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Browsing Malzeme Bilimi ve Mühendisliği Bölümü by Issue Date

Browsing Malzeme Bilimi ve Mühendisliği Bölümü by Issue Date

Now showing items 1-20 of 50

Tini Reinforced Magnesium Composites By Powder Metallurgy

Esen, Ziya (John Wiley and Sons LTD., 2011)

Rod shaped Mg-TiNi composite samples were manufactured bypowder metallurgical route in which the samples were heated and deformed simultaneously using rotary hot swaging technique. Firstly, encapsulated argon filled copper ...
Stability of edge states and edge magnetism in graphene nanoribbons

Kuntsmann, Jens; Özdoğan, Cem; Quandt, Alexander; Fehske, Holger (Amer Physical Soc, 2011-01-21)

We critically discuss the stability of edge states and edge magnetism in zigzag edge graphene nanoribbons (ZGNRs). We point out that magnetic edge states might not exist in real systems and show that there are at least ...
Characterization of Ti-6Al-4V alloy foams synthesized by space holder technique

Esen, Ziya; Bor, Şakir (Elsevier Science S A, 2011-03-25)

Ti-6Al-4V foams, biomedical candidate materials, were synthesized by powder metallurgical space holder technique as a result of evaporation of magnesium to achieve desired porosity content. Final products contained porosities ...
Ionization energies, Coulomb explosion, fragmentation, geometric, and electronic structures of multicharged boron clusters B-n (n=2-13)

Akman, Nurten; Taş, Murat; Özdoğan, Cem; Boustani, Ihsan (Amer Physical Soc, 2011-08-11)

Based on the ab initio quantum chemical methods, we have determined fragmentation channels, ionization energies, and the Coulomb explosion of multicharged boron clusters B-n (n = 2-13), where n is the cluster size. The ...
Synthesis, molecular structure and DFT study of 2-(N-Benzoylbenzamido)pyridine-3-yl benzoate

Yüksektepe, Çiğdem; Kazak, Canan; Özdoğan, Cem; Güvenç, Ziya B.; Büyükgüngör, Orhan; Arslan, Figen; Odabaşoğlu, Mustafa (Springer/Plenum Publishers, 2011-10)

The biologically important 2-amino-3-hydroxypyridine reacts with benzoyl chloride to give 2-(N-benzoylbenzamido)pyridine-3-yl benzoate. This synthesized compound has been studied by elemental analysis, X-ray crystallography ...
Local Chemical and Topological Order in Al-Tb And its Role in Controlling Nanocrystal Formation

Kalay, Y. E.; Kalay, I.; Hwang, Jinwoo; Voyles, P. M.; Kramer, M. J. (Pergamon-Elsevier Science LTD, 2012-03)

How the chemical and topological short- to medium-range order develops in Al-Tb glass and its ultimate effect on the control of the high number density of face-centered-cubic-Al (fcc-Al) nuclei during devitrification are ...
Nanoscale structure and structural relaxation in Zr 50Cu 45Al 5 bulk metallic glass

Hwang, Jinwoo; Melgarejo, Z.H.; Kalay, Y.E.; Kalay, İlkay; Kramer, M.J.; Stone, D.S.; Voyles, P.M. (2012-05-11)

Hybrid reverse Monte Carlo simulations of the structure of Zr 50Cu 45Al 5 bulk metallic glass incorporating medium-range structure from fluctuation electron microscopy data and short-range structure from an embedded atom ...
Fragmentation and Coulomb explosion of multicharged small boron clusters

Taş, Murat; Akman, Nurten; Özdoǧan, Cem; Boustani, Ihsan (2012-06-22)

We extensively study the fragmentation and Coulomb explosion of multiply charged small boron clusters B n (n=2-13), where n is the cluster size. Our calculations are based on ab initio quantum-chemistry methods. Highly ...
The Effect of Processing Routes On the Structure and Properties of Magnesium-Tini Composites

Esen, Ziya (Elsevier Science SA, 2012-12-15)

TiNi particulate-reinforced magnesium matrix composites were fabricated by rotary hot swaging and post-annealing heat treatment. The magnesium matrix of the processed composites was observed to contain elongated grains ...
Titanium-magnesium based composites: mechanical propertiesand in-vitro corrosion response in ringer's solution

Esen, Z; Dikici, Burak; Duygulu, Özgür; Dericioğlu, Arcan F. (Elsevier Science BV, 2013-06-20)

Ti-Mg composite rods exhibiting both bioinert and biodegradable characteristics have been manufactured by hot rotary swaging from elemental powders of titanium and magnesium. As a result of processing, spherical magnesium ...
Epitaxial Graphene and Carbon Nanotubes on Silicon Carbide

Buke, Göknur Cambaz (CRC Press-Taylor & Francis Group, 2014)
A Comparison of Radiation Shielding of Stainless Steel With Different Magnetic Properties

Çalık, Adnan; Akbunar, Şahin; Uçar, Nazim; Yılmaz, Nihat; Karakaş, Mustafa Serdar; Akkurt, İskender (Vinca Inst Nuclear Sci, 2014)

The radiation shielding properties of three different stainless steels have been investigated. For this purpose, linear attenuation coefficients at photon energy levels of 662 keV and 1250 keV have been mea sured. The ...
Compositional Dependence of Raman-Active Mode Frequencies and Line Widths in Tlıns2xse2(1-X) Mixed Crystals

Güler, I.; Gasanly, N. M.; Korkmaz, F. (Elsevier Science, 2014-11-01)

The Raman spectra of mixed crystals TlInS2xSe2(1-x) have been investigated in the composition range of 0.25 <= x <= 0.75 and in the high-frequency region of 250-350 cm(-1) at room temperature. It was observed that Raman-active ...
Temperature Dependence of the Brillouin Frequency Shift and the Linewidth of the LA Mode in the Ferroelectric Phase of PZT-x (PbZr1-xTixO3)

Yurtseven, F.; Korkmaz, C. Şişman (IEEE, 2015)

The temperature dependence of the Brillouin frequency and the linewidth of the LA mode is studied for the concentration of x=0.45 in the ferroelectric phase of PbZr1-xTixO3 (PZT-x) within the temperature range of 443 to ...
Corrosion of Metallic Biomaterials

Dikici, Burak; Esen, Ziya; Duygulu, Özgür; Güngör, Serap (Springer Verlag, 2015)

Metallic materials have been used as biomedical implants for various parts of the human body for many decades. The physiological environment (body fluid) is considered to be extremely corrosive to metallic surfaces; and ...
Kinetics and mechanisms of isothermal devitrification inamorphous cu50zr50

Cullinan, Tim; Kalay, İlkay; Kalay, Y. Eren; Kramer, Matt; Napolitano, Ralph (Springer, 2015-02)

The crystallization kinetics and microstructural dynamics associated with devitrifying a melt-spun Cu50Zr50 metallic glass were investigated using isothermal treatments, in situ high-energy synchrotron X-ray diffraction, ...
Kinetics and Mechanisms of Isothermal Devitrification in Amorphous Cu50Zr50

Cullinan, Tim; Kalay, İlkay; Kalay, Y. Eren; Kramer, Matt; Napolitano, Ralph (2015-02)

The crystallization kinetics and microstructural dynamics associated with devitrifying a meltspun Cu50Zr50 metallic glass were investigated using isothermal treatments, in situ high-energy synchrotron X-ray diffraction, ...
In Vitro Bioactivity Investigation of Alkali Treated Ti6al7nb Alloy Foams

Bütev, Ezgi; Esen, Ziya; Bor, Şakir (Elsevier, 2015-02-01)

Biocompatible Ti6Al7Nb alloy foams with 70% porosity manufactured by space holder method were activated via alkali treatment using 5 M NaOH solution at 60 degrees C. The interconnected pore structures enabled formation of ...
Crystallization kinetics and phase transformation mechanisms incu56zr44 glassy alloy

Kalay, İlkay; Kramer, Matthew J.; Napolitano, R. E. (Springer, 2015-08)

The kinetics and phase selection mechanisms involved in the crystallization of an amorphous Cu-Zr alloy of eutectic composition (Cu56Zr44) were investigated using in situ high-energy X-ray diffraction (HEXRD), transmission ...
Microstructural Refinement of Ti-6Al-4V Alloy Fabricated by Additive Manufacturing Using Thermochemical Processes

Bilgin, Güney Mert; Esen, Ziya; Kuşhan Akın, Şeniz Reyhan; Dericioğlu, Arcan Fehmi (2016)

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