Small-angle x-ray scattering study of phase separation in amorphous alloys during heating with use of synchrotron radiation
Some recent reports suggest that amorphous Pd/sub 46/Ni/sub 36/P/sub 18/ and Cu/sub 50/Zr/sub 50/ alloys phase separate during heating at temperatures 50--200 K below their crystallization temperatures. We have therefore obtained improved small-angle x-ray scattering (SAXS) measurements during heating of these alloys using a new experimental setup. The experimental improvements included in-the-beam heating using the very-high-intensity x-ray radiation available at the Synchrotron Radiation Laboratory, K.E.K., the use of Joule self-heating of the samples, which is made possible by the high resistivity of the amorphous phase and the use of regularly shaped, constant thickness amorphous tapes obtained by planar flow casting. No evidence of phase separation during heating prior to crystallization was obtained in glassy Pd/sub 46/Ni/sub 36/P/sub 18/ and Cu/sub 50/Zr/sub 50/ alloys.
- Research Organization:
- Laboratoire de Thermodynamique Physico-Chimie Metallurgiques, Institut National Polytechnique de Grenoble, Boi-italic-circumflexte Postale No. 75, F-38042 Saint-Martin-d'Heres, France
- OSTI ID:
- 5222694
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 37:13
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER ALLOYS
PHASE STUDIES
NICKEL ALLOYS
PALLADIUM ALLOYS
ZIRCONIUM ALLOYS
AMORPHOUS STATE
ANNEALING
ELECTRON DENSITY
JOULE HEATING
SMALL ANGLE SCATTERING
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
ALLOYS
BREMSSTRAHLUNG
COHERENT SCATTERING
DIFFRACTION
ELECTRIC HEATING
ELECTROMAGNETIC RADIATION
HEAT TREATMENTS
HEATING
PLASMA HEATING
PLATINUM METAL ALLOYS
RADIATIONS
RESISTANCE HEATING
SCATTERING
360102* - Metals & Alloys- Structure & Phase Studies