MECHANICAL ALLOYING OF BISB SEMICONDUCTING ALLOYS

Authors
MARTINLOPEZ R LENOIR B DEVAUX X DAUSCHER A SCHERRER H
Citation
R. Martinlopez et al., MECHANICAL ALLOYING OF BISB SEMICONDUCTING ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 248(1-2), 1998, pp. 147-152
Citations number
9
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
248
Issue
1-2
Year of publication
1998
Pages
147 - 152
Database
ISI
SICI code
0921-5093(1998)248:1-2<147:MAOBSA>2.0.ZU;2-V
Abstract
Polycrystalline Bi100-xSbx (x = 7, 10, 12, 15, 22) semiconducting allo ys were synthesized by mechanical alloying in order to achieve perform ant homogeneous thermoelectric materials. The influence of the milling parameters on the final homogeneity and morphology of the powders, su ch as ball-to-powder weight ratios (BPR = 10:1, 40:1, 92:1) and balls sizes (diameters of 30 and 20 mm), was investigated. Powder samples we re characterized by X-ray diffraction, differential scanning calorimet ry, scanning electron microscopy and electron microprobe analysis. The results show that the samples obtained with the 10:1 BPR and four bal ls of 30 mm in diameter present the best homogeneity whatever the allo y composition. (C) 1998 Elsevier Science S.A. All rights reserved.