Phosphate glasses is an important branch of functional material and have been widely used in many different fields, including biomedicine , sealing materials , optical materials , solidification of nuclear waste , solid electrolyte and electrode material , by virtue of their excellent chemical and physical properties. Most of phosphate glasses feature linear chain-like structure of covalently linked P-tetrahedra through bridging oxygens . The cross-link structure is realized by the connection of various modifier ions rather than P-O-P backbone, resulting in a weak chemical stability. This is the main reason why the phosphate glasses are easily corroded by aqueous solution . That is, they are easily eroded by the hydration process, and hence, their applications are hindered in various areas .