Microstructure influence on corrosion behavior of a Fe-Cr-V-N tool alloy studied by SEM/EDS, scanning Kelvin force microscopy and electrochemical measurement

A3069
QC 20130213
Microstructure influence on corrosion behavior of an N-based tool alloy (Fe-Cr-V-N) has been studied. Electron microscopy analysis showed two types of hard phases in the alloy. One-pass mode scanning Kelvin force microscopy (KFM) was used to investigate relative nobility of the hard phases. Volta potential mapping indicates higher nobility for the hard phases than the alloy matrix, and, the V- and N-rich particles exhibit the highest Volta potential. Post-polarization analysis by SEM revealed localized dissolution initiated in matrix regions adjacent to hard phase particles, and the boundary region surrounding the Cr- and Mo-rich particles is more prone to localized corrosion.

Ejnermark, SebastianUddeholms AB, Sweden (author)
Andersson, JörgenUddeholms AB, Sweden (author)
Claesson, Per MartinKTH,RISE,SP Kemi Material och Ytor,Yt- och korrosionsvetenskap(Swepub:kth)u15tzvsb (author)
Pan, JinshanKTH,Yt- och korrosionsvetenskap(Swepub:kth)u17ks6cf (author)
KTHYt- och korrosionsvetenskap (creator_code:org_t)

By the author/editor: Sababi, Majid; Ejnermark, Sebas ...; Andersson, Jörge ...; Claesson, Per Ma ...; Pan, Jinshan

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Other Chemical E ...

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