A STUDY OF THE PASSIVE BEHAVIOR OF BERYLLIUM IN AQUEOUS-SOLUTIONS

被引：13
|
作者：
GULBRANDSEN, E
JOHANSEN, AMJ
机构：
[1] Department of Chemistry, University of Oslo, N-0315 Oslo, P.O. Box 1033, Blindern
来源：
CORROSION SCIENCE | 1994年 / 36卷 / 09期
关键词：
D O I：
10.1016/0010-938X(94)90050-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The passive behaviour of commercially pure Be(99.0 and 99.8%) has been studied by means of electrochemical measurements, solution analyses and electron microscopy. Aqueous test solutions (25-degrees-C, pH 1-15) of orthophosphate, orthoborate, carbonate, formiate, acetate, oxalate or NaOH were employed. In some solutions, Be exhibited a potential independent passive current density up to the oxygen evolution potential, whereas pitting corrosion was initiated in other solutions. The passive current depended on the pH and the concentration of the weak acids in the solution. The passive film was identified (ex situ) as microcrystalline BeO.
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页码：1523 / &
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