Structure and Thermal Transformations of Hydrated Magnesium Silicates

Abstract:

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The article is devoted to an estimation of phase transformations of silicates magnesium at heating in the temperatures range from 0°C to 1100°С. The object of study is a silicates of magnesium containing oxide nickel ore. Differentially-thermal (NETZSCH 449 C - Jupiter), weights – spectrometer (QMS 403 C Aёolos), high-temperature X-ray diffraction, electron-probe microanalysis (JSM - 5900 LV) and chemical analysis methods have been used in the study. The temperature ranges of existence Mg6[(OH)8Si4O10] and Mg2Si2O6 are obtained. Parameters of an elementary cell of the above minerals and their changes with temperature and features of nickel distribution in magnesium silicates with various ration MgO/SiO2 are defined in this work.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 312-315)

Edited by:

Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado

Pages:

708-712

DOI:

10.4028/www.scientific.net/DDF.312-315.708

Citation:

E. N. Selivanov et al., "Structure and Thermal Transformations of Hydrated Magnesium Silicates", Defect and Diffusion Forum, Vols. 312-315, pp. 708-712, 2011

Online since:

April 2011

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Price:

$35.00

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