Effects of Substituting B 2 O 3 for P 2 O 5 on the Structure and Properties of P 2 O 5 -SnO 2 Glass Systems

P2O5-SnO2 system 0.5SnO(2)-xP(2)O(5)-(0.5-x)B2O3(x= 0.1, 0.2, 0.3, 0.4, 0.5) glasses have been prepared for Pb-free low temperature glass frit. A investigation about the effect of B2O3 substitution on properties of P2O5 glasses, including glass structure properties, thermal properties, and mechanical properties was presented. Substance that is responsible for in moisture absorption existing circumstances supposes by phosphate, and excess moisture tolerance that state funeral's structure is improved breaking does not affect in state funeral bond that only most single bond remains, and can know that does not suffer big impact in boric oxide anomaly present state. This phenomenon estimates that connect with structure change. It is thought according to link this result the phosphoric acid happened structural change. B2O3 displacement quantity 0.3 mole put out BO4 structures, but above 0.3 mole it changed with the case BO3 structure which it displaces.