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电真空器件的金属零件一般都要经过氢处理,以活泼的氢来置换掉熔解在材料内部的各种杂质气体分子,并使被氧化的金属表面重新还原。此外,金属零件或材料在退火或焊接时,也往往要置于氢气氛的保护中。氢处理对于氢气纯度的要求很高,尤其是对零件质量危害性最大的氧,一般要求其残留量在10ppm以下,即低于0.001%.但目前使用的电化氢(即电解NaCl所得的氢)纯度仅为98.5%,远远不
Electro vacuum device metal parts are generally subjected to hydrogen treatment, with active hydrogen to replace the melting of various impurities inside the material gas molecules, and the oxidation of the metal surface to restore. In addition, metal parts or materials are often placed in the hydrogen atmosphere for protection during annealing or soldering. Hydrogen treatment of hydrogen purity requirements, especially for parts of the most damaging quality of oxygen, the general requirements of the residual amount of 10ppm or less, that is less than 0.001% .However, the current use of electrochemical hydrogen (that is, the electrolysis of hydrogen chloride) Purity is only 98.5%, far from