论文部分内容阅读
FV520B steel,17-4PH steel and Inconel 718 alloy are investigated as the proper used materials for the impeller of the expander in this work.The general corrosion and pitting corrosion properties of the chosen materials are compared studied in RT,80℃ and 150℃ under certain solution concentration of HBr and Acetic,which is similar with the service work situation of the expander.