Autor: Gencer, A. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The utilization of Kiwi (Actinidia deliciosa) pruning waste for kraft paper production and the effect of the bark on paper properties
Autorzy:: Gencer, A.
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Powiązania:: https://bibliotekanauki.pl/articles/52898.pdf Link otwiera się w nowym oknie
Opis:: In this study, samples of pruning residuals from kiwi (Actinidia deliciosa) with and without bark were used in order to identify the negative impacts of the bark on pulp and paper production. The Kraft method was used to cook the samples, and six tests were conducted, three with bark and three without bark. In the six tests, the active alkaline/sulfide ratios, temperature, and time were stabilized at 18/22, 170°C and 170 min, respectively. Some of the physical, optical, and mechanical properties of the unbeaten papers produced at 35 SR° and 50 SR° were compared. For all of the mechanical properties that were measured, the bark had a negative effect. This could be explained by the high content of brittle inorganic material in the bark’s fibers.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fabrication and Transport Critical Current Densities of $MgB_2//Fe//Cu$ Multifilament Tapes without Any Intermediate Annealing
Autorzy:: Yucel, E.
Terzioglu, C.
Varilci, A.
Gencer, A.
Belenli, I.
Tematy:: 74.70.Ad
84.71.Mn
74.62.-c
74.25.Sv
74.25.F-; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1489874.pdf Link otwiera się w nowym oknie
Opis:: We have fabricated superconducting 6 and 7 filaments $MgB_2//Fe//Cu$ tapes by ex situ powder-in-tube method using Cu-sheath without any intermediate annealing. Properties of two different multicore $MgB_2//Fe//Cu$ tapes annealed at 900C for 2 h in high purity argon gas atmosphere were compared. The samples were characterized using scanning electron microscope, X-ray diffraction, electron dispersive spectroscopy, optical microscopy, critical transition temperature, transport critical current density, and magnetic measurements. Transport critical current densities of the 6 and 7 filaments tapes were found to be 450 A/cm^2 and 190 A/cm^2 at 20 K, respectively. From X-ray diffraction measurements, lattice parameters a and c were determined. From dc resistivity measurements, the connectivity between grains was investigated by using Rowell's connectivity analysis.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of sodium ascorbate on weathering performance of NaOH pulping and paper
Autorzy:: Gencer, A.
Onat, S.M.
Can, A.
Ozgul, U.
Sivrikaya, H.
Yurdakurban, F.
Tematy:: sodium ascorbate
weathering
performance
pulping
paper; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Powiązania:: https://bibliotekanauki.pl/articles/52409.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Micro Arc Oxidation of Al-4Si, Al-4Mn and Al-4Mg Binary Alloys
Autorzy:: Oter, Z.
Gulec, A.
Gencer, Y.
Tarakci, M.
Tematy:: 81.15.-z
81.05.Bx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1401370.pdf Link otwiera się w nowym oknie
Opis:: Binary synthetic aluminum alloys Al-M (M = Mg, Mn, Si) containing 4 at.% alloying elements as substrate materials were prepared under controlled vacuum/argon atmosphere. The substrates were coated by micro arc oxidation (MAO) method for 120 minutes in aqueous alkaline electrolyte using the same electrical parameters. The phase constituents, chemical composition, surface roughness and the microstructure of the coatings were characterized by XRD, profilometry and SEM-EDS. The average coating thicknesses are 127 μm, 91 μm and 78 μm on Al-4Mn, Al-4Mg and Al-4Si alloys, respectively. All MAO coatings were composed of mullite (3Al₂O₃·2SiO₂) and γ-Al₂O₃ phases. In addition to these phases, α-Al₂O₃ phase, in the form of precipitates, was detected in coatings on Al-4Mn and Al-4Mg alloys. The presence of Si, Mn and Mg was detected in the coatings, depending of the chemical content of the substrate alloys.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Boriding of Equiatomic Fe-Mn Binary Alloy
Autorzy:: Calik, A.
Gencer, Y.
Tarakci, M.
Gunduz, K.
Gulec, A.
Tematy:: 81.15.-z
81.05.Bx
68.35.Fx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1400031.pdf Link otwiera się w nowym oknie
Opis:: Synthetic equiatomic Fe-Mn binary alloy was prepared under vacuum-argon controlled atmosphere. Fe-Mn alloy samples were boronized using the commercial Ekabor II powder at 900°C, 1000C and 1100C for 3 h. The borided samples were characterized by X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy, and profilometry. The boride layers were composed of $FeB$, $MnB$, $MnB_2$ and $Fe_2B$ phases for the samples borided at 1000C and 1100C while the sample borided at 900C was composed of only FeB and MnB. The boride layer was well adhered to the substrate with saw-tooth like morphology however some discontinuous band of cracks were observed in the boride layer. The concentration ratio of Fe and Mn were equal along the thickness of the coating though in some areas their ratio interchanged. The boride layer thickness and surface roughness increased with boronizing temperature.
Dostawca treści:: Biblioteka Nauki

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na półce

Skocz do pozycji: 6.

Tytuł:: Plasma Electrolytic Oxidation of Binary Al-Sn Alloys
Autorzy:: Gencer, Y.
Tarakci, M.
Gulec, A.
Cagatay Oter, Z.
Tematy:: 81.15.-z
81.05.Bx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1311754.pdf Link otwiera się w nowym oknie
Opis:: Binary Al-Sn (1, 2, 4, 6, 8 at.% Sn) synthetic alloys were prepared under vacuum-atmosphere controlled furnace. The Al-Sn alloys were coated by plasma electrolytic oxidation technique for 120 min in aqueous electrolyte containing sodium silicate and potassium hydroxide using the same electrical parameters. The microstructure, surface roughness, phase content and chemical composition of the coatings were characterized by scanning electron microscopy, profilometry and X-ray diffractometry. The coating became porous while coating thickness and surface roughness decreased, with increasing amount of Sn content in Al-Sn alloys. The coating was not formed on the Al-Sn alloy with 8 at.% Sn. Plasma electrolytic oxidation coatings were composed of mainly mullite ($3Al_2O_3$ ·$2SiO_2$), $γ-Al_2O_3$ and $α-Al_2O_3$ up to 4 at.% Sn. The $α-Al_2O_3$ phase formed as precipitate in the inner region of the coating and its amount decreased with Sn amount in the Al-Sn alloys. The $SnO_2$ phase was only detected in the coating of Al-6Sn alloy. Scanning electron microscopy - energy dispersive X-ray spectroscopy results showed that the traces of Sn were evident in the oxide coating along with Al, O, Si, Na, and K. The increasing addition of Sn in the alloys resulted in reduction of the overall microhardness of the coating with decreasing manner from dense inner region to the surface of the coatings.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Characterization of Ternary Mg-Sn-Mn Alloys
Autorzy:: Gulec, A.
Oter, Z.
Gunduz, K.
Tarakci, M.
Gencer, Y.
Tematy:: 81.05.Bx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1191625.pdf Link otwiera się w nowym oknie
Opis:: Ternary Mg-2Sn-Mn (0.5, 1, 2, and 2.5 wt% Mn) alloys were prepared under vacuum/argon atmosphere controlled furnace to investigate their microstructural and mechanical properties as a potential biodegradable implant material. As-cast alloys were heat treated at 550°C for 24 h and then at 300°C for 16 h. The alloys were characterized as-cast and after the heat treatment by optical microscopy, scanning electron microscopy, X-ray diffraction, and microhardness measurement. Mg phase is evident for both as-cast and heat-treated alloys while Mg₂Sn intermetallic phase is detected in all heat treated alloys except Mg-2Sn-0.5Mn. The dendritic microstructure changed to a microstructure with equiaxed grains after the heat treatment. The increase of Mn in ternary Mg-2Sn-Mn alloys resulted in a microstructure composed of smaller grains. Moreover, microhardness of ternary alloys slightly increased with the addition of Mn.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Oxide Based Ceramic Coating on Al-4Cu Alloy by Microarc Oxidation
Autorzy:: Cengiz, S.
Tarakci, M.
Gencer, Y.
Devecili, A.
Azakli, Y.
Tematy:: 81.15.-z
81.05.Bx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1400018.pdf Link otwiera się w nowym oknie
Opis:: In this study the Al-Cu aluminum alloy with 4 wt% Cu was prepared under controlled atmosphere and coated by microarc oxidation technique for the durations of 40, 80, and 120 min. The phase composition, surface roughness and hardness of the coating were characterized by X-ray diffraction, scanning electron microscopy, profilometry. The outer region contains larger sized porosities while fine porosities were formed in the inner dense region of the coating. The longer coating duration resulted in dense inner region with finely distributed $\alpha-Al_2O_3$ precipitates. The presence of Cu in the outer region is not significant while the presence of Si in inner region was lower than in the outer region. Mullite and $\gamma-Al_2O_3$ phases were formed for 40 min and $\alpha-Al_2O_3$ phase was additionally formed for 80 min and 120 min coating time. The coating thickness increased from 38 μm (40 min) to 115 μm (120 min) while the surface roughness $(R_{a})$ increased from 5 μm (40 min) to 9 μm (120 min).
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: YIG Film for Magnetic Field Sensor
Autorzy:: Kaya, A.
Atalay, S.
Gencer, H.
Kaya, O.
Kolat, V.
Izgi, T.
Tematy:: 81.15.Gh
84.40.Az
75.30.Ds
41.20.Jb
85.75.Ss; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1401218.pdf Link otwiera się w nowym oknie
Opis:: Single crystal $Y_3Fe_5O_{12}$ (YIG) film was grown onto (111) oriented gadolinium gallium garnet (GGG) substrate by the liquid phase epitaxy (PLD) technique. The X-ray diffraction measurements showed that epitaxial growth of the film along its (111) axis. The surface characteristic was investigated by atomic force microscopy (AFM) measurement. The magnetic field sensor consisted of a rectangular shape with 5 mm wide, 15 mm long and 5 μm thick YIG film and a pair of identical 50 μm wide microstrip copper transducers elements separated by 6 mm. The filter was tested by measuring reflection $S_{11}$ characteristic at various bias magnetic fields. The results have showed that when the bias field increased from 0 to 2.5 kOe, the frequency value corresponding to $S_{11}$ maxima increased from 1 GHz to 9 GHz. This suggests that the wide range magnetic field sensing and the highly sensitive field sensing are simultaneously fulfilled with the YIG film.
Dostawca treści:: Biblioteka Nauki

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