An analysis of electrical resistivity of compositions within the Mo-Si-B ternary system part II: Multi-phase composites

Authors
Beckman, S Cook, BA Akinc, M
Citation
S. Beckman et al., An analysis of electrical resistivity of compositions within the Mo-Si-B ternary system part II: Multi-phase composites, MAT SCI E A, 299(1-2), 2001, pp. 94-104
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
299
Issue
1-2
Year of publication
2001
Pages
94 - 104
Database
ISI
SICI code
0921-5093(20010215)299:1-2<94:AAOERO>2.0.ZU;2-4
Abstract
The temperature dependence of electrical resistivity between 25 and 1500 de greesC was determined for several multiphase composites within the Mo-Si-B system. The electrical behavior of these composites is determined by that o f the single phase components and can be characterized as representative of semimetallic behavior. A predictive model for the resistivity of composite s based on the properties of the single phase benchmark compounds was devel oped based on a logarithmic rule-of-mixture relationship. Error values for the model were calculated based on experimental error in the determination of volume fraction, porosity, and resistivity of each phase as a function o f temperature. Experimental resistivity values for multiphase compositions within the Mo5Si3-MoSi2, Mo(5)Si(3)Bx (T1)-MoB-MoSi2, and Mo(5)Si(3)Bx-Mo5S iB2 (T2)-Mo3Si phase fields are shown to be in good agreement with the mode l to within one standard deviation. (C) 2001 Elsevier Science B.V. All righ ts reserved.