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    Wyświetlanie 1-16 z 16
    Tytuł:
    Microstructure and Properties of TiC/Ti Coatings Deposited by the Supersonic Cold Gas Spray Technique
    Autorzy:
    Kusiński, J.
    Kac, S.
    Kowalski, K.
    Dosta, S.
    Georgiou, E. P.
    Garcia-Forgas, J.
    Matteazzi, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/356608.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cold gas spraying
    Ti
    TiC
    CerMet coating
    SEM
    TEM
    wear resistance
    Opis:
    Nanostructured, biocompatible, TiC/Ti Supersonic Cold Gas Sprayed coatings were deposited onto a Ti6Al4V alloy and their microstructure, wear resistance and hardness were investigated. The starting nanostructured powder, containing a varied mixture of Ti and TiC particles, was produced by high energy ball milling. Scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction were used for structural and chemical analyses of powder particles and coatings. Coatings, 250-350 μm thick, preserving the nanostructure and chemical powder composition, with low porosity and relatively high hardness (~850 HV), were obtained. These nanostructured TiC/Ti coatings exhibited better tribological properties than commonly used biomedical benchmark materials, due to an appropriate balance of hard and soft nano-phases.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 2; 867-873
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of corrosion resistance of magnetron sputtered doped DLC coatings with use of salt spray technique
    Autorzy:
    Jastrzębski, K.
    Paradowska, J.
    Jastrzębska, A.
    Bociąga, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/286076.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    implants
    corrosion
    DLC coatings
    Źródło:
    Engineering of Biomaterials; 2016, 19, 138; 104
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical characteristics of Portulaca grandiflora-doped Cellulose using the spray pyrolysis technique
    Autorzy:
    Alaridhee, Tahseen
    Obeed, Mohammed T.
    Malk, Fatima H.
    Dhahi, Baheya A.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315701.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    green materials
    optical properties
    natural dye
    biopolymer
    spray pyrolysis technique
    Opis:
    Thin films were prepared based on cellulose polymer doped with different ratios of natural dye derived from Portulaca grandiflora concentrations. The polymer and natural dye were extracted from eco-friendly materials - the cell walls of millet husks and Portulaca grandiflora, respectively. The spray pyrolysis technique was applied to prepare thin film samples to control the film morphology and reduce the roughness of the surface. Optical microscope and Fourier transform infrared were used to analyse structural, morphological, and functional groups for all samples, respectively. The peak absorbance, extinction coefficient, optical bandgap, Urbach energy, and optical conductivity for the thin films were determined using ultraviolet-visible spectroscopy. The results show an enhancement in the optical characteristics when the natural cellulose is doped with a dye. Doping cellulose with 5% P. grandiflora has led to a considerable reduction in the energy bandgap (to 1.95 eV), compared to the sample doped with 1%.
    Źródło:
    Opto-Electronics Review; 2023, 31, 3; art. no. e146553
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Characterization of $(CdO)_{x}(ZnO)_{1 - x}$ Composite by Spray Pyrolysis Technique
    Autorzy:
    Elmaghraby, E.
    Kaid, M.
    Zaki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1207275.pdf
    Data publikacji:
    2014-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.+w
    Opis:
    Composite cadmium oxides-zinc oxides, $(CdO)_{x}(ZnO)_{1 - x}$, thin films are grown with variable composition, x, by non-conventional spray pyrolysis technique from two separate cavities. X-ray diffraction proves the formation of cadmium and zinc peroxides upon deposition. Further annealing in air causes a loss of crystallographic order in zinc oxide grains. Annealing does not affect the structure of cadmium peroxide. The optical constants are estimated by the Murmann exact equation from transmittance and reflectance in the wavelength range between 400 and 2400 nm and show normal dispersion. Highest luminescent yield is assigned for samples with composition x = 0.5. Annealing causes increase in luminescence yield of $(CdO)_{x}(ZnO)_{1 - x}$ films that could be explained in the framework of structural change.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 1; 82-86
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena przeżywalności biologicznych środków ochrony roślin: nicieni - Steinernema feltiae rozpraszanych za pomocą dyszy hydraulicznej
    Assessment of survivalness of plant protective biological agents: nematodes - Steinernema feltiae sprayed by means of hydraulic nozzle
    Autorzy:
    Chojnacki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/289536.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    technika opryskiwania
    biologiczny środek ochrony roślin
    nicienie
    mieszanie hydrauliczne
    spray technique
    biological pest control agent
    nematodes
    hydraulic mixing
    Opis:
    Przeprowadzono badania nad wpływem rozmiaru otworu dysz, wartości ciśnienia i krotności przepływu na przeżywalność zawartych w cieczy nicieni Steinernema feltiae, które są biologicznym środkiem ochrony roślin. Badania symulowały proces mieszania. Aby uniknąć zakłóceń wyników spowodowanych pracą pompy opryskiwacza, której wpływ na przeżywalność nicieni nie był znany, do wytworzenia ciśnienia cieczy użyto sprężonego powietrza. Ciecz przepływała przez dysze 25, 50 i 75 krotnie. Średnice otworów miały rozmiar 0,8 i 1,2 mm a przyjęte ciśnienia równe były 0,6 i 1,2 MPa. Stwierdzono wpływ ciśnienia i krotności przepływu na przeżywalność nicieni.
    Tests of the effect of nozzle hole size, pressure value and flow multiplicity on survivalness of nematodes Steinernema feltiae contained in liquid, which are plant protection biological agent, were carried out. The tests were a simulation of mixing process. In order to avoid disturbances of the results caused by operation of the spraying machine pump, the influence of which on nematodes survivalness was not known, for generating liquid pressure compressed air was used. The liquid was flowing through the nozzles 25, 50 and 75 times. The diameters of the holes were 0,8 and 1,2 mm and the applied pressure was 0,6 and 1,2 MPa. Influence of pressure and flow multiplicity on nematodes survivalness was determined.
    Źródło:
    Inżynieria Rolnicza; 2006, R. 10, nr 13(88), 13(88); 47-53
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface morphology, structural and optical properties of MgO films obtained by spray pyrolysis technique
    Autorzy:
    Diachenko, O.
    Opanasuyk, A.
    Kurbatov, D.
    Opanasuyk, N.
    Kononov, O.
    Nam, D.
    Cheong, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1157920.pdf
    Data publikacji:
    2016-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Dz
    81.15.Rs
    Opis:
    X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, UV-visible photometry, and photoluminescence measurements were used to investigate the surface morphology and structural and optical properties of MgO films. Magnesium oxide films deposited by the spray pyrolysis technique were studied. The substrate temperature was varied from T_{s} = 643 K to 693 K. Magnesium chloride hexahydrate (MgCl₂·6H₂O), dissolved in deionized water, was used as the precursor solution. It was established that the single phase films crystallize into a cubic structure with very fine crystallite size (about 2 nm). The optical band gaps of the samples were varied from 3.64 eV to 3.70 eV. Also, the films have a high level of transmittance of 90%. Photoluminescence spectra show the emission peaks at approximately 412 nm (3.00 eV) and 524 nm (2.38 eV). The peak with the energy of 3.00 eV is ascribed to holes trapped in magnesium ion vacancies acting as acceptors (F⁺ center). The broad emission peak at 524 nm is related to the presence of defects (F¯ centers) associated with oxygen ion vacancies.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 3; 805-810
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanostructured CdO thin films for LPG and CO2 gas sensor prepared by spray pyrolisis technique
    Autorzy:
    Bari, R. H.
    Patil, S. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/411726.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    spray pyrolysis techniques
    LPG
    CO2 sensor
    nanostructured CdO
    gas response
    Opis:
    Nanostructured CdO thin films were deposited by spray pyrolysis techniques at different spray deposition time on glass substrates. Nanostructured CdO thin films was prepared using 0.05 M of cadmium acetate dehydrate (CH3COO) 2Cd•2H2O) was dissolved in the deionised water. These thin films were annealing in air at temperatures 500 °C for 60 min. The thickness of the films, crystallite and grain size were observed to increase with the increase in spray deposition time. As prepared thin films were characterized using XRD, FE-SEM and EDAX. The XRD analysis shows that CdO films were cubic structured. The electrical and gas sensing properties of these films were investigated. Prepared nanostructure CdO thin films show LPG (S = 1600) and CO2 (S = 435) gas response at different operating temperature. Gas response, selectivity, response and recovery time of the sensor were measured and presented.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 18; 31-46
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    PHYSICOCHEMICAL CHARACTERISTICS OF FUROSEMIDE INCORPORATED EUDRAGIT MICROSPHERES FORMULATED BY SPRAY-DRYING
    Autorzy:
    Ostróżka-Cieślik, Aneta
    Sarecka-Hujar, Beata
    Jankowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/895521.pdf
    Data publikacji:
    2018-12-31
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    microspheres
    furosemide
    Eudragit L30 D-55
    spray drying technique
    Opis:
    Microspheres are one of the multicompartment drug delivery systems. The active substance is incorporated into a polymeric matrix. The aim of the study was to determine physicochemical properties of furosemide microspheres prepared with Eudragit L30 D-55 matrix and to analyse their stability and drug release. A test formulation at the drug-polymer ratio of 1:2 was used in the study. Furosemide was incorporated into the enteric matrix because it reduces gastric acid secretion and impairs gastric secretory functions. The optimum spray drying parameters were determined on the basis of preliminary tests: aspirator efficiency: 80%, Tin: 140°C, pump capacity: 10%. The designated Hausner ratio and Carr index indicate good flow properties of the obtained product. The stability tests show that the microspheres are physically stable under the applied storage conditions. Based on the analysis of furosemide release from microspheres, it has been found that it is a two-step process. In the first step, 28.68% of the active substance was released into a pH 1.2 buffer solution. In the second step, the remaining part of the active substance was released into a pH 6.8 buffer within 30 minutes.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1369-1376
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Properties of (SnO2)1-x(ZnO)x Thin Films Prepared by Spray Paralysis Technique
    Autorzy:
    Nahida, Bukhееt Hasan
    Zahra'a, Adеl Jawad
    Mohammed, Ahmed Mohammed
    Huda, Bukhееt Hasan
    Powiązania:
    https://bibliotekanauki.pl/articles/1179187.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    optical propеrtiеs
    spray pyrolysis tеchniquе
    thin films
    еnеrgy gap
    Opis:
    Thе study of thе optical propеrtiеs is usеful in thе task of dеtеrmining thе naturе of thе practical application that can bе usеd to rеcord film matеrial. Thе optical propеrtiеs of thе mixеd (SnO2)1−x(ZnO)x thin films dеpositеd on a glass substratе by spray pyrolysis tеchniquе (SPT) at a substratе tеmpеraturе 400 °C havе bееn invеstigatеd by thе transmission spеctra at room tеmpеraturе wеrе mеasurеd in thе rangе from 300 to 1100 nm.Thе optical study rеvеalеd that thе films wеrе highly absorbеd with a dirеct typе of transition. Also thе dirеct еnеrgy gap was obsеrvеd to incrеasе with incrеasing of ZnO Vol.%
    Źródło:
    World Scientific News; 2017, 83; 182-193
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural and Optical Properties of Fe2O3 - NiO mixed Thin Films Prepared by Chemical Spray Pyrolysis
    Autorzy:
    Mohmmed, N. J.
    Habubi, M. N.
    Powiązania:
    https://bibliotekanauki.pl/articles/412381.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Fe2O3
    spray pyrolysis technique
    structural properties
    optical properties
    Opis:
    Mixed Fe2O3 - NiO thin films have been prepared by chemical Spray pyrolysis technique onto glass substrate preheated to 450 °C. The thickness of thin films was found to be (400 ±20) nm. XRD measurements reveal that all the film exhibit polycrystalline hexagonal wrutzite with a preferred orientation along (104) plane for pure and 10 % and 20 % Ni, while for the rest the structure was amorphous. AFM analysis indicate a nanostructure for all the films. The optical energy gap was found to be increased from optical transitions seems to be direct and the optical energy gap seems to be increased from 2.5 to 2.69 eV as the percentage of NiO increase.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 65-85
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Substrate Temperature on Structural and Optical Properties of CdO Thin Films
    Autorzy:
    Ali, H. R. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411893.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    cadmium oxide
    spray pyrolysis technique
    XRD
    AFM
    thin films
    sol-gel
    Opis:
    Thin films of CdO have been prepared by spray pyrolysis technique. XRD analysis reveals that all the prepared samples were polycrystalline and have preferred orientation along [111] orientation. The surface topography was determined by AFM which indicate that surface roughness and rms roughness were increased by the increasing of substrate temperature. The optical energy gap were determined and its value lies between (2.4-2.5) eV.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 8; 47-55
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Boric Acid Content on the Structural and Optical Properties of MnS Films Prepared by Spray Pyrolysis Technique
    Autorzy:
    Bedır, M.
    Öztaş, M.
    Çelik, S.
    Özdemır, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205283.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.15.Rs
    78.28.-e
    61.72.Vv
    61.05.cp
    68.55.Jk
    Opis:
    Boron doped MnS films were obtained by the spray pyrolysis method using the boric acid ($H_3BO_3$) as dopant source at a substrate temperature of 350°C. The spray pyrolysis method has a wide range of application areas with a low cost well-suited for the manufacture of solar cells. The properties of boron doped MnS films were investigated as a function of doping concentration. The X-ray analysis showed that the films were polycrystalline fitting well with a hexagonal structure and have preferred orientation in the [002] direction. The optical band gap of the undoped and boron doped MnS films were found to vary from 3.38 to 3.20 eV. The changes observed in the energy band gap and structural properties of the films related to the boric acid concentration are discussed in detail.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 3; 840-844
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola techniki opryskiwania w ograniczaniu skażenia środowiska środkami ochrony roślin
    Spraying technique as a tool to reduce the contamination of environment by pesticides
    Autorzy:
    Hołownicki, R.
    Doruchowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/286705.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    środki ochrony roślin
    znoszenie cieczy
    technika opryskiwania
    strefa ochronna
    pesticides
    spray drift
    spraying technique
    buffer zone
    Opis:
    Skażenia punktowe i znoszenie cieczy są głównymi źródłami zanieczyszczenia środowiska środkami ochrony roślin. Skażenia punktowe mogą być skutecznie zredukowane przez właściwe postępowanie z pozostałością cieczy użytkowej oraz przez napełnianie i przechowywanie opryskiwaczy na stanowiskach biobed. Zanieczyszczenie wód powierzchniowych można ograniczyć dzięki mniejszemu znoszeniu i właściwie wyznaczonym strefom ochronnym. Polskie regulacje prawne nie zezwalają na stosowanie stref ochronnych o zredukowanej szerokości, pomimo że znoszenie nie jest jednakowe dla wszystkich technik opryskiwania i warunków wykonania zabiegów. Uzyskane wyniki badań wskazują na możliwość zastosowania węższych stref ochronnych dla Technik Ograniczających Znoszenie (TOZ). Przedstawiono wielkość redukcji znoszenia dla większości stosowanych w Polsce technik opryskiwania upraw polowych i sadowniczych. Mogą być one podstawą do ustanowienia oficjalnej procedury stosowania stref ochronnych o zredukowanej szerokości w zależności od warunków polowych i stosowanej techniki opryskiwania.
    The point sources and spray drift are most dangerous for soil and water pollution by pesticides. The point sources can be efficiently reduced by the proper disposing of the spray liquid residues and by filling the sprayers on biobeds. The contamination of surface water can be significantly decreased by the use of drift reducing equipment and by the properly adjusted buffer zones. Polish regulations do not allow to reduce buffer zones for spraying techniques and field situations reducing spray drift. The results of research on spray drift showed that the narrower buffer zones can be used for the Drift Reducing Equipment. The drift reduction values were presented for most of the field and fruit crop application techniques used in Poland. They can be used as a base for future official procedure of buffer zones adjustment by the farmers, depending on field situation and spraying technique.
    Źródło:
    Inżynieria Rolnicza; 2006, R. 10, nr 5(80), 5(80); 239-247
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation of SnO₂ Thin Film Nanostructure for CO Gas Sensor Using Ultrasonic Spray Pyrolysis and Chemical Bath Deposition Technique
    Autorzy:
    Yuliarto, B.
    Gumilar, G.
    Zulhendri, D.
    Nugraha, ---
    Septiani, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031984.pdf
    Data publikacji:
    2017-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.43.-h
    Opis:
    In recent years, research of metal oxide semiconductor-based sensors has focused on morphology modification of thin film structures. One of the promising materials that is being developed is SnO₂. In this research, nanostructured SnO₂ thin film was grown using the ultrasonic spray pyrolysis and chemical bath deposition methods with and without external magnet assistance (0.1 T). As precursor solution of the ultrasonic spray pyrolysis process, the SnCl₂·2H₂O is dissolved in distilled water, with pH varied by adding 37% HCl solution. The precursor solution for the chemical bath deposition process was SnCl₂·2H₂O, which is dissolved in urea solution with pH customized by adding the NaOH solution. All resulting nanostructured SnO₂ thin film samples were characterized by using X-ray diffraction and scanning electron microscopy techniques. The resulting morphologies of SnO₂, prepared by chemical bath deposition, using magnetic field, HMTA framework-assisted chemical bath deposition, and ultrasonic spray pyrolysis are spherical, cubic, and spherical, respectively. The sensor response pattern of nanostructured SnO₂ thin films, prepared by all tested methods, to 30 ppm CO, is similar in that the response increases with the increase of working temperature. The SnO₂ thin film prepared by ultrasonic spray pyrolysis method shows the greatest sensitivity value of 95.12%, with a response time of 216 seconds and a recovery time of 558 seconds, at working temperature of 300 degrees Celsius.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 3; 534-538
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stężenie biologicznych środków ochrony roślin w opryskiwaczach taczkowych
    Concentration of biological plant protection agents in wheelbarrow sprayers
    Autorzy:
    Chojnacki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/290208.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    opryskiwanie
    technika
    biologiczny środek ochrony roślin
    nicienie
    mieszanie hydrauliczne
    spray
    technique
    biological pest control agent
    nematodes
    hydraulic mixing
    Opis:
    Badano efektywność hydraulicznego systemu mieszania stosowanego w opryskiwaczu taczkowym poprzez pomiary stężenia w wodzie owadobójczych nicieni Heterohabditis bacteriophora. Badania wykonano przy ciśnieniach mieszania: 0.30/0.15, 0.70/0.40 i 1.30/0.75 MPa. Stwierdzono, że wzrost koncentracji nicieni pojawił się jedynie w końcowej fazie opróżniania opryskiwacza.
    Effectiveness of hydraulic agitation system of wheelbarrow sprayer was investigated by measuring the concentration of the insectivorous nematodes Heterohabditis bacteriophora in water mixture. The measurements were done at mixing pressure: 0.30/0.15, 0.70/0.40 and 1.30/0.75 MPa. It was found that the increase of the nematodes concentration was observed only at a final phase of emptying of the sprayer tank.
    Źródło:
    Inżynieria Rolnicza; 2008, R. 12, nr 1(99), 1(99); 77-82
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on optimizing spray parameters for Cr3C2 – NiCr coating created on alloy steel by plasma spraying technique
    Autorzy:
    Dang, Thao Xuan
    Son, Nguyen Hong
    Cuong, Pham Duc
    Powiązania:
    https://bibliotekanauki.pl/articles/2171770.pdf
    Data publikacji:
    2022
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    Cr3C2-NiCr
    plasma spraying
    coating
    optimization
    E355 alloy steel
    Opis:
    In this work, Cr3C2-NiCr ceramic coating with NiCr content of 30% was created on E355 (St 52-3)/1.0060 alloy steel substrate by air plasma thermal spraying (APS) method. The adhesion, tensile strength of the coating were studied in relation to spray parameters including current intensity, powder feed rate, and stand-off distance according to experimental planning. Experiments were designed based on Central Composite Design method. The adhesion and tensile strength of the coatings were measured by a tensile-compression machine. Analysis of variance (ANOVA) were used to build regression functions expressing the relationship between each property and spray parameters. The experimental results showed that those spray parameters significantly influence the properties of the coating. ANOVA results indicated that the spray parameters have different influences for each coating properties. In addition, regression model of the properties gives prediction results very close to experimental results. The optimization problem was solved in order to achieve the maximum value of adhesion and tensile strength of the coating. Values of the spray parameters for Cr3C2 – NiCr coating to achieve the above criteria have been determined and proposed in this study.
    Źródło:
    Journal of Machine Engineering; 2022, 22, 4; 43--53
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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