Abstract
Borophosphate glasses of the BaO–B2O3–P2O5 ternary system were prepared and studied within the large glass-forming region of the system. Fourteen investigated glass samples of barium borophosphate glasses were discussed for a comparison of the compositional trends in their properties in four compositional series such as A: (100 − x)Ba(PO3)2–xB2O3, B: 40BaO–yB2O3–(60 − y)P2O5, C: (50 − z)BaO–zB2O3–50P2O5, and D: (60 − w)BaO–wB2O3–40P2O5. Changes in glass density and molar volume primarily depend on the BaO content in the glasses. The thermal properties were studied with a differential thermal analysis, hot-stage microscopy, and dilatometry. Glass transition temperature increases with a rising B2O3 content most rapidly in the glass series A and B. It reaches its maximum in these series for the glasses containing 20–30 mol%, where the glass network represents a 3D structure interlinked with P–O–B, P–O–P, and B–O–B bridges. The thermal expansion coefficient decreases, in contrast, with the increasing B2O3 content in these ternary glasses as well as their chemical durability. The crystallization of these glasses, in the samples with a low B2O3 content, results in the formation of barium metaphosphate BaP2O6. Certain crystallized samples also contain a small amount of BPO4, and diffraction lines of ternary compounds BaBPO5 and Ba3B(PO4)3 were revealed in a number of samples. A new compound of the composition Ba5B2P8O28 was identified in the crystallized glass 50BaO–10B2O3–40P2O5.
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References
Ebendorff-Heidepriem H. Fluoride phosphate and phosphate glasses for photonics. Phosphorus Res Bull. 2002;13:11–20.
Singh NB, Choudhary BP. Synthesis, characterization and properties of SrO-doped silver phosphate glass. J Therm Anal Calorim. 2015;120:1217–26.
Morena R. Phosphate glasses as alternatives to Pb-based sealing frits. J Non-Cryst Solids. 2000;263–264:382–7.
Marasinghe GK, Karabulut M, Ray CS, Day DE, Shuh DK, Allen PG, Saboungi ML, Grimsditch M, Haeffner D. Properties and structure of vitrified iron phosphate nuclear wasteforms. J Non-Cryst Solids. 2000;263–264:146–54.
Brow RK, Tallant DR. Structural design of sealing glasses. J Non-Cryst Solids. 1997;222:396–406.
Ciecińska M, Stoch P, Stoch A, Nocuń M. Thermal properties of 60P2O5–20Fe2O3–Al2O3 glass for salt waste immobilization. J Therm Anal Calorim. 2015;121:1225–32.
Koudelka L, Mošner P. Borophosphate glasses of the ZnO–B2O3–P2O5 system. Mater Lett. 2000;42:194–9.
Koudelka L, Mošner P, Zeyer M, Jäger C. Structural study of PbO–B2O3–P2O5 glasses by NMR, Raman and infrared spectroscopy. Phys Chem Glasses. 2002;43C:102–7.
Sedmale G, Vaivads J, Sedmalis U, Kabanov VO, Yanush OV. Formation of borophosphate glass structure within the system BaO–B2O3–P2O5. J Non-Cryst Solids. 1991;129:284–91.
Walter G, Hoppe U, Baade T, Kranold R, Stachel D. Intermediate range order in MeO–P2O5 glasses. J Non-Cryst Solids. 1997;217:299–307.
Harada T, Takebe H, Kuwabara M. Effect of B2O3 addition on the thermal properties and structure of bulk and powdered barium phosphate glasses. J Am Ceram Soc. 2006;89:247–50.
Joint Committee on powder diffraction standards. Swarthmore PA USA. International Centre of Diffraction Data.
Koudelka L, Kalenda P, Mošner P, Černošek Z, Montagne L, Revel B. Structural investigation of BaO–B2O3–P2O5 glasses by NMR and Raman spectroscopy. J Mol Struct. (submitted).
de Wolff PM. A simplified criterion for the reliability of a powder pattern indexing. J Appl Crystallogr. 1968;1:108–13.
Smith GS, Snyder RL. FN—criterion for rating powder diffraction patterns and evaluating the reliability of powder-pattern indexing. J Appl Crystallogr. 1979;12:60–5.
Laugier J, Bochu B. LMGP-Suite, ENSP/Laboratoire des Materiaux et du Genie Physique, Saint Martin d’Heres, France. http://www.inpg.fr/LMGP and http://www.ccp14.ac.uk/tutorial/lmgp/. Accessed Dec 2007.
Kniep R, Gözel G, Eisenmann B, Röhr C, Asbrand M, Kizilialli M. Borophosphates—a new neglected class of compounds: crystal structures of MII[BPO5] (MII = Ca, Sr) and Ba3[BP3O12]. Angew Chem Int Ed Engl. 1994;33:749–51.
Pushcharovsky DY, Gobetchia ER, Pasero M, Merlino S, Dimitrova OV. Hydrothermal synthesis and crystal structures of Li, Ba-nanoborate, LiBaB9O15, and Ba-borophosphate, BaBPO5. J Alloys Compd. 2002;339:70–5.
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The authors are grateful for the financial support from the project No. 13-00355S of the Grant Agency of the Czech Republic.
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Kalenda, P., Koudelka, L., Mošner, P. et al. Thermal behavior and the properties of BaO–B2O3–P2O5 glasses. J Therm Anal Calorim 124, 1161–1168 (2016). https://doi.org/10.1007/s10973-016-5317-x
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DOI: https://doi.org/10.1007/s10973-016-5317-x