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Wyszukujesz frazę "mikroskopia skaningowa elektronowa" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Analysis of the electrolytically polished skeletal dentures surfaces using various nano- and microscopic technologies
Autorzy:
Dąbrowa, Tomasz
Majstrzyk, Wojciech
Tamulewicz, Magdalena
Piasecki, Tomasz
Kunicki, Piotr
Więckiewicz, Włodzimierz
Gotszalk, Teodor
Powiązania:
https://bibliotekanauki.pl/articles/306706.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
chropowatość powierzchni
skaningowa mikroskopia elektronowa
proteza ruchoma
mikroskopia skaningowa
surface roughness
scanning electron microscopy
removable partial denture
scanning probe microscopy
optical profilometry
Opis:
The surface roughness of the dental restorations is significant to the denture plaque adhesion. Methods: In this work, we present the complex analysis of the electropolished CoCrW alloy remanium® star (Dentaurum, Germany) samples with laserengraved fiducial marks performed using complementary set of micro- and nanoscopic techniques: optical profilometry (OP), atomic force microscopy (AFM), scanning electron microscopy (SEM) and focused ion beam (FIB) milling. Results: Both mean and RMS roughness of the samples were reduced by electopolishing process, however, the results obtained using OP and AFM exhibited some discrepancies. This was caused by the relatively high local protruding defects developed on the processed surface. The cross-sections of the protrusions were made to analyze the cause of their formation as the EDS elemental content maps revealed that their composition was uniform. We also analyzed the local roughness in the smaller areas free from the defects. Conclusions: In that case, both OP and AFM techniques delivered the same results. Analysis of results showed that various methods used for the surface roughness evaluation have to be used simultaneously to obtain complete and true analysis of the technological CoCrW samples.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 4; 123-129
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of WO3 on the morphology and photodegradation of dimethyl phthalate of TiO2 nanotube array photoelectrode
Autorzy:
Xin, Y.
Wang, G.
Liu, Y.
Zang, Z.
Gao, M.
Powiązania:
https://bibliotekanauki.pl/articles/206886.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
degradation
esters
morphology
scanning electron microscopy
tungsten
water treatment
degradacja
estry
morfologia
skaningowa mikroskopia elektronowa
wolfram
oczyszczalnia ścieków
Opis:
WO3 modified TiO2 nanotube array (WO3/TNAs) photoelectrodes were fabricated via electrochemical deposition on TNAs/Ti photoelectrodes. The morphology and structure of WO3/TNAs photoelectrodes were investigated by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). The effects of deposition potential, deposition duration, NaWO4 concentration, and calcination temperature on the morphology and the photocatalytic activity were investigated. The results showed that suitable amounts of WO3 promoted the photocatalytic activity of TNAs photoelectrodes for the degradation of dimethyl phthalate (DMP). The optimal conditions for the fabrication of WO3/TNAs photoelectrodes were as follows: deposition voltage 3.0 V, 10 min deposition duration, 0.01 mol/dm3 Na2WO4 concentration, 1.5 cm electrode gap, and 550 °C annealing temperature. The degradation rate of DMP reached 77% after 60 min of illumination by WO3/TNAs photoelectrode. Additionally, WO3/TNA photoelectrodes possessed superb stability for maintaining a high DMP degradation efficiency at more than 75% after 10 times of successive use with 60 min irradiation for each cycle. The enhancement of photocatalytic performance by the efficient combination of WO3 with TNAs would provide a theoretical basis for the practical application of WO3/TNA photoelectrodes in water treatment.
Źródło:
Environment Protection Engineering; 2018, 44, 3; 129-139
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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