Electrochemical Noise Generation During Stress Corrosion Cracking of the High-Strength Aluminum AA 7075-T6 Alloy
Electrochemical noise generation during Stress Corrosion Cracking (SCC) of high-strength aluminum AA 7075-T6 alloy has been investigated in 3.5% NaCl solution under free corrosion potential. The electrochemical noise was observed as spontaneous potential fluctuations. In the results, the power spect...
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| Published in: | Corrosion (Houston, Tex.) Vol. 45; no. 2; pp. 136 - 141 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-02-1989
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Electrochemical noise generation during Stress Corrosion Cracking (SCC) of high-strength aluminum AA 7075-T6 alloy has been investigated in 3.5% NaCl solution under free corrosion potential. The electrochemical noise was observed as spontaneous potential fluctuations. In the results, the power spectra densities were found to decrease with an increase in frequency. A low frequency (LF) noise was obtained with all the specimens tested and it characteristically indicated LF or "flicker" noise. The noise generated from the corroding specimen/bulk solution interface was found, generally, to increase with the degree of corrosion. The cracking of the specimen gave the highest noise amplitudes in most cases; the cracking is also indicated by the highest standard deviation peaks. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
| ISSN: | 0010-9312 1938-159X |
| DOI: | 10.5006/1.3577831 |