MAGNETIC PROPERTIES AND MICROSTRUCTURE OF A BULK AMORPHOUS Fe61Co10Ti3Y6B20 ALLOY, FABRICATED AS RODS AND TUBES
Marcin Nabiałek , Katarzyna Błoch , Karol Szlązak , Michał Szota
AbstractIn this paper, studies are presented that characterize a bulk amorphous Fe61Co10Ti3Y6B20 alloy. Samples were fabricated in two forms: as a rod of 1 mm in diameter and as a tube of 1 mm in the outer diameter. The investigated material was obtained using the injection method, whereby the liquid alloy was injected into a copper mould. Using an Xray diffractometer, a scanning electron microscope and computer tomography, the microstructures of these rapidly cooled samples were studied. Based on the obtained results, it was found that both the rod and the tube were fully amorphous. The crosssections of the broken rod and tube were characterized by a mixed rupture consisting of smooth chevron and river patterns. This shows that there are regions of different ductility distributed throughout the volume of a sample. Threedimensional images of the investigated materials, obtained with computer tomography, allowed the determination of the contribution of the pores (and their size) to the total volumes of the samples. The investigated alloy is a ferromagnetic material exhibiting good softmagnetic properties such as a high saturation magnetization, a high magnetic permeability and a low value of the coercive field. The technique of injecting the liquid alloy into a copper mould, combined with the suctioncasting method, can be used to produce toroidal cores that exhibit highly promising properties for a successful application in the construction of electric motors.
|Journal series||Materiali in Tehnologije, ISSN 1580-2949|
|Publication size in sheets||0.5|
|Keywords in English||bulk amorphous alloys; Xray diffractometry; electron scanning microscopy; computer tomography; saturation magnetization; coercivity|
|Score|| = 15.0, 28-11-2017, ArticleFromJournal|
= 15.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 0.436 (2) - 2016=0.483 (5)|
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