中文摘要：

测量了Ca/P摩尔比为0.45的偏磷酸钙玻璃及其在300~700℃下结晶化处理获得玻璃陶瓷的拉曼光谱,对谱峰的振动模式进行了指认,利用拉曼振动频率计算了P—O键长。光谱分析发现偏磷酸钙玻璃在300℃已经开始了结晶相变,不同温度下,sν（PO2）和sν（POP）谱带的振动频率基本不变,随着温度提高,谱峰强度增加,并出现了精细的指纹结构;玻璃陶瓷的表面和内部的结构不同,表面结晶化程度高于内部;结晶过程中,P—O键平均键长会发生变化,随着结晶化程度的提高,骨架上（POP）的P—O键平均键长减小,由159.96 pm变为158.27 pm,侧链（PO2）上的P—O键长增大,由147.90 pm变为149.02 pm。

英文摘要：

In the present paper,calcium metaphosphate glass with molar ratio of Ca/P=0.45 was prepared and Ca（PO3）2 glass-ceramics were obtained by reheating the glass at 300-700 ℃.The Raman spectra of samples were measured.The bands of these Raman spectra were assigned and analyzed.The length of P—O bonds was calculated by using Raman wavenumbers.The results show that the crystal phase in glass was obtained when preserved at 300 ℃ for 3 h;Along with temperature increase,νs（PO2） and νs（POP） bands are stable in frequency,the bands intensity increases and fine structure appears in the Raman spectra fingerprint.The crystallization degree of glass-ceramics surface is higher than the inner.The length of P—O bonds changes during the heating process and crystallization.The length of O—P—O chain bonds changes to 158.27 pm from 159.96 pm,and terminal P—O changes to 149.02 pm from 147.92 pm,when Ca（PO3）2 glass becomes β-Ca（PO3）2 crystal.