| 摘要 |
A process for improving the corrosion resistance of metals, particularly steels and high nickel content alloys, is provided. The process comprises subjecting metal parts to one or more cryogenic treatment, optionally followed by one or more heat treatments. Cryogenic treatment preferably employs temperatures of between -90°C to -195°C, most preferably -180°C to -195°C. Heat treatment preferably employs temperatures of between l20°C to 175°C. The process may be employed in the treatment of metal parts and components. Heat exchanger tubes, cooler tubes, piping, especially chemical process piping, pumps, reactor vessels and storage tanks produced by a process are provided. |
