一、前言1982年底,某厂生产出一批14吋显象管,经性能测试发现阴极无发射,阴极表面发黑。几百支管子不合格,使生产流水线作业被迫停产。作者用PHI-550型多功能电子能谱仪对显象管中阴极无发射的原因进行了分析。结果表明,阴极无发射的主要原因是硫和碳元素使其中毒所致。另外,还发现涂层不均匀有开裂现象也会引起阴极失效。 First, the foreword By the end of 1982, a factory to produce a group of 14-inch kinescope, the cathode was found to be non-emitting performance test, the cathode surface is black. Hundreds of pipe failed, so that production line operations were forced to stop production. The author uses the PHI-550 multi-functional electron spectrometer to analyze the cause of cathode non-emission in CRT. The results show that the main cathode emission is caused by sulfur and carbon poisoning. In addition, the coating was also found to have uneven cracking phenomenon can cause cathode failure.