Investigation of corrosion protection of steel by polyaniline films

被引:172
作者
Santos, JR
Mattoso, LHC
Motheo, AJ
机构
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
[2] EMBRAPA, CNPDIA, BR-13560970 Sao Carlos, SP, Brazil
关键词
polyaniline; corrosion protection; steel;
D O I
10.1016/S0013-4686(97)00052-2
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
In the present study potentiodynamic polarisation curves were obtained for carbon and stainless steel in contact with 3% sodium chloride aqueous solution saturated with air in order to evaluate the capacity of polyaniline in the emeraldine oxidation state to protect the surface against corrosion processes. A high stability of the PAni films was observed with a gain of the corrosion potential around 270 mV more positive in the substrate covered with PAni than in the case without it. Corrosion of steel could be prevented using the conducting polymers as a protective layer. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:309 / 313
页数:5
相关论文
共 19 条
[1]   Inhibition of corrosion of steels with the exploitation of conducting polymers [J].
Ahmad, N ;
MacDiarmid, AG .
SYNTHETIC METALS, 1996, 78 (02) :103-110
[2]   CORROSION INHIBITION IN HCL USING METHYL PYRIDINES [J].
AYERS, RC ;
HACKERMAN, N .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1963, 110 (06) :507-513
[3]   CHARACTERIZATION OF A SOLID-STATE POLYANILINE-BASED TRANSISTOR - WATER-VAPOR DEPENDENT CHARACTERISTICS OF A DEVICE EMPLOYING A POLYVINYL-ALCOHOL) PHOSPHORIC-ACID SOLID-STATE ELECTROLYTE [J].
CHAO, SH ;
WRIGHTON, MS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (22) :6627-6631
[4]   EFFECT OF POLYANILINE ON OXYGEN REDUCTION IN BUFFERED NEUTRAL SOLUTION [J].
CUI, CQ ;
LEE, JY .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 367 (1-2) :205-212
[5]   MODIFICATION OF THE ELECTROCHEMICAL AND CORROSION BEHAVIOR OF STAINLESS-STEELS WITH AN ELECTROACTIVE COATING [J].
DEBERRY, DW .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1985, 132 (05) :1022-1026
[6]   ELECTROCHEMICAL-BEHAVIOR OF POLYANILINE IN AROMATIC SULFONIC-ACIDS [J].
DHAWAN, SK ;
TRIVEDI, DC .
POLYMER INTERNATIONAL, 1991, 25 (01) :55-60
[7]  
JASTY S, 1995, POLYM MAT SCI ENG, V72, P565
[8]  
Jones D.A., 1992, PRINCIPLES PREVENTIO
[9]  
JOSEPH J, 1988, B ELECTROCHEM, V4, P469
[10]   CORROSION PROTECTION OF MILD-STEEL BY COATINGS CONTAINING POLYANILINE [J].
LU, WK ;
ELSENBAUMER, RL ;
WESSLING, B .
SYNTHETIC METALS, 1995, 71 (1-3) :2163-2166