采用阶梯热处理的方式对Bi2O3-SiO2基玻璃进行析晶处理,得到了具有不同结晶率和透明度的Bi4Si3O12(BSO)基玻璃陶瓷.实验表明,分段热处理有利于控制BSO基玻璃陶瓷中晶粒的数量和尺寸,从而影响玻璃陶瓷的透明度和发光性质.分段热处理后样品的透射谱显示,BSO基玻璃陶瓷(在600℃保温1h,然后升温至800℃保温1 h)的透过率可达73.1％(λ＞ 500 nm).制备出的BSO基玻璃陶瓷具有和BSO单晶相似的发光性质,在可见光波段(380～680 nm)有发光,且发光强度与结晶率成正比.低温(14 K)下,该BSO基玻璃陶瓷的发光强度较室温下提高了约12倍.
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