掺镧多孔生物活性玻璃陶瓷的制备与表征  

Synthesis and Characterizations of Porous Lanthanum Doped Bioactive Glass Ceramics

作　　者：李光大[1] 满毅[2] 薛明[1] 杨为中[1] 吉丽[1] 曹滨[1] 周大利[1] 

机构地区：[1]四川大学材料学院,四川成都610068 [2]四川大学华西口腔医学院,四川成都610068

出　　处：《稀有金属材料与工程》2008年第A01期268-272,共5页Rare Metal Materials and Engineering

基　　金：教育部博士点基金(20060610024)

摘　　要：使用溶胶凝胶法和有机泡沫浸渍工艺制备了(45-x)CaO-xa_2O_3-4.5MgO-33SiO_2-16P_2O_5-0.5CaF_2(0≤x≤5)(质量分数)体系的多孔生物活性玻璃陶瓷。研究了不同含量的氧化镧对材料的晶相组成、力学强度、生物活性、磁性和生物相容性的影响。研究结果表明,La_2O_3的掺入量x≤5时,提高了生物活性玻璃陶瓷的力学强度,赋予了材料一定的磁性能,但当掺入量为x=5时,对材料的生物相容性造成了一定的影响。Lanthanum doped bioactive glass with the nominal composition （wt%） of （45-x）CaO-xLa2O3-4.5MgO-33SiO2-16P2O5-0.5CaF2 （0≤x≤5） was synthesized by sol-gel method. Then porous scaffold was obtained by the spongy dipping method. The effects of different percent of lanthanum on the phases, compressive strength, magnetic property, bioactivity and biocompatibility of samples were investigated. Results showed the doped lanthanum caused some new phase in the glass ceramics, leading to a better mechanical property and magnetic property, but decreased the bioactivity and biocompatibility.

关 键 词：生物活性玻璃陶瓷 磁性 生物活性 

分 类 号：TQ174.6[化学工程—陶瓷工业]