{"term":{"id":"01358","title":"corrosion rate","longtitle":"IUPAC Gold Book - corrosion rate","doi":"10.1351\/goldbook.C01358","code":"C01358","status":"current","also defines":"<em>also defines<\/em>: corrosion current","mentioned":"<em>mentioned<\/em>: corrosion current","definitions":[{"id":1,"text":"The amount of substance transferred per unit time at a specified surface. Using Faraday's law, the corrosion rate, \\(\\nu_{\\mathrm{cor}}\\), can be formally expressed as an electric current which at the corrosion potential is called the corrosion current, \\(I_{\\mathrm{cor}}\\), e.g. for the anodic dissolution of one component of a material with \\(\\nu_{\\mathrm{cor}}\\) in \\(\\pu{mol s-1}\\) and \\(I_{\\mathrm{cor}}\\) in \\(\\mathrm{A}\\) one obtains \\(I_{\\mathrm{cor}}=n\\ F\\ \\nu_{\\mathrm{cor}}\\), \\(n\\) being the charge number of the electrode reaction and \\(F\\) the Faraday constant.","links":[{"term":"Faraday constant","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/F02325"},{"term":"amount of substance","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/A00297"},{"term":"charge number","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C00993"},{"term":"corrosion","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C01351"},{"term":"corrosion potential","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C01357"},{"term":"dissolution","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/D01806"},{"term":"electric current","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/E01927"},{"term":"electrode reaction","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/E01960"}],"sources":["PAC, 1989, 61, 19. 'Electrochemical corrosion nomenclature (Recommendations 1988)' on page 20 (https:\/\/doi.org\/10.1351\/pac198961010019)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/C01358\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/C01358\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/C01358\/plain"},"citation":"Citation: 'corrosion rate' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.C01358","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-05-01T12:56:48+00:00"}}