Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 2037, listelenen: 41-60
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Synchrotron texture analysis of thick BiFeO 3-PbTiO 3 layers synthesised by tape casting using Aurivillius and non-Aurivillius templates
(2012)The solid solution between bismuth ferrite and lead titanate (xBiFeO 3-(1-x)PbTiO 3 or BFPT) possesses a morphotropic phase boundary (MPB) between the rhombohedral and tetragonal forms at x=0.7. It is of interest to ... -
Characterization of mechanical properties of porcelain tile using ultrasonics
(2012)Ultrasound affords a very useful and versatile non-destructive method, using a large application area, for evaluating the microstructure and mechanical properties of materials. In this study, porcelain tiles were sintered ... -
Influence of post-annealing on electrical, structural and optical properties of vanadium oxide thin films
(2013)Vanadium oxide thin films were grown onto quartz substrates using the pulsed DC reactive magnetron sputtering technique at room temperature and afterwards post annealed under vacuum conditions in the temperature range from ... -
Characterization of Ni-W solid solution alloy powders and sintered compacts synthesized via mechanically activated hydrogen reduction of NiO-WO3 mixtures
(2013)Blended nickel oxide - tungsten oxide powders corresponding to the compositions of 70 wt% nickel - 30 wt% tungsten were mechanically alloyed (MA'd) for different durations such as 0 h, 6 h, 12 h and 24 h and reduced/alloyed ... -
Interface roughness and exchange bias - Coercivity ratio in Pulsed-DC magnetron sputtered NiFe/IrMn/CoFe exchange bias trilayers
(2013)Ta/Ru/Ta/Ni81Fe19/Ir20Mn 80/Co90Fe10 exchange bias multilayer was grown by using pulsed DC unbalanced magnetron sputtering technique. The deposition pulse frequency of the NiFe seed layer has been varied between 10 - 50 ... -
Production and permeability of porous Si 3 N 4 ceramics produced by starch addition
(Taylor and Francis Ltd., 2013)•We produce highly porous (up to 66%) Si 3 N 4 .•We enhance the permeability of Si 3 N 4 by using starch as pore former.•Increasing starch amount (?20vol.%) created large and bimodal pore channels and permeability values ... -
Microstructural evolution of mechanically alloyed and spark plasma sintered Ni-W alloy matrix composites
(2013)Microstructural evolution of Ni(W) solid solution alloys fabricated via mechanical alloying (MA) of Ni - 30 wt.% W powders and spark plasma sintering (SPS) at 1000 C for 3 min were presented in this study. Due to contaminations ... -
SERAMİK SAĞLIK GEREÇLERİ BÜNYELERİNDE CAMSI FAZ KOMPOZİSYONUNUN PİŞİRİM SICAKLIKLARINA ETKİSİ
(2013)Bu çalışmada seramik sağlık gereçleri bünyelerinde, kimyasal kompozisyonla birlikte camsı faz viskozitesinin değişimi incelenmiştir. Ayrıca, bu değişimin sinterleme sıcaklıkları üzerine etkisi araştırılmıştır. Seramik bünyedeki, ... -
Characterization of microstructural and morphological properties in as-deposited Ta/NiFe/IrMn/CoFe/Ta multilayer system
(Chinese Society of Metals, 2014)Surface morphology and its relationship with microstructure in Ta/NiFe/IrMn/CoFe/Ta multilayer system deposited by pulsed DC magnetron sputtering have been investigated in dependence of Ta buffer and NiFe seed layer ... -
FMR study of ultrahigh vacuum e-beam evaporated Co 23Cu 77 nanogranular films: Magnetotransport properties
(2006)The magnetic, magnetotransport and structural properties of Co 23Cu 77 granular thin films (7-43 nm) have been investigated using ferromagnetic resonance (FMR) and high-resolution XRD techniques. Co particles possess a ... -
Determination of thickness, density and roughness of Co-Ni-Al single and multiple layer films deposited by high-vacuum e-beam evaporation on different substrates
(2006)Thickness, density, surface and interface roughness of Al-Co-Ni single and multiple layer films deposited by high-vacuum e-beam evaporation on different substrates were investigated using X-ray reflectivity (XRR). The ... -
Mechanical properties and thermal shock behaviour of model MgO-MgAl 2O4 spinel composite refractories
(2006)The effects of varying the amounts (5 to 30 wt%) and particle sizes of magnesium aluminate spinel (i.e. preformed and in-situ formed) incorporated in a fully dense MgO, were investigated. Mechanical properties were measured ... -
Utilizzo della trachite come fondente nella produzione di piastrelle ceramiche
(2006)The possible use of trachyte as an alternative fluxing agent in a commercial floor tile body was investigated. The experiments were carried out in two parts: In the first part, standard tests were applied to the products ... -
Mineralogical and technological properties of underclays in Sile Region, Istanbul, Turkey
(2007)Sile Region, northeastern Istanbul, includes the most important underclay deposit of Turkey. In the area, Upper Cretaceous calc-alkaline volcanic rocks are the major parent rocks of the Neogene sequence composed of plastic ... -
Role of ?-SiAlON nuclei addition on the rod-like Y-Sm ?-SiAlON formation
(2007)In this study, effect of seed addition on the microstructural development of Y-Sm ?-SiAlON system has been investigated. Besides using pre-produced rod-like ?-SiAlON seeds, growth in the glassy phase and harvested by ... -
Densificaron of Sr-Mg doped SiAlONs with GPS and SPS
(2007)At temperature above 1200°C, the thermal stability of ?-SiAlON phases has been debated since 1992; however, it has been discussed if any ?-SiAlON phase can be formed in Ce, La, Eu and Sr-doped SiAlON systems. In our previous ... -
Proprietà Mineralogiche e technologiche di argille sotto strato di carbone provenienti dall'area di Sile (Istanbul, Turchia)
(2007)Sile Region, northeastern Istanbul, includes the most important underday deposit of Turkey. These days are composed of disordered kaolinite, illite, mixed-layer illite-smectite, smectite, gibbsite, quartz, pyrite, anatase, ... -
Utilizing of Borax solid wastes in roof tile and brick bodies
(2006)Boron minerals are widely employed in various fields such as ceramic, glass, cement, metallurgy, etc. Although boron deposits of the world are limited, the production level of boron-based products is continuously increased. ... -
Roll pressing of sodium perborate monohydrate
(2006)Sodium perborare monohydrate (SPM) is produced by calcining 3 moles of water of sodium perborate tetrahydrate with fluidized bed dryer. In fluidized bed dryer, the powders of the sodium perborate monohydrate are sucked by ... -
Piezoelectric actuator designs
(Springer US, 2008)Piezoelectric actuators are getting immiscible parts of many important electromechanical and smart systems. Smart systems consist mainly of sensors, actuators, and signal processing units. Actuators are the responding units ...
