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Strona główna » Instytut » Pracownicy » Zbigniew Surowiec

dr hab. Zbigniew Surowiec

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Zakład Metod Jądrowych

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pokój: 36
telefon: (081) 537-62-20
e-mail: zbigniew.surowiec@umcs.pl

Specjalność naukowa:

fizyka doświadczalna

Publikacje: Ukryj abstrakty

  1. Z. Surowiec,M. Wiertel,R. Zaleski,M. Budzyński, Positron annihilation study of iron oxide nanoparticles in mesoporous silicate MCM-41 template, Nukleonika, 55(), 2010, 91-96

  2. M. Budzyński,V. I. Mitsiuk,V. V. Ryzhkovskii,Z. Surowiec,T. M. Tkachenko, Preparation and properties of Mn1.5-xCuxSb and Mn 1.5-xZnxSb solid solutions with the B8 structure, Inorganic Materials, 64(), 2010, 1049-1053

  3. P. Budzynski, J. Sielanko, Z. Surowiec, P. Tarkowski, Properties of (Ti, Cr)N and (Al, Cr)N thin films prepared by ion beam assisted deposition, Vacuum, 83(), 2009, 186-189

  4. P. Budzynski, V. A. Skuratov, T. Kochanski, Z. Surowiec, Titanium surface layers after irradiation with swift Kr and Xe ions, Vacuum, 83(), 2009, 190-192

  5. Budzyński, P. Sielanko, J. Surowiec, Z., Properties and phase transition of (Ti, Al)N thin films prepared by ion beam-assisted deposition, Intermetallics, 16(), 2008, 987-994

  6. Budzynski, P. Youssef, A.A. Surowiec, Z. Paluch, R., Nitrogen ion implantation for improvement of the mechanical surface properties of aluminum, Vacuum, 81(10), 2007, 1154-1158

    Abstract:
    The results of the surface treatment of commercial aluminum by nitrogen ion implantation at 120 keV and implanted fluences ranging from 3 X 10(17) to 1.1 x 10(18) ions/cm(2) are reported. The treatment was found to lead to the formation of the hexagonal phase AIN, a decrease in strain and an increase of crystallite sizes. The modification of the surface layer so produced was thought to be a cause of a measured increase in surface microhardness and corresponding decrease in friction coefficient and wear measured in pure methanol. Oxygen found in the surface layers was also thought to play a significant role in determining tribological performance. (c) 2007 Published by Elsevier Ltd.

  7. Surowiec, Z. Goworek, J. Ryczkowski, J. Budzyński, M. Wiertel, M. Sarzyński, J., Mössbauer study of magnetite nanowire in MCM-41 mesoporous silica templates, Nukleonika, 52(), 2007, S33-S36

  8. Wiertel, M. Surowiec, Z. Sarzyński, J. Budzyński, M. Beskrovny, A.I., Structural and magnetic investigations of Sc(Fe1-x Nix)2 compounds by means of Mössbauer effect and neutron diffraction, Nukleonika, 52(), 2007, S71-S75

  9. Youssef, A. A. Budzynski, P. Filiks, J. Surowiec, Z., Improvement of tribological properties of aluminum by nitrogen implantation, Vacuum, 78(2-4), 2005, 599-603

    Abstract:
    The present study reports on improvements of the tribomechanical properties of commercial aluminum especially wear and hardness by nitrogen implantation. The implantation process has been carried out at doses 5 x 10(16), 1 x 10(17) and 6 x 10(17) ions/cm(2) and energy 180 keV. The tribological tests for the friction coefficients and wear were made on a pin-on-disk tribotester with the load 0.98 N. XRD analyses were performed to obtain a characterization of the surface of the implanted sample. The implanted specimens were also annealed at 400 degrees C in addition to the non-implanted specimen for referring. The hardness showed remarkably significant improvement at the higher dose, 6 x 10(17) ions/cm(2). Before annealing, the friction coefficients of the implanted samples were nearly unchanged. After annealing at 400 degrees C, these coefficients exhibited a relative decrease from about 0.33-0.22 at dose 1 x 10(17) ions/cm(2). On the other hand, the wear rates of the implanted samples and the countersample exhibited a great decrease after annealing the samples of aluminum at 400 degrees C whereas the wear decreased from about 38 to 3 mu m(2) for the samples at the higher dose, 6 x 10(17) ions/cm(2). (c) 2005 Elsevier Ltd. All rights reserved.

  10. Surowiec, Z. Sarzynski, J. Budzynski, M. Wiertel, M., Effect of the substitution of Ti for Y on structural properties and hyperfine interactions in Y1-xTixFe2 compounds, Nukleonika, 49(), 2004, S17-S21

    Abstract:
    Room temperature Fe-57 Mossbauer spectroscopy and X-ray diffraction measurements are reported for a series of Y1- xTixFe2 polycrystalline samples. Our research shows that except for x = 0 and x = 1, the samples are a mixture of two C15 and C14 pseudobinary Laves phases. Some Ti atoms occupy the crystallographic positions 8a characteristic of the Y atoms in the cubic C15 structure while the rest of them form the hexagonal C14 phase. However, the lattice constant dependencies on concentration x suggest the occurrence of Y atoms in the positions 4f characteristic of Ti atoms in the hexagonal C14 structure. The partial substitution of Ti atoms for Y atoms is responsible for the HMF changes in the cubic phase. Contrary to the situation taking place in the Zr1-xTixFe2 compounds, magnetic arrangement in the pseudobinary hexagonal phases is not observed at room temperature.

  11. Budzynski, M. Sarzynski, J. Wiertel, M. Surowiec, Z., Effect of Sc substitution for Y on structural properties and hyperfine interactions in Y1-xScxFe2 compounds, Nukleonika, 48(), 2003, S79-S83

    Abstract:
    Measurements of X-ray diffraction and Mossbauer effect were made on a series of Y1-xScxFe2 polycrystalline samples (x = 0.0, 0.2, 0.5, 0.7, 0.8, 1.0). It was found that the system has the cubic MgCu2 structure except for x = 1.0 where hexagonal MgZn2 structure type is stable. The lattice constant decreases with increasing x. The results of Mossbauer effect study at room temperature show that the easy axes of magnetization remain in the <111> direction for the cubic samples and <100> for the hexagonal one. Curie temperatures T-C were determined from temperature dependence of the hyperfine magnetic fields. The concentration dependence of the hyperfine fields and T-C show similar trends, exhibiting a maximum at x = 0.8. The magnetic and structural behaviour show that, in spite of being isoelectronic, the substitution of Y by Sc induces clear changes in the structural and magnetic properties of the compounds under investigation.

  12. Surowiec, Z. Wiertel, M. Beskrovnyi, A. I. Sarzynski, J. Milczarek, J. J., Investigations of microscopic magnetic properties of the pseudo-binary system (Zr1-xTix)Fe-2, Journal of Physics-Condensed Matter, 15(37), 2003, 6403-6414

    Abstract:
    The magnetic structure and hyperfine interactions in the polycrystalline pseudobinary system (Zr1-xTix)Fe-2 for x less than or equal to 0.2 and x greater than or equal to 0.7 were studied using the techniques of neutron diffraction and the Mossbauer effect. The results of our measurements reveal the cubic C 15 and the hexagonal C 14 crystal structure for low and high Ti atom concentration x, respectively. For the ferrimagnetic region of the C15 structure the reduction from 1.58(5) to 1.30(6) muB of Fe magnetic moments with increasing x at room temperature was found. The presence of two hyperfine magnetic fields in the antiferromagnetic C14 phases suggests the existence of small magnetic moments on Fe atoms at 2a in addition to those present at the 6h sites. The magnetic structure refinement for the (Zr0.3Ti0.7)Fe-2 alloy yielded magnetic moments perpendicular to the c axis of 0.19(10) mu(B) at Fe 2a sites at 10 K. The results confirm the spin-canted antiferromagnetic structure with a canting angle of 8degrees at 10 K in the pseudo-binary phase.

  13. Budzynski, M. Sarzynski, J. Surowiec, Z. Wiertel, M., Mossbauer and X-ray diffraction studies of Zr1-xTixFe2 Laves phase compounds, Acta Physica Polonica A, 100(5), 2001, 717-722

    Abstract:
    Mossbauer spectroscopy of Fe-57 and X-ray diffraction measurements in the Zr1-xTixFe2 phase have been made. Our X-ray diffraction spectra revealed that the samples have the cubic C15 crystal structure for low Ti concentration and the hexagonal C14 structure for high Ti concentration. In the range of 0.2 less than or equal to x less than or equal to 0.5 a mixture of both structures occurs. The investigated compounds are paramagnetic at RT for x > 0.80 and magnetic for x less than or equal to 0.8. In the magnetic samples we found four different values of hyperfine magnetic fields. The presence of two hyperfine magnetic fields in the C14 phase suggests magnetic moments on Fe atoms at 2a sites. The obtained epsilon (Q) vs. the x dependence indicates the spin canted antiferromagnetic structure in the hexagonal phase in the range of 0.2 less than or equal to x less than or equal to 0.8.


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