English

应用科学学报 ›› 2005, Vol. 23 ›› Issue (2): 209-213.

• 论文 • 上一篇    下一篇

Fe2O3-CaO-SiO2体系铁磁微晶玻璃的磁性及生物活性

杨家宽1, 杨述华2, 何归丽1, 肖波1   

  1. 1. 华中科技大学环境科学与工程学院, 湖北武汉 430074;
    2. 华中科技大学同济医学院, 湖北武汉 430074
  • 收稿日期:2003-11-25 修回日期:2004-08-27 出版日期:2005-03-31 发布日期:2005-03-31
  • 作者简介:杨家宽(1973-),男,湖北鄂州人,副教授,博士,E-mail:yjiakuan@126.com
  • 基金资助:
    华中科技大学校医工结合基金资助项目(A260J02)

The Magnetic Properties and Bioactivity of Ferromagnetic Glass-Ceramics in the System Fe2O3-CaO-SiO2

YANG Jia-kuan1, YANG Shu-hua2, HE Gui-li1, XIAO Bo1   

  1. 1. College of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2. Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2003-11-25 Revised:2004-08-27 Online:2005-03-31 Published:2005-03-31

PDF

68

摘要： 制备了添加少量B2O3和P2O5后的Fe2O3-CaO-SiO2体系铁磁微晶玻璃,并进行了微观结构分析、XRD分析、磁性检测以及生理模拟液的浸泡实验.实验结果表明,制备的微晶玻璃材料同时具备磁性和生物活性这两种重要性能.不经过核化处理在1 000℃晶化2 h后能够获得较理想的磁铁矿主晶相和硅灰石次晶相均匀致密分布的微观组织,所得微晶玻璃具有最佳的磁性能.铁含量提高能够增加微晶玻璃的磁性,然而会抑制微晶玻璃表面羟基磷灰石的形成,从而降低其生物活性.

关键词: 铁磁微晶玻璃, 热种子, 生物活性, 磁性能, 生物陶瓷, 温热疗法, 羟基磷灰石

Abstract: Bioactive and ferromagnetic glass-ceramics are useful as thermoseeds for hyperthermia treatment of cancer.The ferromagnetic glass-ceramics in the system FeO-Fe2O3-CaO-SiO2 have been prepared with the addition of a small amount of B2O3 and P2O5.The microstructure analysis, XRD, magnetometer test and soaking in simulated body fluid have been carried out in the study of the ferromagnetic glass-ceramics.The results show that the glass-ceramics have two important properties:magnetic properties and bioactivity.Better microstructure with the main crystal magnetite and secondary crystal wollastonite evenly distributed can be obtained through the optimal heat treatment carried out directly under 1 000℃ for two hours without nucleation, and the magnetic properties of the ferro-magnetic glass-ceramics thus made are the best in quality.With the increase of Fe content, the magnetic properties tend to increase.On the other hand, Fe can suppress the formation of the apatite on the surface of glass-ceramics.It is, therefore, necessary to carry out in-depth research to find the way to balance the effects of Fe.

Key words: ferromagnetic glass-ceramics, bioactivity, magnetic properties, bioceramics, hydroxypatite, thermoseed, hyperthermia

中图分类号: