The 'Weldaprime' project: developing an anti-corrosion zinc-free primer for steel

摘要

The "WeldaPrime" project aim was to develop a primer which is zinc-free, has low organic content and can be applied as a thin coating to provide weld-through capability without affecting weld quality and yet providing adequate corrosion protection. Steel, especially carbon steel, is used widely in a number of industry sectors, such as oil and gas, chemical, construction and marine industries. The protection of carbon steel against corrosion is critical not only in-use but also during transportation and storage at the steel yard. Zinc-based primers are the most commonly used method for corrosion protection of the steel, protecting the steel via sacrificial galvanic protection mechanisms. However, maintaining a balance between corrosion protection and weldability can be a challenge.