一、前言 电真空材料是指应用于各种电子管、示波管、显象管等电真空器件中的材料。从六十年代初,随着我国国防工业的发展,就开始研制这类材料,发展了以精密合金为主的电真空材料。二十余年来,我国已有几十种牌号、数百个品种规格投入生产。随着材料的发展,成长了一批技术人员和熟练工人,科研、生产基地也都具有相当规模。 First, the foreword Electro vacuum material is used in a variety of electronic tubes, oscilloscopes, picture tubes and other vacuum devices in the material. From the early 1960s, with the development of our country’s defense industry, we started to develop such materials and developed electro-vacuum materials based on precision alloys. More than two decades, China has dozens of brands, hundreds of varieties specifications into production. With the development of materials, a group of technicians and skilled workers have been developed. Scientific research and production bases also have considerable scale.