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Influence of Microstructure on Corrosion of As‐cast ZE41
Author(s) -
Zhao M.C.,
Liu M.,
Song G. L.,
Atrens A.
Publication year - 2008
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200700246
Subject(s) - eutectic system , corrosion , materials science , metallurgy , microstructure , galvanic cell , galvanic corrosion , matrix (chemical analysis) , composite material
Corrosion of ZE41 initiated in the α‐Mg matrix adjacent to the eutectic micro‐constituent and was attributed to micro‐galvanic corrosion of the α‐Mg matrix coupled to the eutectic micro‐constituent. The eutectic micro‐constituent did not act as a corrosion barrier and did not stop the advance of the corrosion. As a consequence, the α‐Mg matrix corroded over the whole surface with little corrosion of the inter‐connected eutectic micro‐constituent.