A10 Cathodic Protection .ppt

of 72
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Information Report



Views: 0 | Pages: 72

Extension: PDF | Download: 0

  Paint School JPS-E/Cathodic/1 Organisation Chart   Jotun Cathodic Protection JotunCathodicProtection JotunDecorative(Scandinavia)JotunProtectiveCoatingsJotunDecorativePaintsJotunMarineCoatings JotunPaints JotunPowder Coatings Jotun Group  Paint School JPS-E/Cathodic/2 Corrosion of a metal or alloy ã Corrosion is a reaction between the metal and the surrounding environment ã The corrosion rate depends on the properties of the metal and the corrosivity of the environment. ã Corrosion is dissolution of the metal, among other things involving the release of electrons:Fe Fe + 2e 2+  Paint School JPS-E/Cathodic/3 What is cathodic protection ? ã Cathodic protection (CP) is a method for reducing the corrosion rate of a metal. ã  The principle is based on “Supplying electrons to the base material”. ã This is done by either:  –  Connecting the structure to a more electro-negative material (Sacrificial anode)  –  Connecting the structure to an external electron source (Impressed current)  Paint School JPS-E/Cathodic/4 How to protect a structure Corrosion Protection can be achieved by : ã Sacrificial Anode Cathodic Protection System ã Impressed Current Cathodic Protection SystemBoth systems supply electrons to the structure.The structure will become more negative and metal dissolution will be prevented
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks