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Standard Test Method for Conducting Cyclic Galvanostaircase Polarization
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STANDARD published on 1.8.2021
Designation standards: ASTM G100-89(2021)
Publication date standards: 1.8.2021
SKU: NS-1033813
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
aluminum, corrosion, electrochemical measurement, galvanostaircase, localized corrosion, polarization,, ICS Number Code 25.220.20 (Surface treatment)
Significance and Use | ||||||||||
3.1?In this test method, susceptibility to localized corrosion of aluminum is indicated by a protection potential (Eprot) determined by cyclic galvanostaircase polarization 3.2?The breakdown (3.2.1?Severe crevice corrosion occurred when the separation of Eb and 3.3?DeBerry and Viebeck (3-5) found that the breakdown potentials (3.4?If this test method is followed using the specific alloy discussed it will provide (GSCP) measurements that will reproduce data developed at other times in other laboratories. 3.5?Eb obtained are based on the results from eight different laboratories that followed the standard procedure using aluminum alloy 3003-H14 (UNS A93003). Eb and Eprot are included with statistical analysis to indicate the acceptable range. |
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1. Scope | ||||||||||
1.1?This test method covers a procedure for conducting cyclic galvanostaircase polarization (GSCP) to determine relative susceptibility to localized corrosion (pitting and crevice corrosion) for aluminum alloy 3003-H14 (UNS A93003) (1).2 It may serve as guide for examination of other alloys (2-5). This test method also describes a procedure that can be used as a check for one's experimental technique and instrumentation. 1.2?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?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. |
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2. Referenced Documents | ||||||||||
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