关键词: 陶瓷纤维;析晶;生物溶解行为

Abstract: In order to evaluate the effect of pre-heating on bio-solubility of CaO-MgO-SiO2 fibers,the bio-solubility of the fibers with different heat-treatments was investigated.The reaction of fibers with Gamble solution was characterized by XRD,SEM and ICP-AES.The results show that heat-treatments lead to the crystallization and a higher dissolution rate than the original fibers and the fibers heated at 1100 ℃ show the highest dissolution rate.The dissolution of these fibers is mainly affected by the interface(silicon-rich homogeneous phase and alkaline earth silicate phase)of the phases,the variety of the composition in homogeneous phase and the degree of the shrinkage.

Key words: ceramic fiber;crystallization;bio-solubility