Başlık için Makale Koleksiyonu listeleme
Toplam kayıt 36, listelenen: 1-20
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Abrasive wear, structure, and mechanical aspects of Al–Al2O3 composites fabricated using various mixing media during P/M routes
(Springer New York LLC, 2016)The effects of mixing method during powder metallurgy (PM) routes on the abrasive wear behavior of Al–Al2O3p composite materials is investigated. For this purpose, starting Al powders with a constant volume fraction of 10% ... -
Alüminyumun iletken polimer ile kaplanması ve kaplama mikroyapısına korozyonun etkisinin incelenmesi
(Gazi Üniversitesi Mühendislik - Mimarlık Fakültesi, 2010)Bu çalışmada, alüminyumun iletken polimer bir malzeme olan polianilin ile elektrokimyasal yöntemle kaplanması, kaplanan yüzeyin korozyon öncesi ve sonrası mikroyapısı incelenmiştir. Polianilin kaplama işlemi, okzalik asit ... -
Characterization and photocatalytic properties of nanoporous titanium dioxide layer fabricated on pure titanium substrates by the anodic oxidation process
(Elsevier Ltd, 2014)Nanoporous titanium oxide (TiO2) layers were fabricated on commercially pure titanium (Cp-Ti) substrates by the anodic oxidation method under a potentiostatic regime. Anodic oxidation was performed in an aqueous solution ... -
A comparison on physical, structural, and photocatalytical properties of TiO2 nanopowders produced using sol-gel and flame spray pyrolysis
(2013)In this study, nanoscale photocatalyst TiO2 powders were synthesized via sol-gel and flame spray pyrolysis (FSP). Phase structures and ratios were analyzed by X-ray diffractometer (XRD). Size, specific surface area, and ... -
Degradation of contaminated industrial waste water using sol-gel derived Ru-doped TiO2 photocatalytic films
(Foundation for Environmental Protection and Research (FEPR), 2013)In this study, Ru-TiO2 films were deposited on glass substrates with a sol-gel route for degradation of contaminated industrial water. A solution with the Ru/Ti molar ratio of 0.05 was prepared using ruthenium and titanium ... -
Determination of optimum washing conditions for a lignite coal based on ash and sulfur content
(2014)This study deals with the maximization of composite yield subjected to multiple product constraints simultaneously based on float-sink data of a lignite coal from Yozgat-AyrIdam district of Turkey by using equal incremental ... -
The effect of anodization parameters on the formation of nanoporous TiO2 layers and their photocatalytic activities
(Elsevier B.V., 2014)In this work, nanoporous titanium dioxide (TiO2) layers were successfully formed by electrochemical anodization method on titanium (Ti) surface in fluorine containing electrolytes with different processing parameters. The ... -
Effect of electrolytic nickel coating on fatigue life of iron based powder metal parts
(2011)Electrolytic coating is one of the methods mainly used to provide corrosion resistance for the powder metal parts. The coatings have strong effects on mechanical properties of coated parts as well as on surface properties. ... -
Effect of Particle Morphology on Physical, Mechanical and Wear Properties of Cobalt Metal Powders
(Springer India, 2021)Cobalt is used in applications that require high densities and good mechanical properties. Cobalt powder is used in batteries, cemented carbides, stainless steel, machine tools and also in manufacturing of metal matrix ... -
Effects of dopant rate and calcination parameters on photoluminescence emission of Y2O3:Eu3+ phosphors: A statistical approach
(Elsevier Sci Ltd, 2019)In this study, Y2O3:Eu3+ phosphorescent powders with different dopant rates were synthesized by sol-gel method. Statistical experimental design methods were used to investigate the effects of calcination temperature (800, ... -
Effects of nitridation time and precursor particle size on yield of β-SiAlON synthesized from calcined kaolinite
(Springer New York LLC, 2019)Carbothermal reduction and simultaneous nitriding (CTRN) of natural aluminosilicates is a method used to obtain phases of Si–Al–O–N system. SiAlON phases have important applications, such as high technology ceramics, for ... -
Effects of the alumina reinforcement ratio on the corrosion properties of iron based composite materials
(Carl Hanser Verlag, 2020)Iron based composite materials reinforced with various ceramic particles are used in operating conditions requiring features such as high hardness, strength and wear resistance. The composite materials may be subject to ... -
Fabrication and characterization of Yb-doped Y2O3 powders and thin films
(Carl Hanser Verlag, 2020)Yttrium oxide (Y2O3) and ytterbium (Yb)-doped Y2O3 particles were synthesized via the sol-gel method from the aqueous solution of their nitrate salts. The synthesized powders were then deposited on Corning glass substrates ... -
Formation of alpha/beta-Si(3)N(4 )nanoparticles by carbothermal reduction and nitridation of geopolymers
(Wiley, 2019)Silicon nitride (Si3N4) particles with various alpha/beta-Si(3)N(4 )ratios were fabricated from geopolymer (GP)-carbon compositions (M2O center dot Al2O3 center dot 4.5SiO(2)center dot 12H(2)O+18C), where M is an alkali ... -
Fully reacted high strength geopolymer made with diatomite as a fumed silica alternative
(Elsevier Ltd, 2017)Geopolymers are formed by mixing of aluminosilicate sources with alkaline meta-silicate solution at room temperature. In the current study, diatomite of Turkish origin was fully utilized as a fumed silica alternative for ... -
Geopolimerlerden mekanokimyasal aktivasyon ile silisyum karbür tip nano parçacıkların üretilebilirliğinin araştırılması
(Gazi Üniversitesi, 2017)Mekanokimyasal olarak 6, 12, 24, 48 saat süreyle aktive edilen ve M= (Na+ veya K+) olmak üzere, sodyum veya potasyum alkali metal içeren (M2OoAl2O3o4.5SiO2o12H2O+18C) geopolimer karbon kompozisyonlarının karbotermal ... -
Kaynaklı birleştirmeli konstrüksiyonların çarpılma eğilimlerinin belirlenmesi için deneysel bir yaklaşım
(2008)Bu çalışmada, kaynaklı birleştirmeli konstrüksiyonların imalat sürecinde ve sonrasında oluşan çarpılma eğilimlerinin, çarpılma kuvvetleri vasıtasıyla belirlenmesi amaçlanmıştır. Bu amaçla, rijit bir kafes hücre sistemi ve ... -
Mechanochemical activation of sodium geopolymers containing carbon-nano powder
(Gazi Üniversitesi, 2017)Mekanokimyasal aktivasyon için 9 veya 18 mol karbon nano-tozlar içeren iki farklı sodyum geopolymer iyi bilinen geopolymer yöntemi ile hazırlanmıştır. 9 mol karbon, geopolimer üretimi aşamasında geopolimer reçineye dahil ... -
Modelling of relation between synthesis parameters and average crystallitesize of Yb2O3 nanoparticles using Box-Behnken design
(Elsevier, 2020)A straightforward wet chemical method has been applied for the fabrication of Yb2O3nanoparticles (NPs) fromytterbium nitrate solution by using ammonium carbonate as precipitation agent. Effects of precursor molarity(0.1, ... -
A New Approach for Cu and Fe/FexB Production from Chalcopyrite by Molten Salt Electrolysis
(Springer, 2020)In the present study, copper (Cu) and iron boride -( FexB) were produced for the first time through molten salt electrolysis using chalcopyrite -(CuFeS2) in an oxide- based borax electrolyte. Molten salt electrolysis was ...
