THE PITTING CORROSION OF AMORPHOUS NI63CR12.5FE4SI8B12.5 ALLOY IN CHLORIDE SOLUTION

Authors
ZUO Y LATANISION RM
Citation
Y. Zuo et Rm. Latanision, THE PITTING CORROSION OF AMORPHOUS NI63CR12.5FE4SI8B12.5 ALLOY IN CHLORIDE SOLUTION, Corrosion science, 34(10), 1993, pp. 1697
Citations number
18
Categorie Soggetti
Metallurgy & Mining
Journal title
Corrosion science → ACNP
ISSN journal
0010938X
Volume
34
Issue
10
Year of publication
1993
Database
ISI
SICI code
0010-938X(1993)34:10<1697:TPCOAN>2.0.ZU;2-C
Abstract
The pitting corrosion behavior of amorphous Ni63Cr12.5Fe4Si8B12.5 allo y in NaCl solution was studied using electrochemical methods. Hemisphe rical pits were found to initiate along mechanic polishing lines on th e surface. Electropolishing improved pitting resistance greatly. Poten tiostatic anodic polarization tests showed an incubation time for pit nucleation after which the pits propagated very quickly. The poor pitt ing resistance of this amorphous alloy was ascribed to its repassivati on characteristics.