利用红外(IR)光谱、X射线衍射(XRD)、扫描电镜(SEM)等手段研究了CO2激光扫描弯曲对硼硅酸盐玻璃微观结构的影响。结果表明激光扫描产生的熔化冷却过程使玻璃存在轻微的分相倾向, 导致玻璃中原先存在的［BO3］三角体结构单元与Na2O结合向［BO4］四面体结构转化, 同时Si聚集程度提高, Si—O键强增加。未经激光加工样品存在SiO2晶相引起的微弱衍射峰, 且晶粒呈大小不一的近似球状, 激光扫描过的样品不存在明显晶相, 呈较为均匀的玻璃态。

Influence of CO2 laser bending on glass microstructure are studied by means of infrared (IR) spectra, X-ray powder diffraction (XRD) and scanning electron microscope (SEM). Test results show that slight phase separating tendency occurrs during the laser bending process, and the original triquetrous elements of ［BO3］ change into the tetrahedral elements of ［BO4］ by combining Na2O. Meanwhile, aggregation extent of Si increases and leads an enhancement of the Si—O bond intension. There is SiO2 crystal phase in the un-irradiated specimen with no obvious crystal phase in the irradiated one. And irregular globular grains of different dimension could be observed in the original specimen. On the contrast, the processed one presentes a character of uniform glass-phase.