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Toplam kayıt 286, listelenen: 102-121
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Fabrication and characterization of Ni-W solid solution alloys via mechanical alloying and pressureless sintering
(2012)Ni-W solid solution alloy powders and sintered compacts were fabricated via mechanically alloying and pressureless sintering of powder batches with the compositions of Ni-xW (x=20, 30, 40wt.%). The crystallite size of the ... -
Fabrication and microstructural stability of spark plasma sintered Al2O3/Er3Al5O12 eutectic
(Elsevier Sci LTD, 2015)Al2O3-Er3Al5O12 (BAG) eutectic was prepared by a arc melting process under Ar atmosphere. Button shaped melts, containing fine sized irregular eutectic structures of 'Chinese script', with interpenetrated Al2O3 and EAG ... -
Fabrication of functionally graded SiAlON ceramics by tape casting
(Blackwell Publishing, 2006)Functionally graded SiAlON ceramics (FG-SiAlONs) were successfully prepared by the tape casting and lamination approach. Non-aqueous SiAlON slurries with five different alpha to beta-SiAlON ratios (85 alpha:15 beta, 70 ... -
Fabrication of in situ Ni(W)-WC nano composites via mechanical alloying and spark plasma sintering
(2012)Microstructural and mechanical properties of spark plasma sintered Ni-30 wt% W powders fabricated via mechanical alloying (MA) for 48 h were reported in the present study. Due to the intensive WC contamination during MA, ... -
Fast pyrolysis of sesame stalk: yields and structural analysis of bio-oil
(Elsevier Science BV, 2004)Sesame stalk pyrolysis experiments were conducted in a fixed-bed reactor in an attempt to determine the effects of pyrolysis temperature, particle size, heating rate and sweeping gas (N-2) flow rate on the product yields ... -
Fe-Cr siyah seramik pigment üretiminde ferrokrom kullanımı
(2010)Bu çalışmada, saf oksitlere göre daha ucuz hammaddeler laıllanarak. porselen karo bünyeleri için siyah Fe-Cr hematit pigmentlerin üretimi ve karalüerizasyonu amaçlanmıştır. Hematit ve ferrokrom ile üretilen pigmentlerin ... -
Ferromagnetic resonance and X-ray reflectivity studies of pulsed DC magnetron sputtered NiFe/IrMn/CoFe exchange bias
(2012)Ferromagnetic resonance and X-ray specular reflectivity measurements were performed on Ni81Fe19/Ir20Mn80/ Co90Fe10 exchange bias trilayers, which were grown using the pulsed-DC magnetron sputtering technique on Si(100)/SiO2(1000 ... -
First-principles investigation of titanium doping into beta-SiAlON crystal in TiN-SiAlON composites for EDM applications
(Elsevier Science Sa, 2015)Following the experimental work on the incorporation of titanium into beta-SiAlON crystal in TiN-SiAlON composites for electrical discharge machining (EDM) applications, Ti doping mechanisms in beta-Si6-z AlzOzN8-z have ... -
Fixed-bed catalytic pyrolysis of cotton-seed cake: Effects of pyrolysis temperature, natural zeolite content and sweeping gas flow rate
(Elsevier Sci LTD, 2006)Catalyzed pyrolysis of cotton-seed cake was studied under different experimental conditions. Variables investigated were pyrolysis temperature, zeolite content and sweeping gas flow rate. Experiments were carried out ... -
A flextensional piezo-composite structure for energy harvesting applications
(Elsevier Science Sa, 2014)A piezoelectric energy harvester (PEH) consisting of two cymbal electromechanical transducers and a cantilever beam structure designed and manufactured. The PEH under test is a novel design that aims to keep the transducers ... -
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 ... -
Fracture behaviour of magnesia and magnesia-spinel composites before and after thermal shock
(Elsevier Sci LTD, 2004)Microstructural changes, as a consequence of the thermal expansion mismatch between magnesia and spinel phases, and fracture behaviour of magnesia and spinel composites have been investigated as a function of spinel content ... -
Fracture toughness of alumina/lanthanum titanate laminate composites with a weak interface
(Elsevier Science BV, 2007)Layers of lanthanum titanate (La2Ti2O7) and alpha-alumina (alpha-Al2O3) were employed to form a layered composite in order to improve the fracture toughness of monolithic alumina. The composites were produced by two different ... -
Growth mechanism and magnetic and electrochemical properties of Na0.44MnO2 nanorods as cathode material for Na-ion batteries
(Elsevier Science Inc, 2015)Nanorods of Na0.44MnO2 are a promising cathode material for Na-ion batteries due to their large surface area and single crystalline structure. We report the growth mechanism of Na(0.44)Mno(2) nanorods via solid state ... -
High-surface-area SBA-15-SO3H with enhanced catalytic activity by the addition of poly(ethylene glycol)
(Springer, 2013)The influence of poly(ethylene glycol) (PEG) and synthesis temperature in the synthesis of SBA-15-SO3H was investigated to evaluate the catalytic activity in the esterification of propionic acid with methanol. The catalysts ... -
Hybrid processing and anisotropic sintering shrinkage in textured ZnO ceramics
(Natl Inst Materials Science, 2010)We have studied the combined effects of the templated grain growth and magnetic alignment processes on sintering, anisotropic sintering shrinkage, microstructure development and texture in ZnO ceramics. Suspensions of 0-10 ... -
Hydrothermal synthesis of calcium hexaborate pentahydrate from local boric acid and its photoluminescence characteristic
(Springer, 2018)The aim of the study is to synthesize hydrated calcium hexaborates via a hydrothermal method with the use of local (obtained from Turkish deposits) boric acid. The effects of temperature and boric acid to water and calcium ... -
Identification of Ti incorporation into beta-SiAlON crystal structure through transmission electron microscopy techniques
(Elsevier Sci LTD, 2012)In this paper, we report the transmission electron microscopy (TEM) observations on the incorporation of Ti transition metal element into beta-SiAlON crystal structure in a bulk beta-SiAlON-TiN composite material. Considering ... -
Image analysis of sulfate attack on hardened cement paste
(Elsevier Sci LTD, 2008)This paper presents an investigation conducted on the sodium sulfate resistance of Portland cements with various C(3)A contents, and on two blended cements produced by replacing 40% Of low C3A cement with fly ashes having ... -
Improvement in the Oxidation Resistance of beta-SiAlON Ceramics Produced from Mechanically Milled Powders
(Trans Tech Publications LTD, 2012)In the present study the oxidation behavior of beta-SiAlON ceramics, which were produced from conventional and high energy mechanical milled powders, was investigated. High energy mechanically milled powders have lower ...