JOULE-HEATING EFFECTS IN THE AMORPHOUS FE40NI40B20 ALLOY

被引：77

作者：

ALLIA, P

BARICCO, M

TIBERTO, P

VINAI, F

机构：

[1] UNIV TURIN, DIPARTIMENTO CHIM INORGAN CHIM FIS & CHIM MAT, I-10125 TURIN, ITALY

[2] IST ELETTROTECNICO NAZL GALILEO FERRARIS, I-10125 TURIN, ITALY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.47.3118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Joule heating on the amorphous Fe40Ni40B20 alloy are investigated by measuring the time behavior of the electrical resistance of ribbon strips during such a treatment. The structural transformations occurring in subsequent stages of the process are studied by means of x-ray-diffraction, differential-scanning-calorimetry, and magnetic-permeability measurements. A continuous evolution from a fully amorphous to a fully crystalline structure may be followed. The crystallization mechanisms observed in Joule-heated samples differ from the ones occurring under conventional heating conditions. The electrical resistance displays a bump in the course of Joule heating. A quantitative model relating such a bump to the extra heat released to the sample by fast crystallization is proposed and discussed.

引用

页码：3118 / 3125

页数：8

共 30 条

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