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Standard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurements

ASTM G102-23

Organization:
ASTM - ASTM International
Year: 2023

Abstract: 3.1 Electrochemical corrosion rate measurements often provide results in terms of electrical current. Although the conversion of these current values into mass loss rates or penetration rates is based on Faraday’s Law, the calculations can be complicated for alloys and metals with elements having multiple valence values. This practice is intended to provide guidance in calculating mass loss and penetration rates for such alloys. Some typical values of equivalent weights for a variety of metals and alloys are provided. 3.2 Electrochemical corrosion rate measurements may provide results in terms of electrical resistance. The conversion of these results to either mass loss or penetration rates requires additional electrochemical information. Some approaches for estimating this information are given. 3.3 Use of this practice will aid in producing more consistent corrosion rate data from electrochemical results. This will make results from different studies more comparable and minimize calculation errors that may occur in transforming electrochemical results to corrosion rate values.
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    Standard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurements

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contributor authorASTM - ASTM International
date accessioned2024-12-17T22:31:49Z
date available2024-12-17T22:31:49Z
date copyright2023
date issued2023
identifier otherg0102-23.pdf
identifier urihttp://yse.yabesh.ir/std;query=autho1826AF67FCDC52736159DD6ED52F014A/handle/yse/337713
description abstract3.1 Electrochemical corrosion rate measurements often provide results in terms of electrical current. Although the conversion of these current values into mass loss rates or penetration rates is based on Faraday’s Law, the calculations can be complicated for alloys and metals with elements having multiple valence values. This practice is intended to provide guidance in calculating mass loss and penetration rates for such alloys. Some typical values of equivalent weights for a variety of metals and alloys are provided. 3.2 Electrochemical corrosion rate measurements may provide results in terms of electrical resistance. The conversion of these results to either mass loss or penetration rates requires additional electrochemical information. Some approaches for estimating this information are given. 3.3 Use of this practice will aid in producing more consistent corrosion rate data from electrochemical results. This will make results from different studies more comparable and minimize calculation errors that may occur in transforming electrochemical results to corrosion rate values.
languageEnglish
titleStandard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurementsen
titleASTM G102-23num
typestandard
page8
statusActive
treeASTM - ASTM International:;2023
contenttypefulltext
scope1.1 This practice covers the providing of guidance in converting the results of electrochemical measurements to rates of uniform corrosion. Calculation methods for converting corrosion current density values to either mass loss rates or average penetration rates are given for most engineering alloys. In addition, some guidelines for converting polarization resistance values to corrosion rates are provided. 1.2 The values stated in SI units are to be regarded as standard. Other units of measurement are included in this standard because of their usage. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
identifier DOI10.1520/G0102-23
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