Crystallization of TeO2-Nb2O5 glasses and their network structural evolution

• Autorzy: Lin J. , Huang W. , Ma L. , Bian Q. , Qin S. , Wei H. , Chen J.
• Języki publikacji: EN

Abstrakty

EN

TeO2-Nb2O5 glass is a kind of heavy metal oxide glass with a chain-like network structure, in which Nb5+ ions connect the Te-O chains and adjust the types of [TeOx] (x = 3, 4) coordination polyhedra to stabilize the glass network. (100 - y)TeO2-yNb2O5 (y = 3-20 mol %) glasses were prepared, the crystallization behaviour and their network structural evolution were studied by means of differential thermal analysis (DTA), X-ray diffraction (XRD) and Fourier transform infrared spectra (FT-IR). The results show that the stabilization of the TeO2-Nb2O5 glass network is greatly influenced by the constitution of Te-O chains and their linkage. The glass structure with lower Nb5+ content is inhomogeneous, it is composed of edge sharing Te-O chains, partly edge sharing chains connected by Nb5+ ions, apical sharing chains and apical sharing chains connected by Nb5+ ions. Crystalline phases of ß-TeO2, Nb2Te4O13, .beta.-TeO2 and Te3Nb2O11 will be formed in turn when the treatment temperature of the glass is increased. When the concentration of Nb5+ ions is sufficient to well connect Te-O chains, the glass network will tend to homogenize, only one crystalline phase, Nb2Te4O13, will be formed. A suitable preheat treatment will also help to homogenize the glass structure and make the glass more stable.

Słowa kluczowe

EN

glass; tellurite; niobium; crystallization; network structure

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 1
• Strony: 329--338
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Lin J.

autor

Huang W.

autor

Ma L.

autor

Bian Q.

autor

Qin S.

autor

Wei H.

autor

Chen J.

• College of Materials Science and Engineering, Tongji University, Shanghai 200092, China

Bibliografia

• [1] KIM S., YOKO T., SAKKA S., J. Am. Ceram. Soc., 76 (1993), 2486.
• [2] EL-MALLAWANY R., Mat. Chem. Phys., 60 (1999), 103.
• [3] WANG J., PATTNAIK R.K., TOULOUSE J., JAIN H., PRASAD S., SPIE, 5597 (2004), 136.
• [4] WANG J.S., VOGEL E.M., SNITZER E., Opt. Mat., 3 (1994), 187.
• [5] OVECOGLU M.L., OZALP M.R., OZEN G., ALTIN F., KALEM V., Key Eng. Mat., 264-268 (2004), 1891.
• [6] SLIVA M.A.P., MESSADDEQ Y., RIBEIRO S.J.L., POULAIN M., VILAIN F., BRIOIS V., J. Phys. Chem.Solids, 62 (2001), 1055.
• [7] LIN J., HUANG W., SUN Z., RAY C.S., DAY D.E., J. Non-Cryst. Solids, 336 (2004), 189.
• [8] LIN J., HUANG W.H., WANG H.B., JIN C., LUO L.Q., Chin. J. Mat. Sci. Eng., 22 (2004), 827.
• [9] CANIONI L., MARTIN M.O., BOUSQUET B., SARGER L., Opt. Commun., 151 (1998), 241.
• [10] AHMAD M.M., YOUSEF E.S., MOUSTAFA E.S., Physica B, 371 (2006), 74.
• [11] CAPOBIANCO J.A., VETRONE F., BOYER J.C., SPEGHINI A., BETTINELLI M., SPIE, 4829 (2003), 81.
• [12] ZHAO C., ZHANG Q.Y., PAN Y.X., JIANG Z.H., Chin. Phys., 15 (2006), 2158.
• [13] CHEN D.D., LIU Y.H., ZHANG Q.Y., DENG Z.D., JIANG Z.H., Mater. Chem. Phys., 90 (2005), 78.
• [14] EL-MALLAWANY R., Mat. Chem. Phys., 63 (2000), 109.
• [15] YAMAMOTO H., NASU H., MATSUOKA J., KAMIYA K., J. Non-Cryst. Solids, 170 (1994), 87.
• [16] VILLEGAS M.A., FERN’ANDEZ NAVARRO J.M., J. Eur. Ceram. Soc., 27 (2007), 2715.
• [17] GALY J., LINDQVIST O., J. Solids State Chem., 27 (1979), 279.
• [18] BLANCHANDIN S., CHAMPARNAUD-MESJARD J.C., THOMAS P., J. Alloys Compds., 306 (2000), 175.