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Titolo:
Evaluation of thin defect-free epoxy coatings using electrochemical impedance spectroscopy
Autore:
Zhang, SY; Zhou, WF; Luo, XW; Li, SJ;
Indirizzi:
Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 nghai 200433, Peoples R China Fudanlesiv, Dept Macromol Sci, Lab Mol Engn Polymers, Shanghai 200433, Peop Fudan Univ Shanghai Peoples R China 200433 lymers, Shanghai 200433, Peop
Titolo Testata:
JOURNAL OF APPLIED ELECTROCHEMISTRY
fascicolo: 11, volume: 28, anno: 1998,
pagine: 1277 - 1281
SICI:
0021-891X(199811)28:11<1277:EOTDEC>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORROSION PROTECTION; MOISTURE TRANSPORT; WATER-ABSORPTION; POLYMER-COATINGS; RESINS; PERFORMANCE; STEEL;
Keywords:
electrochemical impedance spectroscopy; epoxy coating; water sorption; coating resistance; double layer capacitance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Zhou, WF Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China Fudan Univ Shanghai Peoples R China 200433 433, Peoples R China
Citazione:
S.Y. Zhang et al., "Evaluation of thin defect-free epoxy coatings using electrochemical impedance spectroscopy", J APPL ELEC, 28(11), 1998, pp. 1277-1281

Abstract

The water sorption of thin defect free epoxy films and coatings on aluminium electrodes was studied using the gravimetric method and electrochemical impedance spectroscopy. The results show that the double layer capacitance of the wetted surface of the aluminium electrode under the epoxy him is considerably smaller than that of a bare aluminium electrode, except in the early period of immersion. The resistivity of the solution absorbed in the epoxy coating is much higher than that of the bulk solution. A method for approximately determining the equilibrium water sorption of the epoxy coatingson the metal surface from the double layer capacitance is reported.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:53:58