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Issue 28, 2011
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Densified low-hygroscopic form of P2O5 glass

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P2O5 compound is an archetypical glass-forming oxide with a record-high hygroscopicity, which makes both the study and potential industrial uses of the glass extremely difficult. We found that the quenching from the P2O5 melt under ultrahigh pressures enables obtaining densified P2O5 glasses with a residual densification up to 12% at normal conditions. These glasses have a low hygroscopicity and can exist under air conditions for several weeks. An examination of the structure of the new form of P2O5 glass reveals a significant increase in neighbors of terminal oxygen atoms in the second coordination sphere and a cardinal decrease of the volume of nanovoids in the glassy matrix. The research on the physical properties of a non-hygroscopic form of P2O5 glass will possibly allow it to be used for the synthesis of new phosphate glasses and their applications.

Graphical abstract: Densified low-hygroscopic form of P2O5 glass

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The article was received on 01 Mar 2011, accepted on 27 Apr 2011 and first published on 15 Jun 2011

Article type: Paper
DOI: 10.1039/C1JM10889A
Citation: J. Mater. Chem., 2011,21, 10442-10447
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    Densified low-hygroscopic form of P2O5 glass

    V. V. Brazhkin, J. Akola, Y. Katayama, S. Kohara, M. V. Kondrin, A. G. Lyapin, S. G. Lyapin, G. Tricot and O. F. Yagafarov, J. Mater. Chem., 2011, 21, 10442
    DOI: 10.1039/C1JM10889A

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