THE CHARACTERIZATION OF THE TARNISHING OF CU-15NI-8SN AND CU-5AL-5SN ALLOYS

被引：20

作者：

SUTER, T ^{[1
]}

MOSER, EM ^{[1
]}

BOHNI, H ^{[1
]}

机构：

[1] SWISS FED LABS MAT TESTING & RES,CH-8600 DUBENDORF,SWITZERLAND

来源：

CORROSION SCIENCE | 1993年 / 34卷 / 07期

关键词：

D O I：

10.1016/0010-938X(93)90292-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion and layer formation of the alloys Cu-15Ni-8Sn and Cu-5Al-5Sn in 0.1 M NaOH solution upon exposure to air have been investigated using X-ray Photo-electron Spectroscopy. For the alloy Cu-15Ni-8Sn an enrichment of the nickel and tin ions is revealed if the sample is prepared electrochemically in a 0.1 M NaOH solution. Nickel acting as a barrier hinders the migration of the tin ions and as a result a thin and protective tarnishing film consisting of Cu(I) compounds is formed. In the 0.1 M NaOH solution a strong tin dissolution is observed for the alloy Cu-5Al-5Sn and a thick and porous oxide film consisting of Cu(II) compounds is formed. An exposure to air results in tin enrichment. As a consequence, a higher corrosion rate is observed for the alloy Cu-5Al-5Sn in the 0.1 M NaOH solution and an improved corrosion behaviour under atmospheric conditions which is most probably due to the presence of tin.

引用

页码：1111 / 1122

页数：12

共 14 条

[1]

[Anonymous], 1963, ATLAS EQUILIBRES ELE

[2]

BECERRA JG, 1988, ELECTROCHIM ACTA, V33, P613

[3] XPS AND UPS EXAMINATIONS OF THE FORMATION OF PASSIVE LAYERS ON NI IN 1-M SODIUM-HYDROXIDE AND 0.5 M SULFURIC-ACID [J].

HOPPE, HW ;

STREHBLOW, HH .

SURFACE AND INTERFACE ANALYSIS, 1989, 14 (03) :121-131

[4]

Malinowski E. R., 1980, FACTOR ANAL CHEM, V3

[5] SPUTTER REDUCTION OF OXIDES BY ION-BOMBARDMENT DURING AUGER DEPTH PROFILE ANALYSIS [J].

MITCHELL, DF ;

SPROULE, GI ;

GRAHAM, MJ .

SURFACE AND INTERFACE ANALYSIS, 1990, 15 (08) :487-497

[6]

POURBAIX M, 1963, ATLAS EQUILIBRES ELE, P478

[7]

SCHWERTE PL, 1988, VDI164 FORTSCHR BE 5

[8] HIGH-RESOLUTION X-RAY PHOTOEMISSION SPECTRUM OF VALENCE BANDS OF GOLD [J].

SHIRLEY, DA .

PHYSICAL REVIEW B, 1972, 5 (12) :4709-&

[9]

SPECKMANN HD, 1987, THESIS U DUSSELDORF

[10] THE INVESTIGATION OF THE PASSIVE BEHAVIOR OF COPPER IN WEAKLY ACID AND ALKALINE-SOLUTIONS AND THE EXAMINATION OF THE PASSIVE FILM BY ESCA AND ISS [J].

STREHBLOW, HH ;

TITZE, B .

ELECTROCHIMICA ACTA, 1980, 25 (06) :839-850

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