THE PASSIVE BEHAVIOR OF 304-STAINLESS-STEEL IN PC-H2O AND DME-H2O MIXTURES

被引：7

作者：

SHIFLER, DA ^{[1
]}

MORAN, PJ ^{[1
]}

KRUGER, J ^{[1
]}

机构：

[1] USN ACAD,DEPT ENGN MECH,ANNAPOLIS,MD 21402

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 07期

关键词：

PASSIVITY; BREAKDOWN; ORGANIC-WATER MIXTURES; NONAQUEOUS SOLVENTS; 304 STAINLESS STEEL; DIMETHOXYETHANE; PROPYLENE CARBONATE;

D O I：

10.1016/0013-4686(94)00353-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The passivation and breakdown behavior of 304 stainless steel in propylene carbonate (PC) or dimethoxyethane (DME) mixtures with water and containing 0.5 M LiAsF6 were studied. The air-formed film of 304 stainless steel provides a good passive film that resists breakdown. No pitting was observed in either PC-H2O-0.5 M LiAsF6 mixtures or mixed DME-H2O-0.5 M LiAsF6 solutions if the polarizations were conducted below the oxidation potential [1800 mV (sce)] of the hexafluoroarsenate electrolyte. It is apparent that even small amounts of water were sufficient to stabilize the passive film on stainless steel through a probable oxide-oxyhydroxide formation. Fitting of the 304 stainless steel was observed in both mixed organic-water solutions at potentials above the oxidation potential of AsF6- because of the lack of passivating mechanisms such as salt film formation, electropolymerization, or oxide-oxyhydroxide formation.

引用

页码：897 / 905

页数：9

共 38 条

[1] CHARACTERIZATION OF ETHER ELECTROLYTES FOR RECHARGEABLE LITHIUM CELLS [J].