016/j.jeurceramsoc.2004.09.015

Google Scholar

[11] Tani J, Kimura H, Hirota K, Kido H. J Appl Poly Sci Vol. 106 (2007), p.3343.

Google Scholar

[12] Chang LLY, Scroger MG, Phillips B, J Am Ceram Soc Vol. 50 (1967), p.211.

Google Scholar