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快速启动显象管具有启动快、耗电省、寿命长的优点。采用快速启动的关键是使用快速阴极套管材料。 我所研制的Ni-Cr合金快速阴极套管材料,成份为Ni80％、Cr20％。合金不含低饱和蒸气压的元素及对阴极有害的杂质;合金经适当的处理可获得б_b=64～73公斤/毫米~2、延伸率δ≥25％的机械性能;合金的晶粒度为ASTM标准的7—8级这种合金在高温高真空时(800℃)的放气量为1.2×10~(-2)毫升/克。电阻率高ρ=1.08Ω毫米/米,合金经湿氢处理后表面容易黑化,其黑化层性能稳定。合金符合显象管阴极套管材料的要求。 该材料经上海电子管二厂装管试验,显象管启动时间由15秒以上减少到5秒以下,16时显象管阴极耗电功率由4瓦减少到1瓦,达到了美国和日本的水平。
Quick start picture tube with fast start, power consumption, long life advantages. The key to a quick start is to use a fast cathode sleeve material. I developed by Ni-Cr alloy cathode rapid casing material, composition of Ni80%, Cr20%. The alloy does not contain elements with low saturated vapor pressure and impurities harmful to the cathode. The mechanical properties of the alloy can be obtained by appropriate treatment of б_b = 64-73 kg / mm 2, elongation δ ≧ 25%; the grain size of the alloy is ASTM standard grade 7-8 this alloy in the high temperature and high vacuum (800 ℃) deflated amount of 1.2 × 10 -2 ml / g. High resistivity ρ = 1.08Ω mm / m, the surface of the alloy after wet hydrogen treatment is easy to black, the black layer of stable performance. The alloy meets the cathode tube material requirements. The material by the Shanghai Tube Factory loading test tube start-up time from 15 seconds to less than 5 seconds, cathode tube cathode power consumption at 16:00 reduced from 4 watts to 1 watt, reaching the level of the United States and Japan .