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논문 기본 정보

자료유형
학술저널
저자정보
Da-Hai Xia (Department of Chemical and Materials Engineering University of Alberta) Yashar Behnamian (Department of Chemical and Materials Engineering University of Alberta) Jing-Li Luo (Department of Chemical and Materials Engineering University of Alberta) Stan Klimas (Atomic Energy of Canada Ltd)
저널정보
한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY 제16권 제4호
발행연도
2017.8
수록면
194 - 200 (7page)
DOI
https://doi.org/10.14773/cst.2017.16.4.194

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초록· 키워드

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Stress-corrosion cracking (SCC) of alloy 600 and alloy 800 in 0.5 mol/L thiosulfate solution during constantstrain was investigated using electrochemical noise (EN) combined with 3-D microscope techniques. Thein-situ morphology observation and EN results indicate that the SCC process could be divided into threestages: (1) passive film stabilization and growth, (2) crack initiation, (3) and crack growth. Power SpectralDensity (PSD) and the probability distribution obtained from EN were used as the “fingerprint” to distinguishthe different processes. During passive film stabilization and growth, the current noise signals resembled“white noise”: when the crack initiated, many transient peaks could be seen in the current noise and thewavelet energy at low frequency as well as the noise resistance decreased. After crack propagation, thenoise amplitudes increased, particularly the white noises at low and high frequencies (WL and WH) in thePSDs. Finally, the detection of metal structure corrosion in a simulated sea splash zone and pipeline corrosionin the atmosphere are established.

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