Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Pavol Duhaj"'
Publikováno v:
Journal of Alloys and Compounds. 483:20-23
The five-stage devitrification of rapidly quenched Al 89 Ni 6 Sm 5 and Al 86 Ni 6 Sm 5 Pd 3 ribbons has been studied by differential scanning calorimetry and electrical resistivity measurements. The formed phases have been identified by X-ray diffrac
Publikováno v:
Materials Science and Engineering: A. 355:88-95
Experimental results of the compositional dependence of the critical shear stress at low temperatures and of several structural relaxation characteristics at elevated temperatures are compared and examined with respect to singularities of the behavio
Publikováno v:
Czechoslovak Journal of Physics. 52:A109-A112
Magnetomechanical properties of the strips cut from the Fe64Ni10Nb3Cu1Si13B9 amorphous alloy ribbons were measured in as-quenched state and after annealing for 1 h in vacuum from 350 to 550°C. The maximum values of the magnetomechanical coupling coe
Publikováno v:
Kaczkowski, Z, Vlasak, G, Svec, P, Duhaj, P & Ruuskanen, P 2002, ' Magnetomechanical coupling in Fe73.5Cu1Nb1Ta2Si13.5B9 alloy ', Czechoslovak Journal of Physics, vol. 52, no. Suppl. 1, pp. A141-A144 . https://doi.org/10.1007/s10582-002-0033-0
The Fe73.5Cu1Nb1Ta2Si13.5B9 samples were measured in as-quenched state and after annealing for 1 h in vacuum from 100 to 700°C. The maximum values of the magnetomechanical coupling coefficient (km=0.38) were obtained after annealing at 450°C. The s
Publikováno v:
Czechoslovak Journal of Physics. 52:199-202
The magnetic behavior of nanocrystalline Fe73.5Nb4.5Cr5B16Cu1 alloys is investigated in a series of specimens with different volume fractions of crystalline phase. It is shown that the Curie temperature of amorphous phase firstly decreases after stru
Publikováno v:
Czechoslovak Journal of Physics. 52:145-150
Processes controlling transformation in three rapidly quenched nanocrystal-forming systems, Finemet, Nanoperm and Hitperm, were analyzed using a novel approach which provides the distribution of true activation energies of nanocrystallization and the
Publikováno v:
Journal of Non-Crystalline Solids. 287:167-170
Using continuous-heating differential scanning calorimetry (DSC) and X-ray diffraction, the planar-flow casted Fe54Ni20Cu1Nb3Si13B9 amorphous ribbons have been investigated. In the as-prepared alloy, a heating rate dependence of the crystallization k
Publikováno v:
Materials Science and Engineering: A. :371-374
Fe–Co–B amorphous alloys exhibit anomaly in their magnetic properties which has been attributed to a short-range order of Fe 3 Co or FeCo around specific Co concentrations. In the present work, crystallization behavior of amorphous (Fe 100− x C
Application of isochronal dilatation measurements for determination of viscosity of amorphous alloys
Publikováno v:
Materials Science and Engineering: A. :472-475
The viscosity of metallic glasses and its temperature dependence is well descriptive of the amorphous structure and reflects the structural changes or the influence of preparation conditions on the thermodynamic state of these materials. Determinatio
Publikováno v:
Materials Science and Engineering: A. :569-573
The technique of rapid quenching from the melt (planar flow casting method) was used to prepare active brazing Ag-Cu-Ti alloys with varying Ag and increased Ti content for joining alumina ceramics in form of ribbons 0.1mm thick and 40 mm wide. Compos