THE POINT-DEFECT MODEL FOR THE PASSIVE STATE

被引：1321
|
作者：
MACDONALD, DD
机构：
[1] Center for Advanced Materials, The Pennsylvania State University, University Park
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1992年 / 139卷 / 12期
关键词：
D O I：
10.1149/1.2069096
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A review is presented of the point defect model (PDM) for the growth and breakdown of passive films on metal and alloy surfaces in contact with aqueous solutions. The model provides a reasonable account of the steady-state properties of cation-conducting and anion-conducting barrier layers on nickel and tungsten, respectively, in phosphate buffer solutions; of the impedance characteristics of passive films on nickel; of the breakdown of passive films on a wide range of metals and alloys; of the distributions in the breakdown parameters (breakdown voltage and induction time); of the role of alloying elements in enhancing the resistance of alloys to passivity breakdown; of transpassive dissolution and electro-polishing; of erosion-corrosion; and of photoinhibition of pit nucleation. Additionally, the PDM has allowed us to formulate a set of principles for designing new alloys and has led to the development of a deterministic method for predicting localized corrosion damage functions.
引用
收藏
页码：3434 / 3449
页数：16
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