TY - JOUR
T1 - Electrochemical properties of porous Pd-based bulk metallic glasses
AU - Qin, Fengxiang
AU - Xie, Guoqiang
AU - Wada, Takeshi
AU - Zhu, Shengli
AU - Dan, Zhenhua
PY - 2013
Y1 - 2013
N2 - The corrosion behavior of porous Pd42.5Cu30Ni 7.5P20 bulk metallic glasses with various porosities in Hanks' solution was investigated. The results revealed that all bulk metallic glasses exhibited similar corrosion behavior. The bulk metallic glasses with the porosity of 0 and 18% were spontaneously passivated with passive current densities between 10-2 and 10-1 A/m2 in anodic polarization curves. The bulk metallic glasses with 40 and 55% porosity exhibited an anodic process with the current density increasing gradually. As the anodic potential increasing, no obvious passivity breakdown occurred in the anodic polarization process. The polarization resistance decreased with the increasing of the porosity from 0 to 55%. The breakdown potential of the passive film for the bulk metallic glass with 55% porosity was about 100mV lower than that of the 0% porosity Pd42.5Cu30Ni7.5P 20 bulk metallic glass.
AB - The corrosion behavior of porous Pd42.5Cu30Ni 7.5P20 bulk metallic glasses with various porosities in Hanks' solution was investigated. The results revealed that all bulk metallic glasses exhibited similar corrosion behavior. The bulk metallic glasses with the porosity of 0 and 18% were spontaneously passivated with passive current densities between 10-2 and 10-1 A/m2 in anodic polarization curves. The bulk metallic glasses with 40 and 55% porosity exhibited an anodic process with the current density increasing gradually. As the anodic potential increasing, no obvious passivity breakdown occurred in the anodic polarization process. The polarization resistance decreased with the increasing of the porosity from 0 to 55%. The breakdown potential of the passive film for the bulk metallic glass with 55% porosity was about 100mV lower than that of the 0% porosity Pd42.5Cu30Ni7.5P 20 bulk metallic glass.
KW - Electrochemical properties
KW - Palladium-based bulk metallic glasses
KW - Porosity
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U2 - 10.2320/matertrans.MF201314
DO - 10.2320/matertrans.MF201314
M3 - Article
AN - SCOPUS:84883173532
SN - 1345-9678
VL - 54
SP - 1347
EP - 1350
JO - Materials Transactions
JF - Materials Transactions
IS - 8
ER -