Contribution to the Study of the Relation between Microstructure and Electrochemical Behavior of Iron-Based FeCoC Ternary Alloys | Zendy

Farida Benhalla-Haddad | Zendy; Sif Eddine Amara | Zendy; A. Benchettara | Zendy; K. Taïbî | Zendy; R. Kesri | Zendy

Open Access

Contribution to the Study of the Relation between Microstructure and Electrochemical Behavior of Iron-Based FeCoC Ternary Alloys

Author(s) -

Farida Benhalla-Haddad,

Sif Eddine Amara,

A. Benchettara,

K. Taïbî,

R. Kesri

Publication year - 2012

Publication title -

journal of analytical methods in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.407

H-Index - 25

eISSN - 2090-8865

pISSN - 2090-8873

DOI - 10.1155/2012/798043

Subject(s) - font , microstructure , ternary operation , materials science , analytical chemistry (journal) , metallurgy , chemistry , art , chromatography , computer science , programming language , visual arts

This work deals with the relation between microstructure and electrochemical behavior of four iron-based FeCoC ternary alloys. First, the arc-melted studied alloys were characterized using differential thermal analyses and scanning electron microscopy. The established solidification sequences of these alloys show the presence of two primary crystallization phases ( δ (Fe) and graphite) as well as two univariante lines : peritectic L + δ (Fe)↔ γ (Fe) and eutectic L↔ γ (Fe) + C graphite . The ternary alloys were thereafter studied in nondeaerated solution of 10 −3 M NaHCO3 + 10 −3 M Na 2 SO 4 , at 25°C, by means of the potentiodynamic technique. The results indicate that the corrosion resistance of the FeCoC alloys depends on the carbon amount and the morphology of the phases present in the studied alloys.

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