Structure and Crystallization of ZnOB₂O₃P₂O₅ Glasses¹

Pei Chen*, Shengchun Li, Wenjie Qiao**, and Yaogang Li

College of materials science and engineering, Donghua University,
North Renmin Road, 2999#, Songjiang, District, Shanghai, 201620 China

*e-mail: chenpei@dhu.edu.cn
**e-mail: qiao_0518@163.com

Received November 25, 2009

Abstract—Structure and crystalline behavior of the ternary system ZnO–B₂O₃–P₂O₅ glasses were investigated
by means of X-ray diffraction (XRD) and infrared Raman spectra. The research showed that number of the planar
[BO₃] units increases with the increase of B₂O₃ content. When the B₂O₃ content is above 10 mol %, the relative
content of planar [BO₃] units increases rapidly and causes weakening of the glass structure and decrease in the
chemical stability. In the crystallized glasses the predominant crystal phase Zn₂P₂O₇ decreases with the increase
of B₂O₃ content, while the crystal phase BPO₄ increases with it, which cause the declining of chemical stability
and the decrease of thermal coefficients of expansion.

Keywords: phosphate glass, ZnO–B₂O₃–P₂O₅ system, lead-free, low-melting glass, sealing glass

DOI: 10.1134/S1087659611010044

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.