原子氢渗入金属或镀层使其韧性下降变脆的现象。多产生于酸洗、电镀、焊接、熔炼、浇铸等过程,以及在高压氢气氛环境下使用的材料,制件,或高强度金属材料。氢脆可分为可逆氢脆和不可逆氢脆两种类型。其特点是通常用肉眼不易观察到,它主要是使金属的延性强度或应力强度降低。在电镀中,氢脆能造成镀件脆裂或镀层脱落。通常的应力 Atom hydrogen into the metal or coating to make the ductile brittle decline in the phenomenon. Produced in the pickling, electroplating, welding, smelting, casting and other processes, as well as high pressure hydrogen atmosphere in the use of materials, parts, or high-strength metal materials. Hydrogen embrittlement can be divided into reversible hydrogen embrittlement and irreversible hydrogen embrittlement two types. Its characteristics are usually not easy to observe with the naked eye, it is mainly to make ductile metal strength or stress intensity reduction. In electroplating, hydrogen embrittlement can cause embrittlement plating or coating off. The usual stress