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    Wyświetlanie 1-9 z 9
    Tytuł:
    Properties of flame-powder sprayed aluminum coatings reinforced with particles of carbonaceous materials
    Właściwości natryskiwanych płomieniowo proszkowo powłok aluminiowych wzmacnianych cząstkami materiałów węglowych
    Autorzy:
    Czupryński, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/115099.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    natryskiwanie płomieniowo-proszkowe
    powłoka aluminiowa
    nanorurka węglowa
    karburit
    odporność na ścieranie
    odporność na zużycie erozyjne
    flame-powder spraying
    aluminum coating
    carbon nanotube
    carburite
    abrasion resistance
    resistance to erosive wear
    Opis:
    The article presents the results of research on tribological properties of aluminum coatings, reinforced with particles of carbon nanotubes Nanocyl NC 7000 in quantities of 0.5 wt.% and 1 wt.% as well as carburite (elemental carbon) in an amount of 0.5 wt.%, flame-powder sprayed on a non-alloy structural steel grade S235J0 according to EN 10027-1. The coating properties were assessed based on macro and microscopic metallographic examinations, chemical composition tests, microhardness measurements and abrasion and erosive wear resistance tests. The obtained results were compared with the results obtained for samples with coatings made of aluminum powder - EN AW 1000 series.
    W artykule przedstawiono wyniki badań dotyczących właściwości tribologicznych powłok aluminiowych, wzmacnianych cząstkami materiałów węglowych w postaci nanorurek Nanocyl NC 7000 w ilości 0,5% wag. i 1% wag. oraz karburytu (węgla pierwiastkowego) w ilości 0,5% wag., natryskiwanych płomieniowo proszkowo (PFS) na podłoże z niestopowej stali konstrukcyjnej gatunku S235JO wg EN 10027-1. Oceny właściwości powłok dokonano w oparciu o badania metalograficzne makro- i mikroskopowe, badania składu chemicznego, pomiar twardości oraz badania odporności na zużycie ścierne i erozyjne. Otrzymane wyniki porównano z wynikami otrzymanymi dla próbek z powłokami wykonanymi proszkiem aluminium seria EN AW 1000.
    Źródło:
    Welding Technology Review; 2019, 91, 4; 17-30
    0033-2364
    2449-7959
    Pojawia się w:
    Welding Technology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanocomposite chromium coatings on aluminum alloys
    Autorzy:
    Gidikova, N.
    Valov, R.
    Petkov, V.
    Sułowski, M.
    Witkowska, M.
    Cempura, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/391428.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
    Tematy:
    chromium coating
    aluminum
    nanodiamond particles
    electrochemical plating
    Opis:
    Chromium coatings modified with nanodiamond particles were deposited on aluminum alloys. The concentration of the nanodiamond particles in the chrome plating electrolyte was from 5 to 25 g/l. The thickness of the layer varied between 30 and 70 μm. The layers were prepared with the same electrolytic conditions and were measured with a metallographic microscope. The maximum microhardness of the coating was 840 kg/mm2. X-ray diffraction analysis was performed with a Siemens D500 apparatus using the Bragg-Brentano technique. The distribution of Cr, Al and O in the cross section was studied by SEM-EDS. It was found that the layers were homogenous – only consisted of chromium. The coatings were also studied for non-destructivity by X-ray 3D computed tomography. It was found that the coatings were intact and continuous along the section. In order to obtain the maximum yield of chromium and maximum thickness of the layer, the optimum nanodiamond particle concentration was 10 g/l.
    Źródło:
    Prace Instytutu Odlewnictwa; 2017, 57, 4; 241-244
    1899-2439
    Pojawia się w:
    Prace Instytutu Odlewnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the thickness of Ni-P coating applied on 7075 aluminum alloy on its hardness
    Autorzy:
    Czapczyk, K.
    Siwak, P.
    Jabłoński, P.
    Furmański, Ł.
    Grobelny, P.
    Legutko, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/957945.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    aluminum alloy AW-7075
    Ni-P coating
    hardness
    Opis:
    The paper presents the results of hardness tests of aluminum alloy AW-7075 (for plastic processing) and Ni-P chemical coatings (nickel-phosphorus) which had been applied by the no-current method. Coatings of various thickness have been made and their influence on the increase of the top layer hardness has been determined, as well as the increase of the hardness of the coating and substrate system after puncturing the coating with an indenter. The purpose of the investigation was to determine the possibility of applying the Ni-P coating for selected technical applications, among others, by the selection of its optimum thickness on the hard aluminum alloy and by the determination of the deformation resistance of the top layer if the given coating.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 32; 53-58
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of multilayer coating of EN AW 6060 – T66 using friction surfacing
    Autorzy:
    Krall, Stephan
    Baumann, Christian
    Agiwal, Hemant
    Bleicher, Friedrich
    Pfefferkorn, Frank
    Powiązania:
    https://bibliotekanauki.pl/articles/2142351.pdf
    Data publikacji:
    2022
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    additive manufacturing
    friction surfacing
    aluminum-silicon alloy
    coating
    Opis:
    The objective of this research is to investigate observable process changes during multi-layer friction surfacing of EN AW 6060 aluminum, whether for repair, remanufacturing, or new part manufacturing. In this study, friction surfacing was performed with a 10-mm-diameter rod of EN AW 6060 aluminum at spindle speeds ranging from 1000 to 7000 rpm to create up to three layers of 40-mm-long deposits on a substrate of the same alloy. The process forces and layer temperatures were observed. Post-process measurement of flash geometry, layer geometry and microhardness were conducted with the motivation to understand the impact of multi-layer depositions on performance and identifying acceptable conditions required to achieve acceptable build quality. The thickness, deposition and joining efficiency of layers in the multilayer configuration remained consistent. Friction surfacing of EN AW 6060 aluminum allowed for high deposition rates of 9 kg/hr, when compared to other metal additive technologies.
    Źródło:
    Journal of Machine Engineering; 2022, 22, 3; 44--58
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Friction and Wear Properties of Plasma Sprayed YSZ/Ni-Cr-Al Coated 6063-T6 Aluminum Alloy
    Autorzy:
    Erzi, E.
    Dispinar, D.
    Yilmaz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/383089.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    mechanical properties
    abrasive wear
    plasma spraying
    YSZ coating
    stop aluminium
    właściwości mechaniczne
    zużycie ścierne
    natryskiwanie
    powłoka YSZ
    Opis:
    In this study T6 heat treated 6063 aluminum alloys were used as substrate material. In order to form a bond between the substrate and the main coating, all samples were coated with Ni-Cr-Al powders. 8 wt% Yttria Stabilized Zirconia powders (YSZ) were coated with plasma spray technique. Thickness of YSZ was 150 m and bond coating was 36 m. XRD and SEM-EDS analyses were performed to characterize the coating layers. These YSZ coated and uncoated samples were subjected to wear testing under different spindle speed, loading and working distance. Wear test results were compared with the kinetic friction coefficients and weight loss values. Wear marks on YSZ coated and uncoated samples were investigated by SEM analysis. By coating with plasma spray technique, the wear resistance of Al alloys was increased without changing the friction coefficient. It was found that spindle speed had significant effect over the wear properties than the load applied. By YSZ coating, wear properties were increased 10 times.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 168-174
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of oxide layers made on aluminum alloy 7075 by different methods
    Charakterystyka warstw tlenkowych wytworzonych na stopie aluminium 7075 z zastosowaniem różnych metod
    Autorzy:
    Jędrusik, M.
    Dębowska, A.
    Kopia, A.
    Petrzak, P.
    Koclęga, D.
    Kalemba-Rec, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/263954.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    oxide layers
    aluminum alloy 7075
    micro-arc oxidation
    phosphate coating
    chemical method
    warstwy tlenkowe
    stop aluminium 7075
    MAO
    fosforanowanie
    metoda chemiczna
    Opis:
    Aluminum and aluminum alloys are now being widely used as materials for structural applications due to a number of valuable properties. Improvement in the functional and decorative properties of aluminum can be obtained by forming an oxide layer on its surface. The aim of the present study was to produce and compare the properties of oxide layers on the surface of aluminum alloy 7075 and compare their properties. The methods that were used during the study were as follows: phosphating, micro-arc oxidation, and a chemical method involving the formation of a passive layer. The layers were subjected to corrosion tests. SEM and EDS methods were used for characterization of the received results. Also, some tests on an optical profilometer were done. It was proven that the micro-arc oxidation method allowed us to obtain a layer with the greatest thickness and highest corrosion resistance.
    Glin i jego stopy są obecnie powszechnie wykorzystywanym materiałem do zastosowań konstrukcyjnych ze względu stosunek masy do wytrzymałości. Poprawę własności funkcyjnych i dekoracyjnych aluminium uzyskać można przez wytworzenie warstwy tlenku na jego powierzchni. Celem badań było wytworzenie warstw tlenkowych na podłożu ze stopu aluminium 7075 i porównanie ich właściwości. Zastosowano trzy metody: fosforanowanie, micro-arc oxidation oraz metodę chemiczną polegającą na wytworzeniu warstwy pasywnej. Otrzymane powłoki poddano testom korozyjnym oraz charakteryzowano z zastosowaniem następujących metod: SEM, EDS. Wykonano też badania na profilometrze optycznym. Metoda micro-arc oxidation pozwala na uzyskanie warstwy o największej grubości oraz najlepszej odporności na korozję.
    Źródło:
    Metallurgy and Foundry Engineering; 2016, 42, 3; 187-193
    1230-2325
    2300-8377
    Pojawia się w:
    Metallurgy and Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aluminum Oxide Formation On Fecral Catalyst Support By Electro-Chemical Coating
    Powstawanie tlenku glinu na nośniku katalizatora FeCrAl przez osadzanie elektrochemiczne
    Autorzy:
    Yang, H. S.
    Jang, D. H.
    Lee, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/355942.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    FeCrAl
    catalyst support
    aluminum oxide formation
    PEO
    plasma electrolytic oxidation
    electrochemical coating
    nośnik katalizatora
    tlenek glinu
    plazmowe utlenianie elektrolityczne
    elektrochemiczne osadzanie
    Opis:
    FeCrAl is comprised essentially of Fe, Cr, Al and generally considered as metallic substrates for catalyst support because of its advantage in the high-temperature corrosion resistance, high mechanical strength, and ductility. Oxidation film and its adhesion on FeCrAl surface with aluminum are important for catalyst life. Therefore various appropriate surface treatments such as thermal oxidation, Sol, PVD, CVD has studied. In this research, PEO (plasma electrolytic oxidation) process was applied to form the aluminum oxide on FeCrAl surface, and the formed oxide particle according to process conditions such as electric energy and oxidation time were investigated. Microstructure and aluminum oxide particle on FeCrAl surface after PEO process was observed by FE-SEM and EDS with element mapping analysis. The study presents possibility of aluminum oxide formation by electro-chemical coating process without any pretreatment of FeCrAl.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1503-1506
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Analysis of Molding and Modification of the Ceramic Surfaces and Its Impact on the Roughness of Castings
    Autorzy:
    Jesiotr, M.
    Myszka, D.
    Trzaskowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/947458.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nickel coating
    roughness of casting surface
    aluminum alloys
    ceramic mold
    polymer materials
    powłoka niklowa
    chropowatość powierzchni
    stopy aluminium
    formy ceramiczne
    materiały polimerowe
    Opis:
    The article presents an analysis of changes in the outer surface of the casting made in a modified ceramic form. The introduction of the modification in the inner surface of the form, as a metallic coating was intended to produce a high quality of the casting surface. To describe the results, the three parameters have been chosen to characterize the surface roughness, i.e. Ra, Rz and Rq. In implementing the popular method of casting was used, so – called the lost polymer models. The models made from different plastic materials are chemically and electrochemically coated with a layer of nickel. The next step was to remove the model from the form and pouring the liquid metal over it. The observation of the casting surface was performed by using the scanning electron microscope and a profilometer. As a result of these attempts a number of castings have been obtained with an outside layer generated of lower roughness than the casting made in the normal gypsum form. The proposed method can be called an innovative one because it reduces the technological cycle by one processing operation of investment casting. During the process of casting both the cast and the outer layer improving the properties of the manufactured product is being produced.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 47-50
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics and Properties of Chromium Coatings with Diamond Nanoparticles Deposited Directly on Aluminum Alloys
    Autorzy:
    Petkov, V.
    Valov, R.
    Simeonova, S.
    Kandeva, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841064.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chromium coating
    aluminum alloy
    diamond nanoparticles
    atomic force microscopy
    wear resistance
    powłoka chromowa
    stop aluminium
    nanocząsteczki diamentu
    mikroskopia sił atomowych
    odporność na zużycie
    Opis:
    The objective of this study was to deposit directly chromium with diamond nanoparticles (ND) on aluminum alloys and investigate the coating surface. The chromium coatings on aluminum alloys were obtained by electrochemical deposition. The coatings were doped with ND. The diamond nanoparticles were obtained by detonation synthesis. Chromium coatings were deposited on aluminum alloys with a silicon content of 7 % and 10 %. The ND concentration in the electrolyte was 25 g/l. The surface analysis was performed by means of Atomic force microscopy. The surface of the coating of chromium with ND on Al10Si is twice more even than that on Al7Si. The microstructure and microhardness were examined with a metallographic microscope and a microhardness tester. The microhardness of the coated samples is 9163 MPa compared to 893 MPa of uncoated aluminum samples. The thickness of the chromium coatings doped with diamond nanoparticles is between 45 – 55 μm. The coatings are dense, continuous and uniform with good adhesion to the substrate material.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 4; 115-120
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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