哥们,建议不要直接从网上摘录这些内容,还是直接学习原版的标准可能效果会更好一点: 1. ASTM A380 / A380M - 13 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems; 2. ASTM A967 / A967M - 13 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts.
pickling: a chemical process for cleaning and descaling stainless steel and other alloy parts, equipment, and systems.
passivation: removal of exogenous iron or iron from the surface of stainless steels and higher alloys by means of a chemical dissolution, most typically by a treatment with an acid solution that will remove the surface contamination and enhance the formation of the passive layer.