Low-temperature thermal conductivity of twinned and untwinned indium-thallium alloys

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5655415

Mitchell, L S

The low temperature lattice thermal conductivity of twinned and untwinned, martensitic and non-martensitic, Indium-Thallium alloys has been measured to probe the effect of twin boundaries on phonon thermal transport. The photon scattering by electrons, sample surfaces, dislocations, and impurities is accounted for adequately by existing theoretical models. The reduced lattice thermal conductivity seen in the twinned samples is attributed to additional phonon scattering by twin boundaries and, for the polycrystalline samples, by grain boundaries. Phonon scattering by twin boundaries is well represented by the acoustic mismatch model.

• Research Organization: Illinois Univ., Urbana, IL (United States)
• OSTI ID: 5655415
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CARBON ADDITIONS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISLOCATIONS
GRAIN BOUNDARIES
IMPURITIES
INDIUM ALLOYS
IRON ALLOYS
LINE DEFECTS
MARTENSITE
MICROSTRUCTURE
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SCATTERING
THALLIUM ALLOYS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
TWINNING