Calorimetric observations of amorphous and crystalline Ni-Zr alloy formation by solid-state reaction

Journal Article · Sun May 15 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.9049· OSTI ID:5222259

Cotts, E J; Wong, G C; Johnson, W L

Differential scanning calorimetry and x-ray diffraction are utilized in a study of solid-state vitrification of multilayered composites of Ni and Zr. In order to understand better and optimize the amorphizing reaction, we have examined the kinetics of competing reactions: the formation and growth of crystalline intermetallic compounds. The value of the activation energy, E/sub c/, of the initial crystallization of the growing amorphous phase is determined to be E/sub c/ = 2.0 +- 0.1 eV, establishing an upper limit on the thermal stability of the amorphous-diffusion couple

• Research Organization: Keck Laboratory, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 5222259
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:15; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTIVATION ENERGY
ALLOYS
AMORPHOUS STATE
CALORIMETRY
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
ENERGY
FOILS
INTERMETALLIC COMPOUNDS
METALLIC GLASSES
NICKEL ALLOYS
SCATTERING
SOLIDS
SYNTHESIS
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS