放射切除滑膜用镝锂硼玻璃的成玻区域及结构

Glass Formation Area and Structure Study of Dysprosium Lithium Borate System Used for in Vivo Radiation Synovectomy

摘要:

应用通常的熔融淬冷法,测绘Dy2O3Li2OB2O3(简称DyLB)三元系统的成玻相图，显示其成玻区约为(0～31%)Dy2O3·(3%～13%)Li2O·(97%～60%)B2O3 (括号内数字表示质量分数).在玻璃形成区里，采用差热分析、红外光谱、X衍射等分析方法，从组成与结构的关系上分析Dy2O3取代B2O3对DyLB系统玻璃结构和性能的影响.研究表明,玻璃中的［BO3］转变为［BO4］，且Dy2O3对网络单元有积聚效应，能使网络中B2O3链/环之间的结合键能增加，从而使玻璃网络空间连接程度提高，玻

关键词:镝锂硼玻璃; 差热分析; 红外光谱; 玻璃性质

Abstract:

Glass formation region in the Dy2O3Li2OB2O3 (DyLB) ternary system was determined by normal meltingquenching method. The relationship between composition and structure for the DyLB glasses were investigated by differential thermal analysis (DTA), Fourier transformation infrared spectra (FTIR) and Xray diffractive methods. Preliminary results show that the glass formation region of DyLB ternary system is about (0～31%)Dy2O3·(3%～13%)Li2O·(97%～60%)B2O3 (wt %), and that Dy2O3’s replacement of B2O3 turns part of ［BO3］ in the structure into［BO4］, and Dy2O3 has aggregating effect on glass network unit, resulting in the increase of the bond energy between B2O3 chains / rings. In this region, the increase of Dy2O3 content can enhance the crosslinking density in the structure, thus increasing tg and tc of the glasses.

Key words:Dy2O3Li2OB2O3 glass; differential thermal analysis; infrared spectra; glass property