TY - JOUR
T1 - Characterization of Cu-Co alloys produced by mechanosynthesis and spark plasma sintering
AU - Diaz Barriga Arceo, L.
AU - Cruz-Rivera, J. J.
AU - Cabañas-Moreno, J. G.
AU - Tsuchiya, K.
AU - Umemoto, M.
AU - Calderon, H.
PY - 2000
Y1 - 2000
N2 - Mechanical alloying and sintering by the spark plasma sintering technique have been used to obtain Cu-Co alloys. Microstructure characterization and measurement of magnetic properties are reported. The produced alloys contain 50, 66 and 75 at% Cu. They have been prepared from pure elemental powders in a high-energy planetary mill under an inert Ar atmosphere. Microstructure characterization of the as milled powders has been performed by X-ray diffraction and TEM methods. A supersaturated solid solution is found after 100 hr of milling. Sintering produces grains of Cu containing a fine dispersion of Co particles. Similar X-ray diffraction patterns are produced by as milled powders and sintered products. However their magnetic response is different. The magnetic hysteresis curves are measured and important changes in coercive force and magnetization field are found as a function of Co content. Some changes have been observed between the powder and sintered specimens that support the results obtained by the magnetic hysteresis curves.
AB - Mechanical alloying and sintering by the spark plasma sintering technique have been used to obtain Cu-Co alloys. Microstructure characterization and measurement of magnetic properties are reported. The produced alloys contain 50, 66 and 75 at% Cu. They have been prepared from pure elemental powders in a high-energy planetary mill under an inert Ar atmosphere. Microstructure characterization of the as milled powders has been performed by X-ray diffraction and TEM methods. A supersaturated solid solution is found after 100 hr of milling. Sintering produces grains of Cu containing a fine dispersion of Co particles. Similar X-ray diffraction patterns are produced by as milled powders and sintered products. However their magnetic response is different. The magnetic hysteresis curves are measured and important changes in coercive force and magnetization field are found as a function of Co content. Some changes have been observed between the powder and sintered specimens that support the results obtained by the magnetic hysteresis curves.
UR - http://www.scopus.com/inward/record.url?scp=12944333246&partnerID=8YFLogxK
M3 - Artículo de la conferencia
AN - SCOPUS:12944333246
SN - 0255-5476
VL - 343
SP - II/-
JO - Materials Science Forum
JF - Materials Science Forum
T2 - ISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials
Y2 - 30 August 1999 through 3 September 1999
ER -