Effects of substituting B2O3 for P2O 5 on the structure and properties of SnO-P2O5 glass systems

Abstract

The investigation is directed to lead free (Pb-free) frits that can be used for organic light emitting diode, plasma display screen devices and other sealing materials. P2O5-SnO system glasses have been prepared for Pb-free low temperature glass frit. Structure and properties of the glasses with the composition SnO-xB2O3-(60-x)P 2O5 (x=0, 5, 10, 15, 20, 25, 30, 35, 40 mol%) were characterized by infrared spectra (IR), X-ray diffraction(XRD), Density, Molar volume, Thermo mechanical analysis(TMA) and weight loss after immersion test. Glass transition temperature(Tg), dilatometric softening temperature(Td) and chemical durability increased, and coefficient of thermal expansion(a) decrease with the substitution of B2O3 for P2O 5 in the range of 0~25 mol%.