Nitridation of bioresorbable phosphate glass

摘要

The bioresorbable 10CaO 35Na_2O55P_2O_5 glass was nitrided by melting the glass under anhydrous ammonia. THe nitrided glasses were fiberized at about 720 deg C in air. The dynamic and the equilibrium pH value of the glass increases with the increase of nitrogen content. The incorporation of nitrogen not only increases the glass transition temperature, but also improves the chemical durability and makes it easier to fiberize. Further more, the nitrided glass is more rsistant to devitrification.