ROAl_2O_3P_2O_5玻璃在模拟生理液中的侵蚀规律

Corrosion Mechanism of RO Al 2O 3 P 2O 5 Glass in Simulated Physiologic Solution

对ＲＯＡｌ２Ｏ３Ｐ２Ｏ５ 系统玻璃中某些组分进行了去离子水及模拟生理液的耐蚀性测定．实验表明，ＲＯＡｌ２Ｏ３Ｐ２Ｏ５ 在模拟生理液中的侵蚀规律异于通常的Ｎａ２ＯＣａＯＳｉＯ２Ｐ２Ｏ５ 生物玻璃．试样的红外光谱验证了在该玻璃中兼有ＰＯ３ 和Ｐ２Ｏ７ 基团，具有稳定的Ａｌ（ＰＯ３）结构单元．

Chemical durability of selected compositions in RO Al 2O 3 P 2O 5(RAP) glass system(R=Zn,Mg) in deionic water and simulated physiologic solution were measured respectively. The measurements showed that the corrosion mechanism of RAP glass is quite different from that of Na 2O CaO SiO 2 P 2O 5 bioglass.The results from infrared spectrum experiments have confirmed the existence of PO 3 and P 2O 7 groups,as well as the stable Al(PO 3) group in the structure of RAP glass.