The effect of chloride ions on chrome-molybdenum steel
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In the petrochemical industry, many pipes and equipment are made of chromomolybdenum steel, and strict requirements are placed on chloride ions during cleaning and operation, with limits set at less than 25 ppm. Why do chloride ions have such a significant impact on chromomolybdenum steel? Please, fellow sailors, discuss this.
You don’t even know this! Stress corrosion!
Reply to 2# huogy11121112: What I want to know is the principle of the reaction
The corrosion of ferroalloys by salt solutions containing chloride ions is caused by the fact that chloride ions can form complexes with iron ions, thereby destroying the dense oxide layer on the metal surface. Steel and stainless steel cannot be used in solutions with high chlorine content. It’s best to find a more specialized book to read on corrosion mechanisms.