DEMYANOVA, Larisa P.; TRESSAUD, Alain

doi:10.1016/j.jfluchem.2009.06.009

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DEMYANOVA, Larisa P.
Institute of Geology and Nature Management

TRESSAUD, Alain
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Fluorine Chemistry. 2009, vol. 130, n° 9, p. 799-805

Elsevier

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The effect of fluorination on silicate and alumino-silicate minerals has been investigated, in particular on the lepidolite [K(Li,Al)3 [Si3AlO10] (F,OH)2] of the mica-type. The fluorination techniques included direct F2-gas and cold radio-frequency-plasma involving c-C4F8 or O2/CF4 mixtures. The modifications of the surface properties have been followed mostly by XPS. Depending of the fluorination route used, either a reactive etching process involving M–F bonding occurs (direct F2-gas; O2–CF4 rf-plasma), or a carbon fluoride deposition takes place (c-C4F8 rf-plasma).< Leer menos

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Silicate

Mica

XPS

Surface modifications

Fluorine

Rf-plasma

Fluorinated gases

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Fluorination of alumino-silicate minerals: The example of lepidolite

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