本文利用喇曼光谱研究了作为组成函数的Na2O-Al2O3-P2O5系统玻璃的结构.发现在含直到10mol%Al2O3的酸性玻璃中,几乎所有的铝都处六配位,玻璃的网络主要由(PO3)n~(n-)链及环构成;当玻璃组成处Na2O/P2O5≥1和5≤Al2O3≤20mol%时,形成AlO4四面体和各种磷酸盐基因;然而,当Al2O3含量超过25mol%及Al2O3/P2O5≥0.63时,玻璃网络主要由AlPO4基因构成,与Na2O/P2O5比无关.

The structure of sodium aluminophosphate glasses has been studied as a function of composition by Raman speetroscopy. It is found that in glasses with Na2O/P2O5<1 and content up to 10 mol % A13O3, nearly all the alumina is six coordinated, the glass network is mainly built up of (PO3)nn- chains and rings; while in glasses with Na2O/ P2O5≥1 and 5≤A12O3≤20 mol%, A1o4 tetrahedra and different kinds of phosphate groups are formed; but when the Al2O3 conten exceeds 25 mol % and the ratio of Al2O3/P2o5≥0.63, the glass network is mainly built up of AlPO4 groups.