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Wyszukujesz frazę "Prusik, K." wg kryterium: Autor


Tytuł:
Amorphization and liquid state separation in Ni80-2xCuxFexP20 alloys
Amorfizacja i podział w stanie ciekłym w stopach Ni80-2xCuxFexP20
Autorzy:
Ziewiec, K.
Prusik, K.
Różycka, M.
Tematy:
amorphous materials
amorphization
X-ray diffraction
transmission electron microscopy
materiały amorficzne
amorfizacja
dyfrakcja rentgenowska
transmisyjna mikroskopia elektronowa
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Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:
https://bibliotekanauki.pl/articles/263952.pdf  Link otwiera się w nowym oknie
Opis:
The aim of the work is to study the ability and potential of glass formation in Ni-Fe-Cu-P alloys. A series of alloys were produced in arc furnace (i.e. Ni70Fe5Cu5P20, Ni60Fe10Cu10P20, Ni50Fe15Cu15P20, Ni40Fe20Cu20P20, Ni30Fe25Cu25P20, Ni20Fe30Cu30P20). The primary microstructure of the ingots was studied. The ribbons in as-melt-spun state were characterized by X-ray diffraction (XRD). The Ni70Fe5Cu5P2, Ni60Fe10Cu10P20 melt-spun alloys were found to be amorphous. For higher copper and iron concentrations a crystalline structure was obtained after melt spinning. This correlated with the tendency for the formation of the Fe-based phases enriched in P and Cu-based poorly alloyed phases which resulted in the formation of crystalline microstructure in melt-spun ribbons. For higher concentration of Fe and Cu, microstructures of the alloys contained constituents resultant from a tendency for separation in the liquid state. It is observed that the formation of the crystal line melt-spun ribbons is caused by the attraction of phosphorus by iron and the formation of copper-based fcc phase.
Celem pracy było zbadanie podatności na zeszklenie oraz możliwości wytworzenia struktury szklistej w stopach wieloskładnikowych Ni-Fe-Cu-P. W piecu łukowym wytworzono serię stopów (tzn.: Ni70Fe5Cu5P20, Ni60Fe10Cu10P20, Ni50Fe15Cu15P20, Ni40Fe20Cu20P20, Ni30Fe25Cu25P20, Ni20Fe30Cu30P20). Badano strukturę pierwotną wlewków. Taśmy w stanie po odlewaniu na wirujący bęben badano za pomocą dyfrakcji rentgenowskiej. Stwierdzono, że stopy Ni70Fe5Cu5P20, Ni60Fe10Cu10P20 odlewane na wirujący bęben były amorficzne. Dla stopów o wyższych zawartościach miedzi i żelaza po odlewaniu na wirujący walec otrzymano strukturę krystaliczną. Fakt ten można powiązać z tendencją do tworzenia faz na osnowie żelaza wzbogaconych w fosfor oraz zubożonych w pozostałe składniki stopowe faz na osnowie miedzi,które przyczyniły się do tworzenia w odlewanych taśmach mikrostruktury krystalicznej. Dla wyższych zawartości żelaza i miedzi, mikrostruktury stopów zawierały składniki fazowe powstające w efekcie tendencji stopów do podziału fazowego w stanie ciekłym. Zaobserwowano, że tworze nie krystalicznych taśm jest spowodowane przez przyciąganie fosforu przez żelazo oraz tworzenie bogatej w miedź fazy o strukturze regularnej ściennie centrowanej.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical properties of Ni-Fe-Cu-P-B alloy produced by two component melt spinning (TCMS)
Autorzy:
Wojciechowska, M.
Ziewiec, K.
Kąc, S.
Prusik, K.
Tematy:
metallic glasses
scanning electron microscopy (SEM)
nanoindentation
transmission electron microscopy TEM
mechanical properties
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Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/351728.pdf  Link otwiera się w nowym oknie
Opis:
The aim of this work was to investigate the microstructure and mechanical properties of the two-component melt-spun (TCMS) alloy produced from Ni40Fe40B20 and Ni70Cu10P20 melts. The Ni40Fe40B20, Ni70Cu10P20, Ni55 Fe20 Cu5 P10 B10 alloys were arc-melted. Then the alloys were melt-spun in the two different ways i.e.: by casting from a single-chamber crucible and from the two-chamber crucible. All of the above mentioned alloys were processed in the first way and the Ni40Fe40B20 and Ni70Cu10P20 were simultaneously cast on the copper roller from the two-chamber crucible. The microstructure of the alloy was studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM) with energy dispersive spectrometry (EDS) and light microscopy. The mechanical properties were investigated using tensile testing and nanoindentation. The two-component melt-spun (TCMS) amorphous Ni55 Fe20 Cu5 P10 B10 alloy present hardness, tensile strength and Young modulus on the significantly higher level than for a single phase amorphous Ni55 Fe20 Cu5 P10 B10 alloy and slightly below the corresponding values for the Ni40Fe40B20.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of the Molybdenum Addition on the Mechanical Properties and Structure of the NiCoMnIn Alloys
Autorzy:
Prusik, K.
Matyja, E.
Wąsik, M.
Zubko, M.
Tematy:
MSMA
martensite
structure
NiCoMnIn
additions
shape memory
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Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/354337.pdf  Link otwiera się w nowym oknie
Opis:
In this paper, the influence of Mo addition on the structure and mechanical properties of the NiCoMnIn alloys have been studied. Series of polycrystalline NiCoMnIn alloys containing from 0 to 5 mas.% of Mo were produced by the arc melting technique. For the alloys containing Mo, two-phase microstructure was observed. Mo-rich precipitates were distributed randomly in the matrix. The relative volume fraction of the precipitates depends on the Mo content. The numbers of the Mo rich precipitates increases with the Mo contents. The structures of the phases were determined by the TEM. The mechanical properties of the alloys are strongly affected by Mo addition contents. Brittleness of the alloys increases with the Mo contents.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure of the Extruded and Thermally Treated $Ni_{54.3}Fe_{16.2}Ga_{29.5}$ Alloy
Autorzy:
Prusik, K.
Matyja, E.
Zubko, M.
Goryczka, T.
Tematy:
81.30.Kf
87.64.Ee
81.30.Mh
83.85.Hf
71.20.Lp
71.20.Be
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Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1398368.pdf  Link otwiera się w nowym oknie
Opis:
Hot extrusion process was applied to $Ni_{54.3}Fe_{16.2}Ga_{29.5}$ polycrystalline alloy. Then the rod was annealed subsequently for 1 h at 700, 800, 900, and 1100°C. In this paper the effect of annealing on the microstructure of the polycrystalline extruded Ni-Fe-Ga alloy were analyzed. The structure of the alloys was determined by the X-ray and transmission electron microscopy. The electron backscattering diffraction technique was applied to obtain the texture of the extruded rods after heat treatment.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of $Tb(Ni_{1-x}Fe_{x})_{3}$ (x=0.2, 0.6) Crystalline Compounds and Powders
Autorzy:
Ociepka, K.
Bajorek, A.
Chrobak, A.
Chełkowska, G.
Prusik, K.
Tematy:
81.20.Wk
81.07.Bc
71.20.Lp
75.30.-m
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Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1367903.pdf  Link otwiera się w nowym oknie
Opis:
In the paper we present and discuss magnetic properties of the $Tb(Ni_{1-x}Fe_{x})_{3}$ (x=0.2, 0.6) crystalline compounds and their ball-milled powders. The investigated samples are polycrystalline and crystallize in the rhombohedral $PuNi_{3}$ type of crystal structure. The Curie temperature of the material seems to be independent of particle size and is constant. The coercivity depends on the amount of iron dopant. The saturation magnetization decreases after mechanical grinding which is connected with the reduction in particle size. After 6 h milling time the SEM results show the presence of nanoflakes with thickness up to 100 nm or even smaller. Moreover, the pulverization leads to the observed decrease of magnetocaloric effect.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic hardening induced in RCo₅ (R = Y, Gd, Sm) by short HEBM
Autorzy:
Łopadczak, P.
Bajorek, A.
Prusik, K.
Zubko, M.
Chełkowska, G.
Tematy:
81.07.-b
81.07.Bc
75.50.Ww
75.60.-d
75.75.Cd
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1048324.pdf  Link otwiera się w nowym oknie
Opis:
The paper is focused on the magnetic and structural properties of RCo₅ (R = Y, Gd, Sm) intermetallics fabricated by high energy ball - milling (HEBM). The investigated samples were first produced by arc-melting as bulk materials and then were milled for 1h in dimethylformamide with balls to powder ratio 10:1. The influence of the HEBM parameters on the microstructure was investigated by a variety of complementary measurement methods. The Rietveld refinement was performed to estimate the dependence of crystallite size and microstrain on type of sample. The hysteresis loops were recorded by SQUID magnetometer at 2 K and 300 K and at magnetic field up to μ₀H=7 T. The impact of short HEBM process is visible as the enhancement of coercivity and simultaneous reduction of the saturation magnetization.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the boron addition on the structure of the Ni-Mn-Co-In alloys
Autorzy:
Prusik, K.
Matyja, E.
Zubko, M.
Kubisztal, M.
Chrobak, A.
Tematy:
71.20.Lp
71.20.Be
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1153865.pdf  Link otwiera się w nowym oknie
Opis:
Series of Ni_{45.5-x}Co_{4.5}Mn_{36.6}In_{13.4}B_{x} (at.%, x=0, 0.05, 0.1, 0.5, 1.0) polycrystalline magnetic shape memory alloys produced by the induction melting were examined in terms of the structure and transition temperatures. The structure of the alloys was determined by the X-ray diffraction and transmission electron microscopy. Scanning electron microscopy and electron backscattering diffraction techniques were applied to obtain the microstructure and texture of alloys. Boron addition promotes nucleation of the second Co-rich and In-poor phase as well as causes decrease of the martensitic transformation temperatures.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic properties and structure of the Ni-Co-Mn-In alloys with the boron addition
Autorzy:
Prusik, K.
Matyja, E.
Kubisztal, M.
Zubko, M.
Swadźba, R.
Tematy:
81.30.Kf
87.64.Ee
75.50.Ee
75.50.Gg
71.20.Be
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1055090.pdf  Link otwiera się w nowym oknie
Opis:
Series of Ni_{45.5-x}Co_{4.5}Mn_{36.6}In_{13.4}B_{x} (at.%, x=0, 0.05, 0.1, 0.5, 1.0) polycrystalline magnetic shape memory alloys were examined in terms of the magnetic properties, structure and transition temperatures. Depending on the boron concentration single or two phase alloys microstructures were observed. Additionally, the martensitic transformation temperatures decreases with the boron addition. Magnetic-field induced transformation occurs for the alloys with the boron addition up to 0.1 at.%. For alloys with 0.5 and 1.0 at.% of B transformation is hindered.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of high energy milling time on the Ti-50Ta biomedical alloy structure
Autorzy:
Matuła, I.
Dercz, G.
Zubko, M.
Prusik, K.
Pająk, L.
Tematy:
87.85.J-
81.05.Zx
81.07.Wx
81.20.Ev
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Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1153599.pdf  Link otwiera się w nowym oknie
Opis:
Nickel-free titanium alloys are a promising research direction in the field of biomedical materials. Current literature reports indicate that there is a possibility of using the Ti-Ta alloys in medicine since these alloys have had satisfactory results as far as biocompatibility, resistance to corrosion and mechanical properties are concerned, which is an important aspect while considering the use of this alloy for long-lasting bone implants. This article presents the results of a high-energy milling process with the use of Ti and Ta powders. The ball-milling process was carried out for various times, including 20, 40, 60, 80, and 100 h. The samples were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The research confirmed partial synthesis of the materials during the process of high energy ball milling.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Magnetic Characteristics of $Co_{1-δ}Zn_{δ}Fe_2O_4$ Ferrite Nanopowders
Autorzy:
Kubisztal, M.
Herok, I.
Karolus, M.
Prusik, K.
Haneczok, G.
Tematy:
75.47.Lx
75.50.Gg
75.50.Tt
75.75.-c
75.75.Cd
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1398315.pdf  Link otwiera się w nowym oknie
Opis:
In the present paper the $Co_{1-δ}Zn_{δ}Fe_2O_4$ (0 ≤ δ ≤ 1) ferrite nanopowders with a spinel type structure were synthesized using a chemical co-precipitation technique with constant flow rate $ν _{FR}$=120 cm³/min at three different reaction temperatures i.e. $T_r$ =50°C, 70°C and 90°C. Magnetic and structural characteristics of the obtained materials were investigated by means of X-ray diffraction method, transmission electron microscopy and vibrating sample magnetometer. In the course of studies hysteresis loops M(μ₀H) and the relations of magnetization $M_{7T}$ (determined at $\text{}_{μ0}H $=7 T), squareness ratio S and the Néel temperature $T_{N}$ versus Zn content were determined and discussed in detail. It was shown that for δ<0.6 the increase in reaction temperature $T_r$ results in a significant increase of the measured magnetic characteristics. In particular, in the case of $Co_{0.8}Zn_{0.2}Fe_2O_4$ ferrite nanopowder magnetization $M_{7T}$ reaches maximal value of about 80 emu/g.
Dostawca treści:
Biblioteka Nauki
Artykuł

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