Temat: nickel coating - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Wettability and Hardness Investigation of Nickel-Coated Precipitated Calcium Carbonate Sn-9Zn Composite Solder
Autorzy:: Keong, L.W.
Zainal, Farah Farhana
Kasmuin, M.Z.
Mohamad, A.A.
Nazeri, Muhammad Firdaus Mohd
Nabiałek, Marcin
Jeż, Bartłomiej
Tematy:: lead-free solder
composite solder
Sn-9Zn
precipitated calcium carbonate
nickel coating; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:: https://bibliotekanauki.pl/articles/59110712.pdf Link otwiera się w nowym oknie
Opis:: To fabricate a lead-free solder with better properties, a surface-modified precipitate calcium carbonate (PCC) was added as a reinforcement phase to tin-zinc (Sn-9Zn) solder. The surface modification of PCC was done by using electroless plating to deposit nickel (Ni) layer on the PCC. Based on microstructure analysis, a thin layer of Ni was detected on the reinforcement particle, indicating the Ni-coated PCC was successfully formed. Next, composite solder of Sn-9Zn-xNi-coated PCC (x = 0, 0.25, 0.50, 1.00 wt.%) was prepared. The morphology and phase changes of the composite solder were evaluated by using optical microscope and X-ray diffraction (XRD). Significant refinement on the grain size of Zn was seen with the additions of Ni-coated PCC, with a new phase of Ni3Sn4 was detected along with the phases of Sn and Zn. The wettability of Sn-9Zn was also improved with the presence of Ni-coated PCC, where the wetting angle decreased from 28.3° to 19.4-23.2°. Brinell hardness test revealed up to 27.9% increase in hardness for the composite solder than the pristine Sn-9Zn solder. This phenomenon contributed by the increased in dislocation resistance through Zener pinning effect and Zn grain refinement within the composite solder which enhanced the overall properties of the composite solder.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

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.
Tematy:: nickel coating
roughness of casting surface
aluminum alloys
ceramic mold
polymer materials
powłoka niklowa
chropowatość powierzchni
stopy aluminium
formy ceramiczne
materiały polimerowe; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/947458.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Właściwości powłok ochronnych z niklu i srebra
Properties of protective coatings made of nickel and silver
Autorzy:: Kolasik, M.
Tematy:: powłoka ochronna z niklu i srebra
protective coating made of nickel and silver; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Powiązania:: https://bibliotekanauki.pl/articles/186109.pdf Link otwiera się w nowym oknie
Opis:: W artykule przedstawiono wyniki badań styków łącznika, które zostały pokryte metodą galwanizacji powłokami ochronnymi ze srebra oraz niklu. Wyznaczono rezystancje przejścia i temperatury łączników w funkcji liczby cykli łączeniowych oraz wykorzystując metodę elektronowej mikroskopii skaningowej i mikroanalizy rentgenowskiej określono procentowy rozkład pierwiastków stanowiących skład chemiczny powierzchni w zależności od czasu eksploatacji.
The paper presents the results of tests of switch contacts with protective coatings made of nickel and silver coated by galvanic method. Contact resistance and temperatures of switches were determined as a function of switching cycles. A percentage distribution of elements included in chemical composition of a contact surface depending on a time of operation has been determined by means of electron scanning microscopy and X-ray microanalysis methods.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Laser heat treatment of nickel-based alloys – a review
Autorzy:: Kukliński, Mateusz
Szymański, Michał
Przestacki, Damian
Tematy:: nickel
laser
heat treatment
surface
coating; Pokaż więcej
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Powiązania:: https://bibliotekanauki.pl/articles/94176.pdf Link otwiera się w nowym oknie
Opis:: In this paper researches which focus on laser heat treatment of nickel-based alloys are reviewed. Studies published from 1970s until today are taken into consideration. Publications which focus on influence of laser thermal processing on surface layer condition both on solid materials and predeposited coatings are described. Laser technologies in which additional materials are delivered during the process are not considered. In order to focus on studies investigating microstructural changes resulting mainly from material remelting, laser shock processing is also disregarded.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Comparison of the properties of nickel coatings reinforced with dispersion SiC particles of micrometric, submicrometric and nanometric size deposited on the 5xxx series aluminium alloy
Porównanie właściwości powłok niklowych zbrojonych cząstkami SiC, o rozmiarach mikrometrycznych, submikrometrycznych i nanometrycznych osadzanych na stopie aluminium serii 5xxx
Autorzy:: Najder, A.
Nowak, M.
Bigaj, M.
Żelechowski, J.
Opyrchał, M.
Karaś, M
Tematy:: nickel coatings
Ni-SiC
composite coating
powłoki niklowe
powłoki kompozytowe; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/351027.pdf Link otwiera się w nowym oknie
Opis:: In this study, Ni-SiC composite coatings were electroplated on the 5xxx series aluminium alloy substrate. The effect of the quantity (25g/l i 50g/l) and the size (3 m, 0,41 m and 50nm) of SiC particles introduced into the bath as a dispersed phase on properties of the coatings was tested. The influence of these parameters on thickness, microhardness, surface structure, abrasion resistance and corrosion resistance of nickel composite coatings was determined.
W niniejszej pracy powłoki Ni-SiC, osadzano elektrolitycznie na stopie aluminium serii 5xxx. Przedstawiono wyniki badań dotyczące wpływu ilości (25g/l i 50g/l) oraz wielkości cząstek SiC (3 m, 0,41 m oraz 50nm), wprowadzanych do kąpieli niklowych jako faza zdyspergowana, na właściwości otrzymanej powłoki niklowej. Określono wpływ tych parametrów na grubość, mikrotwardość, strukturę powierzchni, odporność na ścieranie oraz odporność korozyjną otrzymanych kompozytowych powłok niklowych.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Fabrication of YSZ coatings on nickel-based alloys by anodic electrophoretic deposition
Autorzy:: Binxia, Yuan
Tianzhong, Chen
Yongzhi, Shang
Haibo, Xue
Min, Li
Tematy:: YSZ coating
anodic electrophoretic deposition
suspension solution
nickel-based alloys; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/2204142.pdf Link otwiera się w nowym oknie
Opis:: In the paper, YSZ coatings were prepared on nickel-based alloy substrates by anodic electrophoretic deposition. The YSZ suspension solution was obtained under stirring and ultrasonic treatment, in which the anhydrous ethanol and acetylacetone were used as the dispersion medium and ammonium polyacrylate was used as the dispersant of the suspension. The effects of different deposition voltage and deposition time on YSZ coating were investigated. Meantime, the microstructure of the coating surface was observed by metallographic microscope. It was found that the high-quality YSZ coating could be obtained by deposition at 60 V for 2–3 min. Finally, the effect of sintering temperature on coating quality was investigated by X-ray diffractometer and scanning electron microscopy. The results showed that the YSZ coating bonded closely with the substrate after sintering at 1200 °C, and the porosity of the YSZ coating increased after sintering.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Effect of Isothermal Treatment on Ni3Al Coatings Deposited by Air Plasma Spraying System
Autorzy:: Mehmood, K.
Rafiq, M. A.
Durrani, Y. A.
Khan, A. N.
Tematy:: air plasma spraying
Ni-20Al
residual stresses
intermetallic coating
nickel aluminide; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/354178.pdf Link otwiera się w nowym oknie
Opis:: Ni₃Al coatings were obtained on AISI 321 steel samples by air plasma spraying system. The behavior of heat treatment on intermetallic coatings were evaluated after exposure at various temperatures i.e. 500ºC to 800ºC. The stay time in this regard was varied from 10 to 100 hours. The coatings were then characterized by X-Ray diffraction analysis, optical and scanning electron microscopy, eddy current measurements and stress analysis. It was observed that the formation of NiO increases drastically with time and temperature. The hardness of the coating increases with the formation of NiO. It was noted that the residual stresses can be correlated with the formation of NiO. Further, the development of residual stresses can be monitored by a non-destructive technique i.e. eddy current method.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Influence of the Content of Nickel Powders on the Electromagnetic Properties of SingleLayer Coated Polyester-Cotton Plain Weave Fabric
Autorzy:: Zhao, Xiaoming
Wang, Ciyi
Xue, Huangyu
Han, Xiaohui
Liu, Yuanjun
Wydawca:: Sciendo
Cytata wydawnicza:: Liu, Yuanjun, et al. "Influence of the Content of Nickel Powders on the Electromagnetic Properties of SingleLayer Coated Polyester-Cotton Plain Weave Fabric" Fibres & Textiles in Eastern Europe, vol. 30, no. 5, Sciendo, 2022, pp. 47-52. https://doi.org/10.2478/ftee-2022-0043
Opis:: A coated composite was prepared on polyester-cotton plain weave fabric, using PU2540 polyurethane as the matrix. The influences of the content of nickel powders on the dielectric constant (the real and imaginary parts and loss tangent value), reflection loss and shielding effectiveness of single-layer coated composites were mainly investigated. The results showed that within the frequency range of 1–1000 MHz, the value of the real part of the dielectric constant of the coated composites was the largest, and the polarisation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 15–225 MHz, the value of the imaginary part of the dielectric constant of the coated composites was the largest and the loss ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 250–800 MHz, the loss tangent value of the dielectric constant of coated composites was the largest, and the attenuation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 1220–3000 MHz, the reflection loss value was the smallest when the content of nickel powders was 40%, and its absorption ability with regard to electromagnetic waves was the strongest. Within the frequency range of 760–3000 MHz, the shielding effectiveness of the coated composite was the largest when the content of nickel powders was 40%.
This work was supported by fundamental research funds for the central universities. In addition, the authors would like to acknowledge Project No. 202010058041and 202110058055.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 9.

Tytuł:: Influence of the Content of Nickel Powders on the Electromagnetic Properties of SingleLayer Coated Polyester-Cotton Plain Weave Fabric
Autorzy:: Liu, Yuanjun
Xue, Huangyu
Wang, Ciyi
Han, Xiaohui
Zhao, Xiaoming
Tematy:: nickel powder
coating
polyester fabric
cotton fabric
plain weave fabric
dielectric constant
reflection loss
shielding effectiveness; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/2200762.pdf Link otwiera się w nowym oknie
Opis:: A coated composite was prepared on polyester-cotton plain weave fabric, using PU2540 polyurethane as the matrix. The influences of the content of nickel powders on the dielectric constant (the real and imaginary parts and loss tangent value), reflection loss and shielding effectiveness of single-layer coated composites were mainly investigated. The results showed that within the frequency range of 1-1000 MHz, the value of the real part of the dielectric constant of the coated composites was the largest, and the polarisation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 15-225 MHz, the value of the imaginary part of the dielectric constant of the coated composites was the largest and the loss ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 250-800 MHz, the loss tangent value of the dielectric constant of coated composites was the largest, and the attenuation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 1220-3000 MHz, the reflection loss value was the smallest when the content of nickel powders was 40%, and its absorption ability with regard to electromagnetic waves was the strongest. Within the frequency range of 760-3000 MHz, the shielding effectiveness of the coated composite was the largest when the content of nickel powders was 40%.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Influence of Wave-Absorbing Functional Particles on the Electromagnetic Properties and Mechanical Properties of Coated Composites for Nickel Powders
Wpływ absorbujących fale cząstek funkcyjnych na właściwości elektromagnetyczne i mechaniczne kompozytów powlekanych żywicą poliuretanową zawierającą proszek niklu
Autorzy:: Liu, Yuanjun
Wang, Yi
Wu, Xiang
Zhang, Lulu
Niu, Jiarong
Tematy:: nickel powder
single-layer coating
electromagnetic shielding
dielectric properties
proszek niklowy
powłoka jednowarstwowa
ekranowanie elektromagnetyczne
właściwości dielektryczne; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/233612.pdf Link otwiera się w nowym oknie
Opis:: In this subject, a single-layer coated composite for nickel powders was prepared using PU2540 polyurethane as the matrix, nickel powder as the wave-absorbing functional particle, and coating technology on plain cotton fabric. The influence of wave-absorbing functional particles on the dielectric, shielding effectiveness and mechanical properties of the single-layer coated composite for nickel powders was mainly analysed and compared. Results showed that the real and imaginary parts and loss tangent of the dielectric constant were all the largest when the iron powder was mixed with the nickel powder, and its polarizing ability, loss ability and attenuation ability with respect to electromagnetic waves were all the maximum. When the graphene was mixed with the nickel powder, the shielding attenuation ability with respect to electromagnetic waves was the best.
W ramach pracy przygotowano jednowarstwowy kompozyt powlekany żywicą poliuretanową zawierającą proszek niklu. Do przygotowania kompozytów użyto poliuretanu PU2540 jako matrycy i proszku niklu jako absorbującej fale cząstki funkcjonalnej oraz zastosowano technologię powlekania na gładkiej tkaninie bawełnianej. Przeanalizowano i porównano głównie wpływ absorbujących fale funkcjonalnych cząstek na dielektryk, skuteczność ekranowania i właściwości mechaniczne jednowarstwowego powlekanego kompozytu. Wyniki pokazały, że rzeczywiste i urojone części oraz styczna strat stałej dielektrycznej były największe, gdy proszek żelaza został zmieszany z proszkiem niklu, a jego zdolność polaryzacyjna, zdolność do strat i zdolność tłumienia fal elektromagnetycznych były maksymalne. Gdy grafen został zmieszany z proszkiem niklu, zdolność tłumienia ekranowania fal elektromagnetycznych była najlepsza.
Dostawca treści:: Biblioteka Nauki

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