The microstructure of interface of high pressure natrium lamp with differentlifetime has been studied by means of TEM, and the influence of interface struc-ture on the quality of Al_2O_3/Nb seal has been revealed.

• 并利用透射电子显微镜；研究了不同寿命的高压钠灯中玻璃焊料与Nb界面的显微组织结构；揭示了界面结构对Al_2O_3-Nb封接质量的影响.