THE PASSIVATION OF NEWLY GENERATED SURFACE AND KINETICS OF ANODIC-DISSOLUTION OF NICKEL

被引：6

作者：

AGLADZE, T ^{[1
]}

KOLOTYRKIN, Y ^{[1
]}

JANIBAKHCHIEVA, L ^{[1
]}

机构：

[1] KARPOV PHYS CHEM INST,MOSCOW 107120,USSR

来源：

CORROSION SCIENCE | 1990年 / 31卷

关键词：

adsorption; anions; exchange current; fresh surface; kinetics; nickel; Passivation;

D O I：

10.1016/0010-938X(90)90169-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

When bare nickel surface comes in direct contact with aqueous solution of proper ions the equilibrium potential Ee q of the couple Ni/Ni2+ at the metal-solution interface is established for short period of time Δt. The passivation of fresh surface at, t > Δt which results in considerable inhibition of both anodic and cathodic reactions and accompanies by deviation of E from Ee q is due to the formation of monolayer of chemisorbed anions. The passivation effect increases in the order: F-, SO42-, Cl-, Br-, J-. The dissolution of Ni in active state involves consequtive charge transfer steps and disproportionation of reaction intermediates - Ni+ ions. © 1990.

引用

页码：607 / 614

页数：8

共 6 条

[1]

AGLADZE TR, 1988, ELEKTROKHIMIYA, V24, P1443

[2]

ENGELL HJ, 1989, CORROS SCI, V29, P123

[3] THERMODYNAMICS OF ELECTROLYTE-SOLUTIONS - SYSTEM HCL+CACL2+H2O AT 298.15-DEGREES-K [J].