Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Tuan, NQ (Author) Other; Alves, AC (Author) Other; Toptan, F (Author) Other; Lopes, AB (Author) Other; Pinto, AMP (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION

Vol. 66

Pages: 1504-1511

ISSN: 0947-5117

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00G-YWP

DOI: 10.1002/maco.201508360

Abstract (EN): The localized corrosion and electrochemical behaviour of Al-0.28 wt.% Sc and Al-0.24 wt.% Sc-0.07 wt.% Yb alloys have been studied in 3.5 wt.% NaCl solution. The results showed that the impurity intermetallic phases containing Fe can act as cathodes and promote localized corrosion in the surrounding matrix. Yb had strong effect on the polarization behaviour in the anodic domain of Al-Sc alloy by improving the pitting corrosion resistance of this alloy. It has been deduced that a high number density of fully coherent nano-sized Al3Sc or Al-3(Sc, Yb) precipitates in heat treated alloys can enhance the passivation tendency of these alloys.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8