Structural transformations, elastic moduli and thermal expansion of permanently compacted B2O3 glasses (Articolo in rivista)

Type
Label
  • Structural transformations, elastic moduli and thermal expansion of permanently compacted B2O3 glasses (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jnoncrysol.2013.12.024 (literal)
Alternative label
  • Carini G.; Carini Jr. G.; D'Angelo G.; Tripodo G.; Salvato G.; Vasi C.; Gilioli E. (2014)
    Structural transformations, elastic moduli and thermal expansion of permanently compacted B2O3 glasses
    in Journal of non-crystalline solids; Elsevier BV, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Carini G.; Carini Jr. G.; D'Angelo G.; Tripodo G.; Salvato G.; Vasi C.; Gilioli E. (literal)
Pagina inizio
  • 40 (literal)
Pagina fine
  • 43 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84905678843&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 401 (literal)
Rivista
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IPCF Del C.N.R., Sede di Messina, Viale Ferdinando Stagno d'Alcontres 37, I-98158 Messina, Italy; Dipartimento di Fisica e Scienze della Terra, Universit√† di Messina, Viale Ferdinando Stagno d'Alcontres 31, I-98158 Messina, Italy; IMEM Del C.N.R., Area Delle Scienze, I-43010 Parma, Italy (literal)
Titolo
  • Structural transformations, elastic moduli and thermal expansion of permanently compacted B2O3 glasses (literal)
Abstract
  • Wehave measured the elastic moduli and the thermal expansion in permanently compacted B2O3 glasseswhose structural transformations have been determined by Raman spectroscopy. Growing glass densification, obtained by melt-quenching under pressures in the GPa range, is mainly associated to the decrease of the population of boroxol rings (B3O6), the glassy molecular units formed by connected BO3 planar triangles. Increasing density gives rise to a substantial hardening of the elastic continuum, while reducing the thermal expansion of these glasses. Evaluation of the average thermal Gr√ľneisen parameter ?th evidences an increase which has been explained in terms of bending vibrations gradually depressed in glassy networks having a growing packing fraction. (literal)
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