TY - JOUR

T1 - Influence of cerium additions on the corrosion behaviour of high pressure die cast AM50 alloy

AU - Mert, Faruk

AU - Blawert, Carsten

AU - Kainer, Karl Ulrich

AU - Hort, Norbert

PY - 2012/12

Y1 - 2012/12

N2 - The influence of Ce additions to AM50 magnesium alloy prepared by high pressure die casting on the microstructure and corrosion behaviour has been investigated. The corrosion behaviour was evaluated by hydrogen evolution, salt spray, potentiodynamic polarization and electrochemical impedance experiments. The results show that Ce addition promotes the formation of Al 11Ce 3 phase and reduces the amount of β-phase (Mg 17Al 12). The corrosion resistance is improved with increasing Ce content which can be attributed to the formation of Al 11Ce 3 phase, reduction of β-phase (reduced galvanic effects) and higher purity of AME50X alloys (melt cleaning effects).

AB - The influence of Ce additions to AM50 magnesium alloy prepared by high pressure die casting on the microstructure and corrosion behaviour has been investigated. The corrosion behaviour was evaluated by hydrogen evolution, salt spray, potentiodynamic polarization and electrochemical impedance experiments. The results show that Ce addition promotes the formation of Al 11Ce 3 phase and reduces the amount of β-phase (Mg 17Al 12). The corrosion resistance is improved with increasing Ce content which can be attributed to the formation of Al 11Ce 3 phase, reduction of β-phase (reduced galvanic effects) and higher purity of AME50X alloys (melt cleaning effects).

KW - A. Magnesium

KW - A. Rare earth elements

KW - B. Polarization

KW - B. SEM

KW - C. Pitting corrosion

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84867229470&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2012.08.011

DO - 10.1016/j.corsci.2012.08.011

M3 - Journal articles

AN - SCOPUS:84867229470

VL - 65

SP - 145

EP - 151

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -