摘要
研究CaO-MgO-SiO2系高温熔体黏度变化以及CaO-MgO-SiO2陶瓷纤维的析晶变化和溶解行为。结果表明,熔体黏度随着温度的升高而降低,其mCaO/mMgO对熔体的黏度影响较大。CaO-MgO-SiO2生物可溶性陶瓷纤维的析晶温度为850℃左右,纤维组成中适当的mCaO/mMgO有利于提高纤维的析晶温度。含氧化锆的可溶性陶瓷纤维有利于提高纤维的析晶温度。CaO-MgO-SiO2生物可溶性陶瓷纤维在模拟人体肺液Gamble溶液中显示了较高的生物可溶性。随着溶解时间的延长,纤维中的Si4+,Mg2+,Ca2+的浸出浓度增加,纤维中的铝元素和铁元素基本上不溶解。纤维中含有氧化锆不利于纤维的溶解。
The viscosity of CaO-MgO SiO2 system melts and the recrystallization behavior and solubility of soluble ceramic fibers are investigated. The results indicate that the viscosity of the melt of CaO- MgO-SiO2 decreases as temperature increases, and the CaO/MgO ratio in the melt has a remarkable influence on the viscosity of the melt. The fibers start crystallization at about 850℃ the CaO/MgO ratio of the fibers may be adjusted to raise the crystallization temperature, and the addition of ZrO2 in the fibers increases the crystallization temperature. The fibers have high bio solubility in the Gamble solution, and the concentrations of Si^4＋ , Mg^2＋ , Ca^2＋ in the Gamble solution increase with the time passing by, whereas the concentrations of Al^3＋ and Fe^3＋ change little.
出处
《武汉科技大学学报》
CAS
2008年第3期238-241,共4页
Journal of Wuhan University of Science and Technology
基金
湖北省自然科学基金资助项目(2005ABB029)
关键词
生物可溶性
陶瓷纤维
析晶
溶解
bio-solubility
ceramic fiber
recrystallization
solution
