Abstract: Structure, crystallization and dissolution properties of CaO-MgO-SiO2 inorganic glass fiber in the presence of additives (A12O3, Y2O3) were investigated by DTA, XRD, FTIR and ICP-AES techniques. The resul...Abstract: Structure, crystallization and dissolution properties of CaO-MgO-SiO2 inorganic glass fiber in the presence of additives (A12O3, Y2O3) were investigated by DTA, XRD, FTIR and ICP-AES techniques. The results show that with the addition ofAl2O3 and Y2O3, the glass network structure is strengthened and the precipitation of crystals is inhibited for heat-treated fibers. Compared with Y2O3 doped fibers, AI2O3 presents more significant effects on the enhancement of silica network and the inhibition of crystallization in fibers. As for dissolution properties in physiological fluids, though the weight losses, changes of pH values and leached ions concentration lower slightly with the addition ofA1203 and Y203 for the intensified network structure, and fibers still present high dissolution rates.展开更多
基金the National High Technology Research and Development Program ("863" Program) of China (No.2009AA032503)the National Natural Science Foundation of China (Nos.50872098, 51004080)the Open Fund of the Key State Laboratory Breeding Base of Refractories and Ceramics (Wuhan University of Science and Technology (No.G201004)
文摘Abstract: Structure, crystallization and dissolution properties of CaO-MgO-SiO2 inorganic glass fiber in the presence of additives (A12O3, Y2O3) were investigated by DTA, XRD, FTIR and ICP-AES techniques. The results show that with the addition ofAl2O3 and Y2O3, the glass network structure is strengthened and the precipitation of crystals is inhibited for heat-treated fibers. Compared with Y2O3 doped fibers, AI2O3 presents more significant effects on the enhancement of silica network and the inhibition of crystallization in fibers. As for dissolution properties in physiological fluids, though the weight losses, changes of pH values and leached ions concentration lower slightly with the addition ofA1203 and Y203 for the intensified network structure, and fibers still present high dissolution rates.