Corrosion behaviour of stainless steels in pressurized hot water containing chloride and sulphate anions

摘要

The corrosion behaviour of stainless steel 316 in simulated hot (up to supercritical) geothermal water containing chloride and sulphate has been studied. A continuous flow apparatus has been used. The apparatus was equipped with a tubular reactor made of SS316, which is also the corrosion-sample. The tubular reactor was ex posed to temperatures from 20 to 400 °C at 250 bar pressure. Stress corrosion cracking and pitting were detected after some hundred hours of exposure.