Archivio Istituzionale della RicercaA d.c. Joule heating technique allows new application-oriented crystallization products to be obtained from amorphous metallic ribbons under controlled conditions. The structural changes occurring in a material are continuously monitored through on-line measurements of the electrical resistance. Sample crystallization is often marked by a typical resistance bump. A general solution of the equation describing the evolution of the sample temperature and resistance in the course of d.c. Joule heating is found. The crystallization of Fe40Ni40B20, characterized by a strong emission of heat, is treated in detail. Specific parameters of the process are properly determined from a comparison with experimental results. The role of the transfer rate of the crystallization heat to the sample is briefly discussed.
An Exact Model of Dc Joule Heating In Amorphous Metallic Ribbons / Allia, PAOLO MARIA EUGENIO ICILIO; M., Baricco; M., Knobel; P., Tiberto; F., Vinai. - In: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. - ISSN 0921-5093. - 179:(1994), pp. 361-365. [10.1016/0921-5093(94)90227-5]
An Exact Model of Dc Joule Heating In Amorphous Metallic Ribbons
ALLIA, PAOLO MARIA EUGENIO ICILIO;
1994
Abstract
A d.c. Joule heating technique allows new application-oriented crystallization products to be obtained from amorphous metallic ribbons under controlled conditions. The structural changes occurring in a material are continuously monitored through on-line measurements of the electrical resistance. Sample crystallization is often marked by a typical resistance bump. A general solution of the equation describing the evolution of the sample temperature and resistance in the course of d.c. Joule heating is found. The crystallization of Fe40Ni40B20, characterized by a strong emission of heat, is treated in detail. Specific parameters of the process are properly determined from a comparison with experimental results. The role of the transfer rate of the crystallization heat to the sample is briefly discussed.
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https://hdl.handle.net/11583/2498123
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