Electrochemical impedance spectroscopy and linear polarization applied to evaluation of porosity of phosphate conversion coatings on electrogalvanized steels

被引：89

作者：

de Freitas Cunha Lins, Vanessa

de Andrade Reis, Geraldo Francisco

de Araujo, Carlos Roberto

Matencio, Tulio

机构：

[1] Univ Fed Minas Gerais, Dept Chem Engn, Corros & Surface Engn Lab, BR-30160030 Belo Horizonte, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Chem, BR-31270901 Belo Horizonte, MG, Brazil

来源：

APPLIED SURFACE SCIENCE | 2006年 / 253卷 / 05期

关键词：

phosphate conversion coatings; electrochemical impedance spectroscopy; porosity; linear polarization;

D O I：

10.1016/j.apsusc.2006.06.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, electrochemical impedance spectroscopy and linear polarization are used in determining porosity of zinc phosphates, and of nickel and manganese modified zinc phosphates on electrogalvanized steel. The porosity of the phosphate layers ranges from 0.1% for the manganese-modified hopeite to 8% for hopeite, using the linear polarization and the electrochemical impedance spectroscopy techniques. The porosity values measured using the two techniques were in agreement. All impedance spectra of coated samples showed two steps, with two capacitive arcs and an inductive looping. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2875 / 2884

页数：10

共 30 条

[1] A COMPARATIVE-STUDY OF THE CORROSION PERFORMANCE OF TIN, TI(B,N) AND (TI,AL)N COATINGS PRODUCED BY PHYSICAL VAPOR-DEPOSITION METHODS [J].

AROMAA, J ;

RONKAINEN, H ;

MAHIOUT, A ;

HANNULA, SP ;

LEYLAND, A ;

MATTHEWS, A ;

MATTHES, B ;

BROSZEIT, E .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 140 :722-726

[2] ON SURFACE FACTORS AFFECTING THE PROTECTIVENESS OF ORGANIC COATINGS ON PHOSPHATIZED STEEL [J].

BOMBARA, G ;

BERNABAI, U .

SURFACE TECHNOLOGY, 1980, 11 (06) :393-401

[3] AN ELECTROCHEMICAL INVESTIGATION OF THE DEVELOPMENT OF PHOSPHATE CONVERSION COATINGS [J].

BRETHERTON, N ;

THOMPSON, GE ;

TURGOOSE, S .

CORROSION SCIENCE, 1993, 35 (5-8) :1297-1303

[4] Porosity evaluation of protective coatings onto steel, through electrochemical techniques [J].

Creus, J ;

Mazille, H ;

Idrissi, H .

SURFACE & COATINGS TECHNOLOGY, 2000, 130 (2-3) :224-232

[5] TESTING OF CORROSION-RESISTANT FLUOROPOLYMER COATINGS [J].

DEFLORIAN, F ;

FEDRIZZI, L ;

LOCASPI, A ;

BONORA, PL .

ELECTROCHIMICA ACTA, 1993, 38 (14) :1945-1950

[6] Study of the corrosion behaviour of phosphatized and painted industrial water heaters [J].

Fedrizzi, L ;

Deflorian, F ;

Rossi, S ;

Fambri, L ;

Bonora, PL .

PROGRESS IN ORGANIC COATINGS, 2001, 42 (1-2) :65-74

[7] Phosphate coatings porosity: Review of new approaches [J].

Kwiatkowski, L .

SURFACE ENGINEERING, 2004, 20 (04) :292-298

[8] TOWARDS A BETTER UNDERSTANDING OF CORROSION BENEATH ORGANIC COATINGS [J].

LEIDHEISER, H .

CORROSION, 1983, 39 (05) :189-201

[9] An electrochemical impedance spectroscopy study of the corrosion behaviour of PVD coated steels in 0.5 N NaCl aqueous solution: Part II. EIS interpretation of corrosion behaviour [J].

Liu, C ;

Bi, Q ;

Leyland, A ;

Matthews, A .

CORROSION SCIENCE, 2003, 45 (06) :1257-1273

[10] ELECTROCHEMICAL INVESTIGATIONS OF PHOSPHATE LAYERS BY METAL-DEPOSITION AND CATAPHORETIC PAINTING [J].

LOSCH, A ;

KLUSMANN, E ;

SCHULTZE, JW .

ELECTROCHIMICA ACTA, 1994, 39 (8-9) :1183-1187

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