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Characterization of electrochemical noise transients caused by cracking processesBajt Leban, Mirjam ; Doleček, Valter ; Legat, AndražThe main aim of the research work described in the paper has been to compare the electrochemical voltage and current noise transients measured SRLT (Slow-Strain-Rate-Test) tests with the ... corresponding displacement rate determined from measurements of the elongation of tensile test specimens during such tests. Electrochemical noise (EN) was measured between three electrodes made from the same piece of austenitic stainless steel, of type AISI 304. One of the electrodes, which was subjected to a constant, slowly increasing stress, scted as a working electrode. It formed a voltage source with one of neighbouring electrodes, and a current source with the other. The measurements of elongation were performed simultaneously with the electrochemical noise measurements, and were later transformed into displacement rate data by means of simple differential calculus. The results of the tests confirmed that cleavage of the surface of the metal triggers electrochemical reactions, which can be reliably detected by using the EN technique. However, these processes were indicated as a sequence of various processes with different time constants. It is believed that analysis of the displacement rate at each moment, and its comparison with the EN spikes generated by the same cracking events could help to clarify these processes.Vir: EMCR `2000 [Računalniška datoteka] : 7th International symposium on electrochemical methods in corrosion research, Budapest, Hungary May 28 - June 1, 2000 : proceedings (Paper No. 118)Vrsta gradiva - prispevek na konferenciLeto - 2000Jezik - angleškiCOBISS.SI-ID - 366695
Avtor
Bajt Leban, Mirjam |
Doleček, Valter |
Legat, Andraž
Teme
displacement rate |
voltage transients |
AISI 304 |
current transients |
electrochemical noise |
slow-rate-load-test |
crack velocity |
stress corrosion cracking |
napetostne fluktuacije |
tokovne fluktuacije |
elektrokemijski šum |
napetostno korozijsko pokanje |
hitrost pokanja |
nerjavno jeklo
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Bajt Leban, Mirjam | 16394 |
Doleček, Valter | 00869 |
Legat, Andraž | 08281 |
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