TY - JOUR
T1 - Electrocatalytic properties of mechanically alloyed Co-20wt%Ni-10wt%Mo and Co-70wt%Ni-10wt%Mo alloy powders
AU - Arce-Estrada, Elsa M.
AU - Lopez-Hirata, Victor M.
AU - Martinez-Lopez, Lobsang
AU - Dorantes-Rosales, Hector J.
AU - Saucedo-Muń oz, Maribel L.
AU - Hernández-Santiago, Felipe
N1 - Funding Information:
The authors wish to thank the financial support from CEGEPI-IPN and CONACYT.
PY - 2003/1/15
Y1 - 2003/1/15
N2 - Mechanically alloyed Co-20wt%Ni-10wt%Mo and Co-70wt%Ni-10wt%Mo (nominal compositions) alloy powders were produced by milling of pure elemental powders. Mechanically alloyed powders were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. MA powder specimens were tested electrollitically in a 30% KOH aqueous solution at 298 K. X-ray diffraction analysis and transmission electron microscopy of milled powders showed the presence of two phases, an fcc solid solution and intermetallic compounds of Ni or Co with Mo. These phases showed a nanometric size. The linear sweep voltammograms confirmed also the presence of two phases in both mechanically alloyed alloy powders. The Co-20wt%Ni-10wt%Mo alloy powders showed the best electrocatalytic activity for hydrogen evolution reaction.
AB - Mechanically alloyed Co-20wt%Ni-10wt%Mo and Co-70wt%Ni-10wt%Mo (nominal compositions) alloy powders were produced by milling of pure elemental powders. Mechanically alloyed powders were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. MA powder specimens were tested electrollitically in a 30% KOH aqueous solution at 298 K. X-ray diffraction analysis and transmission electron microscopy of milled powders showed the presence of two phases, an fcc solid solution and intermetallic compounds of Ni or Co with Mo. These phases showed a nanometric size. The linear sweep voltammograms confirmed also the presence of two phases in both mechanically alloyed alloy powders. The Co-20wt%Ni-10wt%Mo alloy powders showed the best electrocatalytic activity for hydrogen evolution reaction.
UR - http://www.scopus.com/inward/record.url?scp=0037440283&partnerID=8YFLogxK
U2 - 10.1023/A:1021105330821
DO - 10.1023/A:1021105330821
M3 - Artículo
SN - 0022-2461
VL - 38
SP - 275
EP - 278
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 2
ER -