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一、前言对于电子束管电子枪零件所用的不锈钢材料的要求是:具有导磁率低、剩磁小、可塑性好、机械强度高、点焊性能好、易于除气以及在大气中常温下不易氧化等工艺性能。奥氏体不锈钢1Cr 18N·9与 Cr16 N·14等材料都具有上述优点,价格又低廉。因此,广泛地应用于显象管、示波管、指示管等电子束器件中作为电子枪零件的主要材料。由于奥氏体不锈钢中含有较高的 Cr,在高温下热处理后,其表面易形成铬的氧化物,
I. Introduction The requirements for stainless steel used in electron beam tube electron gun parts are as follows: low magnetic permeability, small remanence, good plasticity, high mechanical strength, good spot welding performance, easy outgassing and easy oxidation in the atmosphere at room temperature Process performance. Austenitic stainless steel 1Cr 18N · 9 and Cr16 N · 14 and other materials have the above advantages, the price is low. Therefore, it is widely used as a main material of electron gun components in electron beam devices such as a CRT, an oscilloscope and a pointing tube. As austenitic stainless steel contains higher Cr, after high temperature heat treatment, the surface is easy to form chromium oxide,