共 50 条
Correlated pitting stages of 304 stainless steel with recurrence quantification analysis of electrochemical noise
被引:11
作者:
Zhang, Zhen
[1
,2
]
Wu, Xinqiang
[1
]
机构:
[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
来源:
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
|
2019年
/
70卷
/
02期
基金:
中国国家自然科学基金;
关键词:
304 stainless steel;
electrochemical noise;
pitting stages;
recurrence quantification analysis;
wavelet analysis;
STAINLESS-STEEL;
CORROSION PITS;
CARBON-STEEL;
DYNAMICS;
PLOTS;
INITIATION;
TRANSFORM;
GROWTH;
D O I:
10.1002/maco.201810318
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Pitting corrosion behavior of 304 stainless steel (SS) in ferric chloride solutions with different concentrations was investigated by morphology observation and electrochemical noise (EN) analysis. The pitting stages were related to recurrence quantification analysis (RQA) of EN. It was found that the pitting stages of 304 SS in 0.02 and 0.3 M ferric chloride solutions mainly consist of metastable pitting and stable pitting through the morphology observation and wavelet analysis of EN. Through cluster analysis for the whole RQA variables the RQA results can accurately correlate with the pitting stages. The cluster results revealed that the metastable pitting of 304SS has high recurrence rate (RR) and determinism (DET), while the stable pitting has low RR and DET.
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页码:197 / 205
页数:9
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