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Analysis of the Thermal and Magnetic Properties of Amorphous Fe61Co10Zr2.5Hf2.5Me2W2B20 (Where Me = Mo, Nb, Ni Or Y) Ribbons

Gruszka K., Nabiałek M., Szota M., Bloch K., Gondro J., Pietrusiewicz P., Sandu A. V., Mustafa Al Bakri A. M., Walters K., Walters S., Garus S., Dośpiał M., Mizera J.

Archives of Metallurgy and Materials

2016

Vol. 61, iss. 2A

641--644

The paper presents the results of structural and magnetic properties and thermal stability for a group of functional materials based on Fe61Co10Zr2.5Hf2.5Me2W2B20 (where Me = Mo, Nb, Ni or Y). Samples were obtained in the form of ribbons using melt-spinning method. The X-ray diffraction patterns of investigated samples confirmed their amorphous structure. Based on the analysis of DSC curves characteristic temperatures: glass forming temperature (Tg), crystallization temperature (Tx) and temperature range of the supercooled liquid ΔTx were determined. Small addition of transition metals elements has strong influence on magnetic and thermal parameters of studied materials. The comprehensive studies revealed that in terms of magnetic properties the Ni-addition resulted in highest reduction in coercivity and anisotropy field.

Why do the spheres stay suspended in Orbitz (sometimes!)?

Walters K., Williams G. B.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

447-454

Orbitz is a non-carbonated soft drink, within which flavoured gel spheres (orbs) are suspended. It comes in five different flavours and colours; in the current experiments, we have concentrated on orange, red, white and yellow orbitz, particularly the first two. Interestingly, in what must have been a rogue batch of red Orbitz, the orbs readily settled. In the present communication, we address two related questions. First, why do the orbs generally remain in suspension? Is it the matched densities of the orbs and the surrounding liquid or is it the distinctive rheology of the liquid? We show that, although both may be involved, rheology is certainly the dominant influence. Secondly, why did the orbs settle readily in the rogue red sample? We again show that (imperfect) rheology is responsible for the malfunction.