Wszystkie pola: CuO - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Correlation between Microstructure and Exothermic Reaction Kinetics of Al-CuO Thermite Nanocomposite Powders Fabricated by Cryomilling
Autorzy:: Oh, Minseok
Kim, Kwanil
Ahn, Byungmin
Powiązania:: https://bibliotekanauki.pl/articles/355529.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Al-CuO
thermite
nanocomposite
cryomilling
high energy density materials
Opis:: Al-CuO is a thermite material exhibiting the exothermic reaction only when aluminum melts. For wide spread of its applica-tion, the reaction temperature needs to be reduced in addition to the enhancement of total reaction energy. In the present study, a thermite nanocomposite with a large contact area between Al and CuO was fabricated in order to lower the exothermic reaction temperature and to improve the reactivity. A cryomilling process was performed to achieve the nanostructure, and the effect of composition on the microstructure and its reactivity was studied in detail. The microstructure was characterized using SEM and XRD, and the thermal property was analyzed using DSC. The results show that as the molar ratio between Al and CuO varies, the fraction of uniform nanocomposite structure was changed affecting the exothermic reaction characteristics.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 3; 931-934
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Laser-Assisted Copper Oxidation
Autorzy:: Musztyfaga-Staszuk, M.
Gawlińska-Nęcek, K.
Janicki, D.
Panek, P.
Powiązania:: https://bibliotekanauki.pl/articles/353054.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Cu
CuO
Cu2O
laser micro-processing
Opis:: The paper proposes a method for copper sheet oxidation by using a laser beam. The thickness of the oxide layer increases with temperature growth; therefore, the proper parameters of the experiment such as pulse power, frequency and the speed of the beam were adjusted. High power diode laser was used in the investigations. The topography of the oxidised copper sheets was determined using atomic force microscopy (AFM) and scanning electron microscopy with EDS analyses. Optical parameters of the deposited layer were characterised by spectrophotometry. Both roughness and thickness of the investigated samples were measured using the confocal laser scanning microscope. The technological recommendations for the laser micro-machining technology to obtain copper sheet oxidation by using the high power laser beam were selected.
Źródło:: Archives of Metallurgy and Materials; 2020, 65, 2; 767-770
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Study of CuO and V2O5 Effect on IR Spectra of Polycrystalline Bismuth Niobate
Autorzy:: Kuźniarska-Biernacka, I.
Lisińska-Czekaj, A.
Czekaj, D.
Powiązania:: https://bibliotekanauki.pl/articles/352587.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: BiNbO4
ceramics
SEM
FTIR spectroscopy
Opis:: Bismuth niobate (BiNbO₄) ceramics were fabricated by mixed oxide method and sintered by presureless sintering method. BiNbO₄ ceramics doped with V₂ O₅ additive in amount 0.125 wt%, 0.250 wt% and 1 wt% of was sintered at T = 910°C whereas BiNbO₄ ceramics doped with 2 wt% of CuO additive was sintered at T = 890°C and T = 910°C. It was found that V₂ O₅ additive improved morphology of the ceramic samples. However, the chemical composition of BiNbO₄ ceramics in relation to bismuth oxide and niobium oxide manifested a tendency of lack of Bi₂ O₃ component. Absorption bands for the BiNbO₄ compound were identified. FTIR band positions associated with NbO₆ octahedra suggested that the crystal structure changes after V₂ O₅ incorporation.
Źródło:: Archives of Metallurgy and Materials; 2020, 65, 2; 817-821
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

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