中南大学学报（英文版）
中南大學學報（英文版）
중남대학학보（영문판）
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY(ENGLISH EDITION)
2014年
1期
76-82
,共7页
王珂%王吉会%王慧慧%付丛伟%夏大海%郑鑫%党丽华%石江波
王珂%王吉會%王慧慧%付叢偉%夏大海%鄭鑫%黨麗華%石江波
왕가%왕길회%왕혜혜%부총위%하대해%정흠%당려화%석강파
electrochemistry sensor%electrochemical impedance spectroscopy%electrochemical noise%tinplate can%corrosion
The corrosion behavior of tinplate cans containing coffee was investigated using novel electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) sensors. The contents of iron and tin dissolved in cans were detected by inductively coupled plasma mass spectrometer (ICP-MS), and the morphology of corroded surface was observed by optical microscopy and scanning probe microscopy (SPM). The results reveal that the coating resistance, charge transfer resistance and noise resistance decrease with the prolongation of storage time. The iron and tin contents in cans increase with the storage time, while the bump height of coating surface increases from 30 nm to 80 nm during the corrosion of twelve months. The existence of deformation would enhance the corrosion process of tinplate cans. Finally, the corrosion mechanism of tinplate cans in coffee was proposed.
