Ruthenium Aluminides: Deformation Mechanisms and Substructure Development

Technical Report · Wed May 11 04:00:00 EDT 2005

DOI:https://doi.org/10.2172/877368· OSTI ID:877368

Pollock, Tresa M ^[1]

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1. University of Michigan

Structural and functional materials that can operate in severe, high temperature environments are key to the operation of a wide range of energy generation systems. Because continued improvements in the energy efficiency of these systems is critical, the need for new materials with higher temperature capabilities is inevitable. Intermetallic compounds, with strong bonding and generally high melting points offer this possibility for a broad array of components such as coatings, electrode materials, actuators and/or structural elements. RuAl is a very unusual intermetallic compound among the large number of B2compounds that have been identified and investigated to date. This material has a very high melting temperature of 2050?C, low thermal expansion, high thermal conductivity and good corrosion resistance. Unlike most other high temperature B2 intermetallics, RuAl possesses good intrinsic deformability at low temperatures. In this program fundamental aspects of low and high temperature mechanical properties and deformation mechanisms in binary and higher order RuAl-based systems have been investigated. Alloying additions of interest included platinum, boron and niobium. Additionally, preliminary studies on high temperature oxidation behavior of these materials have been conducted.

• Research Organization: The Regents of the University of Michigan, Ann Arbor, MI
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: FG02-00ER45820
• OSTI ID: 877368
• Report Number(s): DOE/ER/45820-1; TP-F003224
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACTUATORS
BONDING
BORON
COATINGS
CORROSION RESISTANCE
DEFORMATION
ELECTRODES
ENERGY EFFICIENCY
FUNCTIONALS
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
MELTING
MELTING POINTS
NIOBIUM
OXIDATION
PLATINUM
RUTHENIUM
THERMAL CONDUCTIVITY
THERMAL EXPANSION
intermetallics
mechanical behavior