CORROSION STUDIES. XXIII. PASSIVITY OF THE Sn75-Zn ALLOY (in German)
Investigations were made of the origin of the easy passivation and good corrosion stability of a galvanic -alloy of the type 75% Sn-55% Zn. The potentiostatic polarization curve of this heterogeneous aliby was com- . pared with its components in 1 M NaOH. The potential range of the corrosion of tin and zinc in the active state is such that both phases mutually reduce their solution velocity and therefore reduce the critical passivation current of the alloy. The electroohemical behavior of the galvanic alloy does not correspond to the presence of tin and zinc as independent phases and is explained by a passive layer of another composition existing on the independent metals. This layer exhibits in the passive state a low corrosion current which together with the low critical passivation current explains the good corrosion behavior of the alloy. (tr-auth)
- Research Organization:
- Staatliches Forschungsinstitut fur Materialschutz, Prague
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-015042
- OSTI ID:
- 4157950
- Journal Information:
- Collection Czechoslov. Chem. Communs., Journal Name: Collection Czechoslov. Chem. Communs. Vol. Vol: 25
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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