Characterization of thermally induced of crystalline phases in CuO-containing silicate–phosphate glasses

The DSC, XRD, FTIR, and 31 P MAS-NMR methods were applied to study complex crystallization processes occurring during the thermal treatment of multicomponent SiO 2 –P 2 O 5 –K 2 O–CaO–MgO glasses modified by the addition of variable amount of copper. The crystallization temperatures were found to de...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2012-05, Vol.108 (2), p.657-663
Main Authors: Sułowska, Justyna, Wacławska, Irena, Szumera, Magdalena, Olejniczak, Zbigniew
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Chemical properties
Chemistry
Chemistry and Materials Science
Copper oxide
Cuprite
Exact sciences and technology
Fertilisers
Fertilizers
Glasses
Industrial chemicals
Inorganic Chemistry
Measurement Science and Instrumentation
Phosphates
Physical Chemistry
Polymer Sciences
Silicates
Structure, analysis, properties
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Summary:The DSC, XRD, FTIR, and 31 P MAS-NMR methods were applied to study complex crystallization processes occurring during the thermal treatment of multicomponent SiO 2 –P 2 O 5 –K 2 O–CaO–MgO glasses modified by the addition of variable amount of copper. The crystallization temperatures were found to decrease with the increasing copper content. The products of multistage crystallization identified by XRD and characterized by FTIR and NMR are the Ca 9 KMg(PO 4 ) 7 and Ca 19 Cu 2 (PO 4 ) 14 phosphates of whitlockite-type, and the CaMgSi 2 O 6 and Cu 0.69 Mg 1.31 Si 2 O 6 silicates of diopside type.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-011-1988-5