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Tytuł:
Effect of Annealing, Stoichiometry, and Surface on Magnetism of (Pr,Dy)FeCoB Microparticles Ensemble
Autorzy:
Kablov, E. N.
Ospennikova, O. G.
Kunitsyna, E. I.
Piskorskii, V. P.
Korolev, D. V.
Morgunov, R. B.
Powiązania:
https://bibliotekanauki.pl/articles/356579.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rare earth metals
magnets
magnetisation
Mössbauer spectroscopy
X-ray spectroscopy
Opis:
Magnetic properties of powder (Pr,Dy)FeCoB ferrimagnetic alloys and effects of annealing, surface states were analyzed. X-ray photoelectron spectroscopy and Mössbauer spectra of powders indicate the effect of surface states on phase composition and magnetic properties of the studied powder, if particles average size is smaller than 10 μm. Effect of stoichiometry on magnetic anisotropy was found. Thermal stability of anisotropy field was proved by replacement of Fe atoms with Co atoms.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1923-1930
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced microstructure diagnostics and interface analysis of modern materials by high-resolution analytical transmission electron microscopy
Autorzy:
Neumann, W.
Kirmse, H.
Hausler, I.
Mogilatenko, A.
Zheng, C.
Hetaba, W.
Powiązania:
https://bibliotekanauki.pl/articles/199872.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electron microscopy
energy dispersive X-ray spectroscopy
electron energy loss spectroscopy
electron holography
Opis:
Transmission electron microscopy (TEM) is a powerful diagnostic tool for the determination of structure/property relationships of materials. A comprehensive analysis of materials requires a combined use of a variety of complementary electron microscopical techniques of imaging, diffraction and spectroscopy at an atomic level of magnitude. The possibilities and limitations of quantitative TEM analysis will be demonstrated for interface studies of the following materials and materials systems: Nickel-based superalloy CMSX-10, (Zn,Cd)O/ZnO/Al2O3, (Al,Ga)N/AlN/Al2O3, GaN/LiAlO2 and FeCo-based nanocrystalline alloys.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 2; 237-253
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Investment Casting Technology from Bronze Age. Casting Workshop in Grzybiany (Southwest Poland)
Autorzy:
Garbacz-Klempka, A.
Suchy, J. S.
Kwak, Z.
Tokarski, T.
Klempka, R.
Stolarczyk, T.
Powiązania:
https://bibliotekanauki.pl/articles/352158.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
archeometallurgy
copper alloys
investment casting technology
lost wax casting
x-ray spectroscopy
Opis:
Investment casting technology that utilizes lost-wax casting is one of the most-important achievements of ancient society. In Lower Silesia, Poland (Grzybiany, Legnica county), a 7-6 BC casting workshop was discovered with numerous artifacts, confirming the existence of the manufacturing process of metal ornaments using ceramic molds. The paper presents the research of molds and casts from the Bronze and Early Iron Ages. Microscopic analyses of the casting molds were performed, along with radiographic and chemical composition tests of the artifacts (the latter employing the use of the X-ray fluorescence spectroscopy method). The clustering method was used for alloy classification. The microstructure was analyzed by means of Scanning Electron Microscopy with Energy Dispersive Spectroscopy. Conclusions from the research were utilized in further experiments.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 615-624
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Modification of Self-Consolidated Microporous Ti Implant Compacts Fabricated by Electro-Discharge-Sintering in Air
Autorzy:
Jo, Y. J.
Yoon, Y. H.
Kim, Y. H.
Chang, S. Y.
Kim, J. Y.
Lee, Y. K.
Van Tyne, C. J.
Lee, W. H.
Powiązania:
https://bibliotekanauki.pl/articles/356790.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
titanium
implant
porous
sintering
X-ray photoelectron spectroscopy (XPS)
Opis:
A single pulse of 0.75-2.0 kJ/0.7g of atomized spherical Ti powders from 300 mF capacitor was applied to produce a microporous Ti implant compact by electro-discharge-sintering (EDS). A solid core in the middle of the compact surrounded by a microporous layer was found. X-ray photoelectron spectroscopy was employed to study the surface characteristics of the EDS Ti compact and it revealed that Ti, C and O were the main constituents on the surface with a smaller amount of N. The surface was lightly oxidized and was primarily in the form of TiO2 resulting from the air oxidation during EDS processing. The lightly oxidized surface of the EDS compact also exhibited Ti nitrides such as TiN and TiON, which revealed that the reaction between air constituents and the Ti powders even in times as short as 128 msec.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1287-1291
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion Properties of Ca65-xMg17.5Zn17.5+x (x = 0, 2.5, 5) Alloys
Autorzy:
Babilas, R.
Wojciechowski, P.
Bajorek, A.
Sakiewicz, P.
Cesarz-Andraczke, K.
Powiązania:
https://bibliotekanauki.pl/articles/352466.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ca-based alloys
corrosion
hydrogen evolution
X-ray photoelectron spectroscopy
Opis:
The aim of the paper is to study the effect of zinc addition on the corrosion behavior of Ca65-xMg17.5Zn17.5+x(x = 0, 2.5, 5 at.%) alloys in simulated physiological fluids at 37°C. The electrochemical measurements allowed to determine a corrosion potential, which showed a positive shift from –1.60 V for Ca65Mg17.5Zn17.5 alloy to –1.58 V for Ca60Mg17.5Zn22.5 alloy, adequately. The more significant decrease of hydrogen evolution was noticed for Ca60Mg17.5Zn22.5 alloy (22.4 ml/cm2) than for Ca62.5Mg17.5Zn20 and Ca65Mg17.5Zn17.5 samples (29.9 ml/cm2 and 46.4 ml/cm2), consequently. The corrosion products after immersion tests in Ringer’s solution during 1 h were identified by X-ray diffraction and X-ray photoelectron spectroscopy as calcium, magnesium oxides, carbonates, hydroxides and calcium hydrate.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 1033-1040
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation, characterization and optimization of cross-linked fructosyltransferase aggregates for the production of prebiotic fructooligosaccharides
Autorzy:
Ademakinwa, A.N.
Ayinla, Z.A.
Omitogun, O.G.
Agboola, F.K.
Powiązania:
https://bibliotekanauki.pl/articles/81247.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fructosyltransferase
Aureobasidium pullulans
fructooligosaccharide
prebiotic
statistical optimization
scanning electron microscopy
X-ray spectroscopy
Fourier transform infrared spectroscopy
biotransformation
chemometric analysis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2018, 99, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of a Castings Quality and Metalworking Technology. Treasure of the Bronze Age Axes
Autorzy:
Garbacz-Klempka, A.
Kaczmarek, Ł.
Kwak, Z.
Kozana, J.
Piękoś, M.
Perek-Nowak, M.
Długosz, P.
Powiązania:
https://bibliotekanauki.pl/articles/382751.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-destructive testing
archeometallurgy
tin bronze
X-ray spectroscopy
castings defects
badania nieniszczące
archeometalurgia
brąz
spektroskopia rentgenowska
wady odlewów
Opis:
Cast axes are one of the most numerous categories of bronze products from earlier phases of the Bronze Age found in Poland. They had multiple applications since they were not only used objects such as tools or weapons but also played the prestigious and cult roles. Investigations of the selected axes from the bronze products treasure of the Bronze Age, found in the territory of Poland, are presented in the hereby paper. The holder of these findings is the State Archaeological Museum in Warsaw. Metallurgical investigations of axes with bushing were performed in respect of the casting technology and quality of obtained castings. Macroscopic observations allowed to document the remains of the gating system and to assess the range and kind of casting defects. Light microscopy revealed the microstructure character of these relicts. The chemical composition was determined by means of the X-ray fluorescence method with energy dispersion (ED-XRF) and by the scanning electron microscopy with X-ray energy dispersion analysis in micro-areas (SEM-EDS). The shape and dimensions of cores, reproducing inner parts of axes were identified on the basis of the X-ray tomography images. Studies reconstructed production technology of the mould with gating system, determined chemical composition of the applied alloys and casting structures as well as revealed the casting defects being the result of construction and usage of moulds and cores.
Źródło:
Archives of Foundry Engineering; 2018, 18, 3; 179-285
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Archaeometallurgical Investigations of the Early Iron Age Casting Workshop at Kamieniec. A Preliminary Study
Autorzy:
Garbacz-Klempka, A.
Kowalski, Ł.
Kozana, J.
Gackowski, J.
Perek-Nowak, M.
Szczepańska, G.
Piękoś, M.
Powiązania:
https://bibliotekanauki.pl/articles/383062.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-destructive testing
investment casting
X-ray fluorescence spectroscopy
archaeometallurgy
Lusatian culture
badania nieniszczące
odlewnictwo
promieniowanie rentgenowskie
kultura łużycka
Opis:
(Chełmno land, Poland) as it is reflected through casting workshop recovered during recent excavations. Among ready products, the ones giving evidence of local metallurgy (e.g. casting moulds and main runners) were also identified. With the shrinkage cavities and dendritic microstructures revealed, the artifacts prove the implementing a casting method by the Lusatian culture metalworkers. The elemental composition indicates application of two main types of bronzes: Cu-Sn and Cu-Pb. Aside these main alloying additions, some natural impurities such as silver, arsenic, antimony and nickel were found which may be attributed to the origin of the ore and casting technology. The collection from Kamieniec was described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X-ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint either local or non-local profile of the alloys, the ED-XRF data-set was statistically evaluated using a factor analysis (FA).
Źródło:
Archives of Foundry Engineering; 2016, 16, 3; 29-34
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multi-analytical approach for the analysis of cation distribution in a aluminoceladonite structure
Autorzy:
Kądziołka-Gaweł, Mariola
Dulski, Mateusz
Czaja, Maria
Krzykawski, Tomasz
Szubka, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2172615.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminoceladonite
ions position characterization isomorphic substitutions
Fe bearing phyllosilicates
X-ray photoelectron spectroscopy
Mössbauer spectroscopy
Raman spectroscopy
glinokrzemiany
krzemiany warstwowe
rentgenowska spektrometria fotoelektronów
XPS
spektroskopia mössabuerowska
spektroskopia Ramana
Opis:
In this paper cation arrangement in two samples of aluminoceladonite, emerald green and dark-green were studied by Mössbauer, Raman and X-ray photoelectron spectroscopies. The X-ray photoelectron spectroscopy (XPS) spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p, and O1s core levels provided information, for the first time highlighting a route to identify the position of Si, Al, K, and Fe cations in a structure of layered silicates. The XPS analysis showed the presence of Al in tetrahedral and octahedral coordination while the K2p line indicated the possibility of K+ substitution by other cations in interlayer sites. Mössbauer spectroscopy provided information about crystal chemistry with respect to the local electronic and geometric environment around the Fe atom and to distortions of the polyhedra. It turned out that iron was located mostly in the cis-octahedra position wherein about 75% of iron appeared in the form of Fe3+. The most preferred cation combinations around Fe corresponded to 3Fe3+ ions and MgFe2+Fe3+/2MgFe3+. Raman spectroscopy illustrated aluminium substitution in silicon and iron positions wherein the concentration of the aluminium determined the degree of structural distortion within the layered system. These isomorphic substitutions implied a typical band arrangement in the hydroxyl region, which has not been observed in celadonites so far.
Źródło:
Acta Geologica Polonica; 2022, 72, 3; 353--368
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wideband spectral emission measurements from laser-produced plasma EUV/SXR source based on a double gas puff target
Autorzy:
Arikkatt, Antony Jose
Wachulak, Przemysław
Fiedorowicz, Henryk
Bartnik, Andrzej
Czwartos, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1849155.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Plasma Spectroscopy
X-ray coherence tomography
soft X-ray
Opis:
We present spectral emission characteristics from laser-plasma EUV/SXR sources produced by irradiation of < 1 J energy laser pulse on eleven different double stream gas puff targets, with most intense electronic transitions identified in the spectral range from 1 nm to 70 nm wavelength which corresponds to photon energy from 18 eV to 1240 eV. The spectra were obtained using grazing incidence and transmission spectrographs from laser-produced plasma emission, formed by the interaction of a laser beam with a double stream gas puff target. Laser pulses with a duration of 4 ns and energy of 650 mJ were used for the experiment. We present the results obtained from three different spectrometers in the wavelength ranges of SXR (1-5.5 nm), SXR/EUV (4-15.5 nm), and EUV (10-70 nm). In this paper, detailed information about the source, gas targets under investigation, the experimental setup, spectral measurements and the results are presented and discussed. Such data may be useful for the identification of adequate spectral emissions from gasses in the EUV and SXR wavelength ranges dedicated to various experiments (i.e. broadband emission for the X-ray coherence tomography XCT) or may be used for verification of magnetohydrodynamic plasma codes.
Źródło:
Metrology and Measurement Systems; 2020, 27, 4; 701-719
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bronze Jewellery from the Early Iron Age urn-field in Mała Kępa. An approach to casting technology
Autorzy:
Garbacz-Klempka, A.
Kowalski, Ł.
Gackowski, J.
Perek-Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/379760.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bronze jewellery
non-destructive testing
investment casting
X-ray fluorescence spectroscopy
archaeometallurgy
Lusatian culture
biżuteria z brązu
badania nieniszczące
odlewnictwo
spektroskopia rentgenowska
archeometalurgia
kultura łużycka
Opis:
This study characterizes the bronze jewellery recovered from the Lusatian culture urn-field in Mała Kępa (Chełmno land, Poland). Among many common ornaments (e.g. necklaces, rings, pins) the ones giving evidence of a steppe-styled inspiration (nail earrings) were also identified. With the dendritic microstructures revealed, the nail earrings prove the implementing of a lost-wax casting method, whereas some of the castings were further subjected to metalworking. The elemental composition indicates the application of two main types of bronze alloys: Cu-Sn and Cu-Sn-Pb. It has been established that the Lusatian metalworkers were familiar with re-melting the scrap bronze and made themselves capable of roasting the sulphide-rich ores. The collection from Mała Kępa has been described in terms of its structure and composition. The investigations were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF), scanning electron microscopy (SEM) coupled with an energy dispersive X - ray analysis system (EDS) and optical microscopy (OM). In order to fingerprint an alloy profile of the castings with a special emphasis on the nail earrings, the data-set (ED-XRF, EDS) was statistically evaluated using multidimensional analyses (FA, DA).
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 175-183
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Analysis of Foundry Engineering of Copper Alloys Based on the Research of a Metallurgist Settlement in Szczepidło
Autorzy:
Garbacz-Klempka, A.
Makarowicz, P.
Tokarski, T.
Powiązania:
https://bibliotekanauki.pl/articles/382112.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-destructive testing
archaeometallurgy
bronze age workshop
investment casting
copper alloys
X-ray fluorescence spectroscopy
badania nieniszczące
archeometria
epoka brązu
odlewy
stopy miedzi
spektroskopia rentgenowska
Opis:
The article presents chosen aspects of foundry engineering of the settlement dwellers, including the archaeometric characteristics and metal science analysis of the artefacts, as well as an attempted reconstruction of the production organization. Discovered in Szczepidło (Greater Poland), the foundry workshop is unique in Central European Bronze Age. This workshop foundry operated roughly XIV-XII Century BC. Its production is evidenced by the presence of markers of the whole production cycle: semi-finished and finished products, production waste, fragments of crucibles and casting ladles with traces of usage, and tools. On this basis the alloys and foundry technologies used have been described. The analysis of foundry technology of copper alloys in the settlement area was carried out by observing the surface and structure of the products, semi-finished artefacts and fragments of crucibles by applying optical microscopy (OM), confocal microscopy (CLSM) and X-ray radiography (RT). The investigations of compositions were made by means of the energy dispersive X-ray fluorescence spectroscopy (ED-XRF) and scanning electron microscopy (SEM) coupled with an energy dispersive X-ray analysis system (EDS).
Źródło:
Archives of Foundry Engineering; 2017, 17, 1; 45-50
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical and electrochemical properties of AISI 316L stainless steel used for implants in human urinary system
Ocena własności fizykochemicznych i elektrochemicznych stali AISI 316L stosowanej na implanty w urologii
Autorzy:
Walke, W.
Przondziono, J.
Powiązania:
https://bibliotekanauki.pl/articles/351228.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AISI 316L stainless steel
electrochemical impedance spectroscopy (EIS)
X-ray photoelectron spectroscopy (XPS)
scanning electron microscopy (SEM)
austenityczna stal nierdzewna AISI 316L
elektrochemiczna spektroskopia impedancyjna EIS
rentgenowska spektroskopia fotoelektronów XPS
skaningowa mikroskopia elektronowa (SEM)
Opis:
The main purpose of this study was to evaluate physicochemical and electrochemical properties of AISI 316L stainless steel with modified surface, used for implants in human urinary system. In order to simulate conditions, which occur in the tissue environment of the urinary system, the test pieces were exposed in a urinary solution at temperature of T=37 ±1ºC, for a period of 30 days. Evaluation of physicochemical properties of biomaterial was made on the basis of surface chemical analysis (XPS). To evaluate the effects which occur on the surface of the examined steel, Electrochemical Impedance Spectroscopy (EIS) method was also employed. Analysis of test results shows favourable influence of the suggested surface treatment of AISI 316L stainless steel. Samples having electrolytically polished and chemically passivated surface featured the best physicochemical and electrochemical characteristics.
Podstawowym kryterium przydatności biomateriału metalowego na implanty urologiczne (stenty urologiczne) jest biokompatybilność. Jest ona w głównej mierze związana z własnościami fizykochemicznymi powierzchni implantu, które powinny być dostosowane do cech środowiska tkanek układu moczowego człowieka. W celu poprawy biokompatybilności stali Cr-Ni-Mo ustalono warunki wytwarzania warstw pasywnych na jej powierzchni. Wytworzenie warstwy pasywnej obejmowało etap polerowania elektrolitycznego i pasywowania. Taki sposób obróbki powierzchniowej zapewnił chropowatość Ra < 0,16 μm wymaganą dla tego rodzaju implantów. W pracy tej szczególną uwagę skoncentrowano na analizie długotrwałego oddziaływania środowiska sztucznego moczu na własności fizykochemiczne wytypowanej stali. Zasadniczym celem pracy była ocena własnosci fizykochemicznych i elektrochemicznych stali AISI 316L o modyfikowanej powierzchni stosowanej na implanty w układzie moczowym człowieka. W celu zasymulowania warunków występujących w środowisku tkankowym układu moczowego próbki poddawano ekspozycji w roztworze sztucznego moczu o temperaturze T=37±1ºC przez okres 30 dni. O przydatności zaproponowanej warstwy pasywnej do uszlachetniania powierzchni stali w znacznym stopniu decyduje jej skład chemiczny. Dlatego w pracy wykonano badania składu chemicznego metodą spektroskopii fotoelektronów (XPS), z użyciem wielofunkcyjnego spektrometru elektronów PHI 5700/660 firmy Physical Electronics, podczas których zidentyfikowano i wyznaczono stężenia atomowe pierwiastków w badanych warstwach pasywnych. Dla próbek przeprowadzono pomiar widma fotoelektronów w szerokim zakresie energii wiązania od 0÷1400 eV oraz dokładne pomiary linii widmowych poszczególnych pierwiastków składowych z warstwy powierzchniowej. Dla oceny zjawisk zachodzacych na powierzchni badanej stali zastosowano również metodę elektrochemicznej spektroskopii impedancyjnej (EIS). Pomiary przeprowadzono z wykorzystaniem systemu pomiarowego AutoLab PGSTAT 302N wyposażonego w moduł FRA2 (Frequency Response Analyser). Badania przeprowadzono w alternatywnym roztworze symulującym środowisko moczu człowieka. Zastosowana w pracy mikroskopia skaningowa pozwoliła na ocene stanu powierzchni stali AISI 316L przed i po ekspozycji w sztucznym moczu. Analiza wyników badań wskazuje na korzystny wpływ zaproponowanej obróbki powierzchniowej stali AISI 316L. Najkorzystniejszą charakterystykę fizykochemiczną i elektrochemiczną miały próbki o powierzchni polerowanej elektrolitycznie i pasywowanej chemicznie. Przeprowadzone w pracy badania stanowią podstawę do dalszych analiz związanych z zagadnieniem biokompatybilności stali Cr-Ni-Mo stosowanej na implanty w urologii.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 2; 625-630
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase Composition of Urban Soils by X-Ray Diffraction and Mössbauer Spectroscopy Analysis
Autorzy:
Kierlik, P.
Hanc-Kuczkowska, A.
Męczyński, R.
Matuła, I.
Dercz, G.
Powiązania:
https://bibliotekanauki.pl/articles/353120.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Mössbauer spectroscopy
X-ray diffraction
environmental protection
qualitative phase analysis
topsoil
Opis:
The main purpose of this study was to identify the mineral composition of soil sample taken from the upper layer of topsoil. High absorption of chemical substance is a characteristic for humus-organic layer of topsoil. The source of those substance could be a pollutant emitted to the atmosphere by human activity. The research area includes Upper Silesia region, which is the most industrial region of Poland. In the present study, the phase composition of the top soil separates were analyzed by using X-raydiffraction and Mössbauer spectroscopy. X-ray diffraction analysis revealed the presence of seven mineral phases in the material magnetic separated by lower current (quartz, illite, kaolinite, Fe3+ oxides, hematite, magnetite and pyrite). In case of higher current were identified four phases (quartz, muscovite, kaolinite and K0.94 Na0.06 (AlSi3 O8 )). Mössbauer spectroscopy was used for an extensive analysis of iron-containing phases (pyrrhotite, magnetite, aluminosilicate oxides with Fe3+ and kaolinite/Fe2+ silicate).
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 1029-1032
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Properties of Particles Emitted from Selected Coal-Fired Heating Plants and Electric Power Stations in Poland : Preliminary Results
Autorzy:
Pastuszka, J.S.
Konieczyński, J.
Talik, E.
Powiązania:
https://bibliotekanauki.pl/articles/205429.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
particulates emission
coal-fired power
heating station
surface chemical composition
X-ray
photoelectron spectroscopy
XPS
specific absorption
Opis:
The surface properties of particles emitted from six selected coal-fired power and heating plants in Poland have been studied in this work for the first time. Samples were collected beyond the control systems. Surface composition of the size-distributed particles was obtained by photoelectron spectroscopy (XPS). The reflection of the smallest, submicron particles was also measured to calculate their specific/mass absorption. The surface layer of the emitted particles was clearly dominated by oxygen, followed by silicon and carbon. The sum of the relative concentration of these elements was between 85.1% and 91.1% for coarse particles and 71.8–93.4% for fine/submicron particles. Aluminum was typically the fourth or fifth, or at least the sixth most common element. The mass absorption of the submicron particles emitted from the studied plants ranged from 0.02 m2g-1 to 0.03 m2g-1. Only specific absorption obtained for the “Nowy Wirek” heating plant was significantly higher than in other studied plants probably because the obsolete fire grate is used in this heating plant. The obtained results suggest that the power/heating-plant-emitted fine particles contain less carbonaceous material/elemental carbon on their surfaces than those that are typical in urban air.
Źródło:
Archives of Environmental Protection; 2014, 40, 3; 13-27
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 16

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