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Cover Picture: Materials and Corrosion. 11/2015
Publication year - 2015
Publication title -
materials and corrosion
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201570111
Subject(s) - dissolution , zinc , metallurgy , materials science , corrosion , alloy , nickel , coating , galvanization , phase (matter) , electrochemistry , electrode , chemical engineering , composite material , chemistry , layer (electronics) , organic chemistry , engineering
Cover: Hot‐formed zinc alloy coated steels for automotive industry were investigated by coulometric ICP‐OES (alloy coating) and OCP line‐scan (welding spots). It could be shown that the hot‐forming induced alloying of zinc with iron leads to preferential dissolution of zinc in the initial phase and to a parallel dissolution of iron and zinc in the second phase. For zinc‐nickel alloys the initial preferential zinc dissolution leads to a fast de‐alloying and the dissolution of the nickel rich phase occurs at rather anodic potentials. However, the zinc‐nickel coatings are more resistant to evaporation and the defect formation in the welding spot is less significant. More detailed information can be found in: M. Wiesener, B. Schinkinger, G. Grundmeier , Complementary in‐situ electrochemical ICP‐OES and corrosion studies of hot‐formed zinc alloy coated steel, Materials and Corrosion 2015 , 66 , 1198 .