Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurements
Přeložit název
NORMA vydána dne 15.2.2023
Označení normy: ASTM G102-23
Datum vydání normy: 15.2.2023
Kód zboží: NS-1103219
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
corrosion current, corrosion rate, electrochemical, equivalent weight, polarization resistance, Tafel slopes,, ICS Number Code 77.060 (Corrosion of metals)
Significance and Use | ||||||||
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 Faradays 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. |
||||||||
1. Scope | ||||||||
1.1?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. |
||||||||
2. Referenced Documents | ||||||||
|
Poslední aktualizace: 04.11.2024 (Počet položek: 2 209 323)
© Copyright 2024 NORMSERVIS s.r.o.