Structure and Thermal Transformations of Hydrated Magnesium Silicates

Evgeny N. Selivanov; S.V. Lazareva; L.U. Udoeva; R.I. Gulyaeva

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

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 312-315Structure and Thermal Transformations of Hydrated...

Structure and Thermal Transformations of Hydrated Magnesium Silicates

Abstract:

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.

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Periodical:

Defect and Diffusion Forum (Volumes 312-315)

Pages:

708-712

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.312-315.708

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Online since:

April 2011

Authors:

Evgeny N. Selivanov, S.V. Lazareva, L.U. Udoeva, R.I. Gulyaeva

Keywords:

Basic Cell, Magnesium Silicates, Oxide Nickel Ore, Serpentine, Structure, Thermal Effect, Thermal Transformation

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