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Tytuł:
A Study of Point Defects in the B2-Phase Region of the Fe-Al System by Mössbauer Spectroscopy
Autorzy:
Hanc, A.
Kansy, J.
Dercz, G.
Pająk, L.
Oleszak, D.
Mrzigod, J.
Powiązania:
https://bibliotekanauki.pl/articles/1811589.pdf
Data publikacji:
2008-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
61.72.J-
76.80.+y
Opis:
In this work, we employed the Mössbauer spectroscopy and X-ray powder diffraction in a study of point defect formation in intermetallic phases of the B2 structure of the Fe-Al system as a function of Al concentration. The results are compared with the concentrations of point defect determined from positron annihilation data. In the Mössbauer effect, two types of samples are investigated: Fe-Al alloys with few additives obtained by induction melting and Al-rich metallic powders produced by the self-decomposition method and intensive grinding of high energy in the electro-magneto-mechanical mill. We present the values of the $\text{}^{57}Fe$ isomer shift and quadrupole splitting for the components describing the point defect in the local environment of a Mössbauer nuclide. The concentration of the Fe vacancies and Fe atoms substituting Al (Fe-AS) are determined. The results showed that an increase in Al content causes an increase in vacancy and Fe-AS concentration.
Źródło:
Acta Physica Polonica A; 2008, 114, 6; 1555-1562
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alginate Biopolymer Coatings Obtained by Electrophoretic Deposition on Ti15Mo Alloy
Autorzy:
Szklarska, M.
Dercz, G.
Simka, W.
Dudek, K.
Starczewska, O.
Łężniak, M.
Łosiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/1360727.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.18.Fx
87.85.J-
82.35.Pq
87.15.rp
81.15.-z
Opis:
In this work, the electrophoretic deposition method has been developed for the fabrication of bioactive alginate coatings on the surface of Ti15Mo implant alloy. Thin ZnO film was deposited cataphoretically as the interlayer prior to anaphoretic deposition of alginate (Alg) which was performed from aqueous solution containing 1 g $dm^{- 3}$ of NaAlg at room temperature. The deposition voltage and time varied in the range 20-50 V and 30-120 min, respectively. The microstructure of Alg coatings was studied by scanning electron microscope, and the surface roughness was analysed using atomic force microscopy. Structure was studied by grazing incidence X-ray diffraction. Chemical composition and functional group were examined using energy dispersive spectrometry and attenuated total reflectance Fourier transform infrared spectroscopy methods, respectively. It was found that controlling the deposition conditions it is possible to obtain amorphous Alg coatings of variable thickness and porosity. Mechanism of electrophoretic deposition of bioactive Alg coatings on the Ti15Mo alloy surface was discussed.
Źródło:
Acta Physica Polonica A; 2014, 125, 4; 919-923
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of mechanical activation in synthesizing multiferroic Pb(Fe1/2Nb1/2)O3 powders
Wykorzystanie mechanicznej aktywacji do syntetyzowania multiferroikowych proszków Pb(Fe1/2Nb1/2)O3
Autorzy:
Bochenek, D.
Dercz, G.
Oleszak, D.
Powiązania:
https://bibliotekanauki.pl/articles/352621.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aktywacja mechaniczna
multiferroics
PFN
spektroskopia Mössbauera
mechanical activation
PFN ceramics
Mössbauer spectra
Opis:
In the study, the method of high-energy powder milling - mechanical activation (MA) was used for synthesizing Pb(Fe1/2Nb1/2)O3 (PFN) powders. For the purpose of comparing the influence of high-energy milling on PFN synthesis, two groups of powder samples were used. The first mixture consisting of simple oxide powders; the second one consisting of compound oxide powders. The obtained powders were subjected to structural analysis with the use of XRD and Mőssbauer spectroscopy. Tests revealed that during the process of high-energy milling of initial constituents a partial synthesis of PFN material phases occurs. By comparing the two methods of PFN synthesizing it may be stated that mechanical activation in the case of a simple oxide mixture (PFN1) is equally effective as for a compound oxide mixture (PFN2).
W pracy, w procesie technologicznym, wykorzystano metodę wysokoenergetycznego mielenia proszków – mechanicznej aktywacji (MA) do syntezowania proszków Pb(Fe1/2Nb1/2)O3 (PFN). Do porównania wpływu wysokoenergetycznego mielenia na synteze PFN wykorzystano dwie grupy próbek proszkowych. Pierwsza mieszanine stanowiły proszki prostych tlenków (jednoetapowa metoda otrzymywania – PFN1), druga stanowiły proszki złozonych tlenków (dwuetapowa metoda otrzymywania – PFN2). Otrzymane proszki poddano analizie strukturalnej przy użyciu XRD i spektroskopii Mossbauera. Badania potwierdziły, ze podczas procesu wysokoenergetycznego mielenia składników wyjsciowych zachodzi czesciowa synteza faz materiału PFN. Porównujac dwie metody syntetyzowania PFN można stwierdzić, że mechaniczna aktywacja jest jednakowo skuteczna w przypadku mieszaniny prostych tlenków (PFN1) jak i dla mieszaniny złożonych tlenków (PFN2).
Źródło:
Archives of Metallurgy and Materials; 2011, 56, 4; 1015-1015
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioactive coatings obtained by electrophoretic deposition on Ti15Mo alloy
Autorzy:
Szklarska, M.
Dercz, G.
Łosiewicz, B.
Stróż, D.
Powiązania:
https://bibliotekanauki.pl/articles/283998.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomaterials
electrophoresis
implants
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 35
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioelectrochemical properties of Ti13Nb13Zr alloy before and after surface modification
Autorzy:
Stróż, A.
Luxbacher, T.
Łosiewicz, B.
Dercz, G.
Goryczka, T.
Powiązania:
https://bibliotekanauki.pl/articles/285758.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
titanium alloys
biocompatibility
surface modification
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 50
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Long-Term Corrosion Performance of Ti15Mo Alloy in Saline Solution
Autorzy:
Szklarska, M.
Łosiewicz, B.
Dercz, G.
Zubko, M.
Albrecht, R.
Stróż, D.
Powiązania:
https://bibliotekanauki.pl/articles/357034.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biomaterial
corrosion resistance
passivation
structure
titanium alloys
Opis:
The Ti15Mo alloy has been studied towards long-term corrosion performance in saline solution at 37°C using electrochemical impedance spectroscopy. The physical and chemical characterization of the material were also investigated. The as-received Ti15Mo alloy exhibits a single β-phase structure. The thickness of single-layer structured oxide presented on its surface is ~4 nm. Impedance measurements revealed that the Ti15Mo alloy is characterized by spontaneous passivation in the solution containing chloride ions and formation of a double-layer structured oxide composed of a dense interlayer being the barrier layer against corrosion and porous outer layer. The thi ckness of this oxide layer, estimated based on the impedance data increases up to ~6 nm during 78 days of exposure. The obs erved fall in value of the log|Z|f=0.01 Hz indicates a decrease in pitting corrosion resistance of Ti15Mo alloy in saline solution along with the immersion time. The detailed EIS study on the kinetics and mechanism of corrosion process and the capacitive behavior of the Ti15Mo electrode | passive layer | saline solution system was based on the concept of equivalent electrical circuit with respect to the physical meaning of the applied circuit elements. Potentiodynamic studies up to 9 V vs. SCE and SEM analysis show no presence of pitting corrosion what indicates that the Ti15Mo alloy is promising biomaterial to long-term medical applications.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 773-778
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of high energy ball milling on the structure and phase decomposition of the multiferroic Bi₅Ti₃FeO₁₅ ceramics
Autorzy:
Dercz, J.
Zubko, M.
Dercz, G.
Matuła, I.
Powiązania:
https://bibliotekanauki.pl/articles/1075760.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.85.+t
61.05.cp
68.37.Lp
81.20.Wk
Opis:
The paper presents the results of the Bi₅Ti₃FeO₁₅ multiferroic phase stability analysis during high-energy ball milling aimed at obtaining fine dispersion ceramic powder. The X-ray diffraction and transmission electron microscopy methods were used to analyse the structure and verify the degree of crystallite dispersion. Structural data analysis was carried out using the Rietveld method. To carry out the analysis of the morphology, the scanning electron microscopy was used. The results that were obtained showed that the high energy ball milling process results in the decomposition of the initial ceramics, where finally Bi₅Ti₃FeO₁₅ and Bi are obtained. An increase in the proportion of the amorphous phase and an increase in the dispersion of the grains and crystallites of the powder that occurs with an increase in the milling time were observed.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 852-855
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical formation of second generation TiO₂ nanotubes on Ti13Nb13Zr alloy for biomedical applications
Autorzy:
Stróż, A.
Dercz, G.
Chmiela, B.
Stróż, D.
Łosiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/1153606.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.85.jj
81.07.De
82.47.-a
Opis:
The aim of this study was to obtain the second generation TiO₂ nanotubes on the Ti13Nb13Zr alloy. Anodic oxidation of the alloy under study was carried out in 1 M (NH₄)₂SO₄ electrolyte under voltage-time conditions of 20 V for 120 min. The morphological parameters of the obtained nanotubes of second generation such as the length (L), internal (D_{i}) and outer (D_{o}) diameter of nanotube were determined. It was found that the anodic oxidation of the Ti13Nb13Zr alloy conducted under proposed conditions allowed to obtain the single-walled nanotubes of the following geometrical parameters: the internal diameter 61 nm, outer diameter 103 nm, and the length 3.9 μm. The total surface area of the single-walled nanotubes was equal to 4.1 μm², and the specific surface area per cm² (A_{s}) was estimated to be 15.6 cm²/cm². Formation mechanism, structure and optimal morphological parameters of the obtained single-walled nanotubes on the Ti13Nb13Zr alloy have been discussed in detail.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 1079-1080
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Formation of Self-Organized Nanotubular Oxide Layers on Ti13Zr13Nb Alloy for Biomedical Applications
Autorzy:
Smołka, A.
Rodak, K.
Dercz, G.
Dudek, K.
Łosiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/1361071.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.85.jj
81.07.De
87.85.J-
Opis:
In this work, the anodic formation of self-organized nanotubular oxide layers on Ti13Zr13Nb implant alloy was presented. Anodic oxidation was carried out at room temperature in [1 M] $(NH_4)_2SO_4$ solution with 1 wt% content of $NH_4F$. The voltage and time of anodization was 20 V for 120 min, respectively. Under proposed conditions, the best arrangement of nanopores was observed. The physical and chemical properties of the anodized surface of the Ti13Zr13Nb alloy were characterized using grazing incidence X-ray diffraction, scanning transmission electron microscopy, and atomic force microscopy. It was found that diameter of nanopores varied from 10 to 32 nm. Mechanism of the fabrication of the unique 3D tube-shaped nanostructure of $TiO_2$ on the surface of the Ti13Zr13Nb alloy by electrochemical anodization, has been discussed.
Źródło:
Acta Physica Polonica A; 2014, 125, 4; 932-935
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Corrosion Resistance of Nanotubular Oxide Layers on the Ti13Zr13Nb Alloy in Physiological Saline Solution
Ocena odporności korozyjnej nanotubularnych struktur tlenkowych na stopie Ti13Zr13Nb w środowisku płynów ustrojowych
Autorzy:
Smołka, A.
Dercz, G.
Rodak, K.
Łosiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/352023.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
anodization
corrosion resistance
self-organized nanotubes
Ti13Zr13Nb implant alloy
anodowanie
odporność na korozję
nanotubularna struktura
stop Ti13Zr13Nb
Opis:
Evaluation of corrosion resistance of the self-organized nanotubular oxide layers on the Ti13Zr13Nb alloy, has been carried out in 0.9% NaCl solution at the temperature of 37ºC. Anodization process of the tested alloy was conducted in a solution of 1M (NH4)2SO4 with the addition of 1 wt.% NH4F. The self-organized nanotubular oxide layers were obtained at the voltage of 20 V for the anodization time of 120 min. Investigations of surface morphology by scanning transmission electron microscopy (STEM ) revealed that as a result of the anodization under proposed conditions, the single-walled nanotubes (SWNTs) can be formed of diameters that range from 10 to 32 nm. Corrosion resistance studies of the obtained nanotubular oxide layers and pure Ti13Zr13Nb alloy were carried out using open circuit potential, anodic polarization curves, and electrochemical impedance spectroscopy (EIS) methods. It was found that surface modification by electrochemical formation of the selforganized nanotubular oxide layers increases the corrosion resistance of the Ti13Zr13Nb alloy in comparison with pure alloy.
Przeprowadzono badania oceny odporności korozyjnej nanotubularnych struktur tlenkowych na stopie Ti13Zr13Nb w środowisku płynów ustrojowych. Określono wpływ obecności nanotubularnych struktur tlenkowych na zmianę odporności korozyjnej stopu Ti13Zr13Nb. Proces anodowania elektrochemicznego prowadzono w roztworze 1M (NH4)2SO4 z 1 % dodatkiem NH4F. Samoorganizujące się warstwy nanorurek otrzymano przy napięciu 20 V i czasie anodowania 120 min. Badania morfologii powierzchni metodą skaningowej transmisyjnej mikroskopii elektronowej ujawniły, że w wyniku anodowania w zaproponowanych warunkach można otrzymać nanorurki o średnicy mieszczącej się w zakresie od 10 do 32 nm. Badania odporności korozyjnej nanotubularnych warstw tlenkowych oraz czystego stopu Ti13Zr13Nb przeprowadzono w 0,9 % roztworze soli fizjologicznej NaCl w temperaturze 37ºC z wykorzystaniem metody potencjału obwodu otwartego, krzywych polaryzacji anodowej oraz elektrochemicznej spektroskopii impedancji. Wykazano, iż modyfikacja powierzchni za pomocą formowania nanotubularnych struktur tlenkowych zwiększa odporność korozyjną stopu Ti13Zr13Nb w porównaniu do czystego stopu.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 4; 2681-2686
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
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.
Powiązania:
https://bibliotekanauki.pl/articles/1153599.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.85.J-
81.05.Zx
81.07.Wx
81.20.Ev
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.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 1033-1036
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure Analysis of Equiatomic Multi-Component Ni20Ti20Ta20Co20Cu20 Alloy
Autorzy:
Glowka, K.
Zubko, M.
Świec, P.
Prusik, K.
Dercz, G.
Stróż, D.
Powiązania:
https://bibliotekanauki.pl/articles/355419.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermodynamics
high entropy alloys
multi-component alloys
electron microscopy
microstructure
Opis:
An equiatomic multi-component alloy Ni20Ti20Ta20Co20Cu20 (at.%) was obtained using vacuum arc melting. In order to characterize such an alloy, microstructure analysis has been performed using Scanning and Transmission Electron Microscopy, Electron Backscattered Diffraction, X-ray Diffraction and Energy Dispersive X-ray Spectroscopy techniques. Microstructure analysis revealed the presence of one rhombohedral and two cubic phases. Energy Dispersive X-ray Spectroscopy measurements revealed that both observed phases include five chemical elements in the structure. Using Rietveld refinement approach the lattice parameters were refined for the observed phases.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 785-789
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure and Properties of YSZ Coatings Prepared by Plasma Spray Physical Vapor Deposition for Biomedical Application
Autorzy:
Barczyk, J.
Dercz, G.
Matuła, I.
Góral, M.
Maszybrocka, J.
Bochenek, D.
Gurdziel, W.
Powiązania:
https://bibliotekanauki.pl/articles/356455.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PS-PVD method
bioactive coatings
cp-Ti
YSZ
osseointegration
Opis:
This paper presents the study of microstructure and properties of 8 mol% yttrium stabilized zirconia coating fabricated by Plasma Spray Physical Vapor Deposition technique on commercial pure titanium. The coating was characterized by X-ray diffraction, high resolution scanning electron microscope, profilometer, nanoindentation and nanomachining tests. The X-ray phase analysis exhibit the tetragonal Zr0.935 Y0.065O1.968, TiO and α-Ti phases. The Rietveld refinement technique were indicated the changes of crystal structure of the produced coatings. The characteristic structure of columns were observed in High Resolutions Scanning Electron Microscopy. Moreover, the obtained coating had various development of surfaces, thickness was equal to 3.1(1) μm and roughness 0.40(7) μm. Furthermore, the production coatings did not show microcracks, delamination and crumbing. The performed experiment encourages carried out us to tests for osseointegration.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 779-783
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure Evolution of Ti/ZrO2 and Ti/Al2O3 Composites Prepared by Powder Metallurgy Method
Autorzy:
Dercz, G.
Matuła, I.
Gurdziel, W.
Kuczera, N.
Powiązania:
https://bibliotekanauki.pl/articles/353964.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
composite
Ti-ZrO2
Ti-Al2O3
high energy ball milling
Rietveld analysis
Opis:
The current study were performed in order to assess the fabrication possibility of the metal-ceramic composites based on nanocrystalline substrates. The influence of the variable time of the high energy ball-milling (10, 30 and 50 h) on the structure, pores morphology and microhardness of Ti/ZrO2 and Ti/Al2O3 compositions was studied. The X-ray diffraction analysis confirmed the composite formation for all milling times and sintering in the case of Ti/ZrO2 system. Decomposition of substrates during milling process of Ti/Al2O3 system was also observed. Additionally, the changes of lattice parameter as a function of milling time were studied. The morphology of powders and the microstructure of the sintered samples were observed by scanning electron microscopy (SEM). Also, analysis of microhardness and pores structure were performed.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 443-450
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure of Multi-Component Ni35Ti35Ta10Co10Cu10 Alloy
Autorzy:
Glowka, K.
Zubko, M.
Świec, P.
Prusik, K.
Dercz, G.
Matyja, E.
Stróż, D.
Powiązania:
https://bibliotekanauki.pl/articles/353190.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high entropy alloys
multi-component alloys
electron microscopy
microstructure
Opis:
A new NiTi-based multi-component Ni35 Ti35 Ta10 Co10 Cu10 (at.%) alloy was obtained by vacuum arc melting. The microstructure of the alloy has been studied using scanning and transmission electron microscopy, backscatter electron diffraction and X-ray diffraction techniques. The performed measurements showed presence of two cubic and one tetragonal phases. Energy dispersive X-ray spectroscopy analysis confirmed that all the observed phases contained all five principal elements.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 715-719
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł

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