【摘要】 本文论述了真空白炽灯内总压力与寿命变化的关系。分析了水汽、氧气,碳氧化物、氢气以及其他气体对灯泡性能的影响。测试了各种残气组份随寿命的变化情况。介绍了灯泡中传统使用的红磷吸气剂的作用机理及其不足之处,指出对灯丝工作温度较高的场合采用Zr—Al吸气剂,在防止灯泡早期发黑,延长灯泡寿命等方面有明显效果。更多还原

【Abstract】 The relationship between total pressure and life time in incandescent lamp is described here. The effect of water vapour, oxygen, carbon-oxide compound, hydrogen and other gases on bulb performance is analyzed. It is tested that the pressure for each component in residual gases veries in the range of life time. The operating mechanism and the disadvantages for red phosphorus getter which is always used in conventional bulb are pointed out. At the case of higher filament temperature, it is noted that Zr-Al getter should be adopted, because it could eliminate the layer of black spots on the glass surface for bulb in early stage and increase life time.更多还原