Thermal properties of Bi2O3-SiO2-B2O3-ZnO-Al2O3 glass powders prepared by sol-gel method
LE Yingfeng
YUAN Gecheng
LI Qian
QIU Shengfu
HU Yongjun
Abstract：To obtain lead-free glass frits with excellent thermal properties,Bi2O3-SiO2-B2O3-ZnO-A12O3 glass powders were prepared by sol-gel method.Morphologies,characteristic temperature,crystallization characteristics,thermal expansion and flexibility of glass were investigated by scanning electron microscopy (SEM),differential scanning calorimetry (DSC),X-ray diffraction test analysis (XRD),thermal expansion instrument and "button" experiments.The connection between these properties was analyzed.The results show that sol-gel glass powders are porous.The ball milled particle size is mainly in 0.1～1 μm and glass transition temperature is 485 ℃,the softening temperature is 541 ℃.The glass powder is amorphous in the range of 25～1 000 ℃.The thermal expansion coefficient is 6.57×10-6 ℃-1 ranging from 25 to 300 ℃,it presents a good flexibility when firing at 700～725 ℃.
Keywords：sol-gel methodBi2O3-SiO2-B2O3-ZnO-Al2O3 glass powdersthermal properties
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 84-87 )