EFFECT OF THE DIRECTION OF THE INCLUSIONS ON THE TESTED SURFACE ON SUSCEPTIBILITY TO PITTING CORROSION IN STAINLESS-STEELS

被引：4

作者：

DESCHIAPPARELLI, ER ^{[1
]}

CACERES, SP ^{[1
]}

机构：

[1] UNIV NACL TRUJILLO,TRUJILLO,PERU

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 06期

关键词：

D O I：

10.1007/BF00544652

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was made of the induction time of pitting (t(i)) at constant potential in a stainless steel 316 L specimen in deareated NaCl solutions. The influence of the inclusion content in the steel on t(i) was examined, in particular the effect of the inclusions' orientation on the surface of the specimen tested. It was found that the induction time at constant potential and under similar experimental conditions depends on the inclusions' orientation on the test specimen surface; when the direction of the inclusions is transverse to the rolling direction, t(i) is shortened in comparison with the tested surface planes containing the rolling direction. The pitting initiation sites were the matrix-sulphide inclusions interphase. The microcavities associated with them could be preferential sites for pit nucleation.

引用

页码：1454 / 1458

页数：5

共 16 条

[1]

ECKLUND G, 1971, JERNKONTOREST ANN, V155, P637

[2]

ECKLUND SG, 1974, J ELECTROCHEM SOC, V121, P467

[3]

FREIMAN LI, 1972, ZASHCH MET, V8, P693

[4]

HENTHORNE H, 1975, SULFIDE INCLUSIONS S, P445

[5] STOCHASTIC APPROACH FOR PITTING CORROSION MODELING .1. THE CASE OF QUASI-HEMISPHERICAL PITS [J].

MOLA, EE ;

MELLEIN, B ;

DESCHIAPPARELLI, EMR ;

VICENTE, JL ;

SALVAREZZA, RC ;

ARVIA, AJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (05) :1384-1390

[6]

Schiapparelli E. R., 1987, Nondestructive Testing Communications, V3, P39, DOI 10.1080/10589758708952932

[7]

Sedricks A. J., 1983, International Metals Reviews, V28, P295

[8] STOCHASTIC THEORY OF PITTING CORROSION [J].

SHIBATA, T ;

TAKEYAMA, T .

CORROSION, 1977, 33 (07) :243-251

[9]

SHREIR LL, 1976, CORROSION, V1, P182

[10] PITTING CORROSION OF 18CR-8NI STAINLESS STEEL [J].

STREICHER, MA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1956, 103 (07) :375-390

← 1 2 →