Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: właściwości elektryczne i magnetyczne

Sortuj według:

Ogranicz wyniki do:

Influence of heat treatment on changes on structure and magnetic properties of CoSiB alloy

Nowosielski R., Zajdel A., Lesz S., Kostrubiec B., Stokłosa Z.

Journal of Achievements in Materials and Manufacturing Engineering

2008

Vol. 27, nr 2

147-150

Purpose: This paper describes influence of heat treatment on changes on structure and magnetic properties of the amorphous Co77Si11.5B11.5 alloy. Design/methodology/approach: The following experimental techniques were used: X-ray diffraction (XRD), static and dynamic measurements of magnetic properties (magnetic balance, fluxmeter, Maxwell-Wien bridge). Findings: The crystallization process involved by heat treatment leads to significant changes of structure and magnetic properties of amorphous Co77Si11.5B11.5 alloy. Research limitations/implications: Practical implications: The attractive properties of Co-Si-B alloy are of special interest for basic research on the materials as well as for their potential applications, like magnetic sensors. According to the results presented in this paper the examined Co77Si11.5B11.5 alloy as a soft magnetic material may be used in noise filters, saturable reactors, miniature inductance elements for abating spike noise, zero-phase current transformers, and magnetic heads etc., i.e. devices which are expected to exhibit high levels of permeability at high frequencies. Originality/value: It has been shown that thermal annealing at temperature close to the crystallization temperature leads to a significant increase of the initial magnetic permeability.

Crystallization of amorphous Co77Si11.5B11.5 alloy

Nowosielski R., Zajdel A., Lesz S., Kostrubiec B., Stokłosa Z.

Archives of Materials Science and Engineering

2007

Vol. 28, nr 3

141-148

Purpose: The investigation results of crystallization of amorphous Co77Si11.5B11.5 alloy in tape form, obtained by melt spinning method during annealing in temperature range 373-873 K with step of 50 K in time 1 h, have been presented in the paper. Design/methodology/approach: The following experimental techniques were used: X-ray diffraction (XRD), electrical resistivity in situ measurements (four-point probe) static and dynamic measurements of magnetic properties (magnetic balance, fluxmeter, Maxwell-Wien bridge). Findings: The changes of magnetic properties connected with the structure changes involved by crystallization process have been investigated of amorphous Co77Si11.5B11.5 alloy. Practical implications: Amorphous magnetic materials have been around for some time and their applications can be found in many types of industrial products. They include transformers, motors, and a wide variety of magnetic components in sensors, power electronics, electrical energy control/management systems, telecommunication equipment and pulse power devices. Originality/value: It has been stated that heat treatment leads to crystallization leads to a significant increase of the initial magnetic permeability.