TY - JOUR
T1 - Particle size evolution in Cu-15at%Al mechanically alloyed
AU - Guerrero-Paz, J.
AU - Jaramillo-Vigueras, D.
PY - 1998
Y1 - 1998
N2 - Characterization of the particle size in a Cu-15at%Al powder mixture, processed in a low energy mill, was conducted. Milling times included 1.8, 7.2, 28.8, 54, 90, 180, 360, and 864 Ks. A commercial particle size analyzer, based on the sedimentation-photometry technique, was used to obtain particle size distributions according to frequency of number, volume, or area. Equivalent medium diameter for particles as a function of milling time is reported. These results are supported by observations in optical, scanning and transmission electron microscopes. A high number of submicrometric fragments were detected since the early milling times (1.8 Ks up to 180 Ks). This observation could have relevance for the study of the mechanisms of the mechanical alloying and of the nanometric grain size formation. A competition between fragmentation and coalescence events in the particle population has been observed to take place during the complete milling process.
AB - Characterization of the particle size in a Cu-15at%Al powder mixture, processed in a low energy mill, was conducted. Milling times included 1.8, 7.2, 28.8, 54, 90, 180, 360, and 864 Ks. A commercial particle size analyzer, based on the sedimentation-photometry technique, was used to obtain particle size distributions according to frequency of number, volume, or area. Equivalent medium diameter for particles as a function of milling time is reported. These results are supported by observations in optical, scanning and transmission electron microscopes. A high number of submicrometric fragments were detected since the early milling times (1.8 Ks up to 180 Ks). This observation could have relevance for the study of the mechanisms of the mechanical alloying and of the nanometric grain size formation. A competition between fragmentation and coalescence events in the particle population has been observed to take place during the complete milling process.
UR - http://www.scopus.com/inward/record.url?scp=0032179741&partnerID=8YFLogxK
U2 - 10.1016/S0965-9773(98)00143-3
DO - 10.1016/S0965-9773(98)00143-3
M3 - Artículo
SN - 0965-9773
VL - 10
SP - 1209
EP - 1222
JO - Nanostructured Materials
JF - Nanostructured Materials
IS - 7
ER -