Corrosion behaviour of aluminium alloys and 316L stainless steel in propylene glycol and ethylene glycol water solution

摘要

The corrosion behaviour of two aluminium alloys (AA1050 and AA5052) and 316L stainless steel was studied in 30% ethylene glycol and propylene glycol water-based solution. The sample made of 316L stainless steel exhibits the highest corrosion resistance in all testing solutions. It was shown that investigated aluminium alloys show comparable electrochemical behaviour in both water-glycol solutions. In the case of ethylene glycol testing solution higher values of the cathodic and anodic current densities were found for all investigated samples. Therefore, the solution of ethylene glycol is a more corrosive environment compared to the propylene glycol solution.