镍及其合金广泛使用于化学及化学工业酸、碱、盐等腐蚀介质之中,使用范围十分广阔。镍合金是很重要的工业材料。从耐腐蚀意义上说,它们介于不锈钢和稀有材料(如钽)之间。镍合金一般使用于具有腐蚀性的无机酸以及含氯化物的环境中。在此腐蚀环境下,多数不锈钢易产生应力腐蚀裂纹 Nickel and its alloys are widely used in chemical and chemical industries acid, alkali, salt and other corrosive media, the use of a very wide range. Nickel alloys are very important industrial materials. In the corrosion-resistant sense, they are between stainless steel and rare materials (such as tantalum). Nickel alloys are generally used in corrosive inorganic acids and chloride-containing environments. In this corrosive environment, most stainless steel is prone to stress corrosion cracking