Scientific Article
previous document  unige:32920  next document
add to browser collection

Strukturuntersuchungen an Siliziden

Nowotny, H.
Published in Monatshefte für Chemie. 1955, vol. 86, p. 385-396
Abstract Structures of the isotype phases of Cr3Si2, V3Si2, Nb3Si2, and Ta3Si2(characteristic space system D2d11) were studied. The formula detd. by x-ray anal. corresponded to M5Si3. Calcd. lattice consts. a and c for the silicides in kX were, resp.: 9.410, 4.747, V; 9.998, 5.062, Nb; and 9.86, 5.05, Ta. In the systems Nb-Si and Ta-Si, isotype phases were found, which can be considered high- or low-temp. modifications. Rotating-crystal and Weissenberg patterns of single crystals indicated tetragonal, space-centered elementary cells with lattice consts. a - 6.557, c 11.860 for Nb5Si3, and a = 6.503, c = 11.849 for Ta5Si3. The systems stabilized by C, V5Si3Nb5Si3 and V5Si3-Zr5Si3, with D88 structures were studied. Plots of cell-vol. against mole % indicated that the former gave a continuous solid soln., whereas the latter is not completely miscible. VSi2 and NbSi2 (C 40 type) were completely miscible in the solid state. In the system VSi2MoSi2 (type C40-C11), MoSi2 was very sol. in VSi2, but only small amts. of VSi2 dissolved in MoSi2.
Keywords SilicidesCrystal structureZirconium silicides
Full text
(ISO format)
PARTHE, Erwin, NOWOTNY, H., SCHMID, Hans. Strukturuntersuchungen an Siliziden. In: Monatshefte für Chemie, 1955, vol. 86, p. 385-396. doi: 10.1007/bf00903622

356 hits



Deposited on : 2014-01-08

Export document
Format :
Citation style :