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Disilicide solid solutions, phase diagram, and resistivities. I. TiSi/sub 2/-WSi/sub 2/

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.337679· OSTI ID:5754671
; ;

The pseudobinary system TiSi/sub 2/--WSi/sub 2/ has been investigated from about 85% TiSi/sub 2/ to 100% WSi/sub 2/ up to a temperature of 1100/sup 0/C. The equilibrium phase diagram which has been established contains a continuous (from 15% to 100% WSi/sub 2/) solid solution with a hexagonal structure (TaSi/sub 2/ type) at low temperatures, below approx.550/sup 0/C. At about 550/sup 0/C WSi/sub 2/-rich alloys split into two phases, the normal tetragonal phase of WSi/sub 2/, which has a very limited solubility for TiSi/sub 2/, and the hexagonal (TaSi/sub 2/) phase with the amount of WSi/sub 2/ in solution decreasing with increasing temperature at about 50% at 1100/sup 0/C. The resistivity of the different alloys has been studied as a function of annealing temperature. There is considerable excess resistivity due to alloy scattering and no evidence of a marked difference in resistivity between the two phases.

Research Organization:
IBM T. J. Watson Research Center, P. O. Box 218, Yorktown Heights, New York 10598
OSTI ID:
5754671
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 60:1; ISSN JAPIA
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HEXAGONAL LATTICES
HIGH TEMPERATURE
INFORMATION
NUMERICAL DATA
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SILICIDES
SILICON ALLOYS
SILICON COMPOUNDS
TETRAGONAL LATTICES
TITANIUM COMPOUNDS
TITANIUM SILICIDES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN SILICIDES
VERY HIGH TEMPERATURE