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Toplam kayıt 49, listelenen: 1-20

Sonraki Sayfa

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 ...
A novel approach for synthesis of monticellite based bioactive ceramic powders from boron derivative waste

Köroğlu, Levent; Bütev, Ezgi; Esen, Ziya; Ayaş, Erhan (Elsevier Science BV, 2017-12-15)

Monticellite bioactive ceramics have a high usage potential as bone graft substitutes due to their superior mechanical properties compared to hydroxyapatite and excellent bioactivity. Turkey has almost 72% of the global ...
Antibacterial behavior of oxynitride glasses as a glassy grain boundary phase for silicon nitride-based ceramics

Kuşhan Akın, Şeniz R.; Dölekçekiç, Emrah; Webster, Thomas J. (2021-07)

Silicon nitride-based ceramics have provided significant advantages due to their high chemical resistance, high elastic modulus, and combination of hardness and fracture toughness (depending on self-reinforcement). Over ...
Boriding kinetics and mechanical properties of borided commercial-purity nickel

Çalık, A.; Uçar, Nebahattin; Delikanlı, K.; Çarkçı, M.; Karakaş, S. (Natl Inst Science Communication-Niscair, 2017-10)

Kinetics of boride layer growth and tensile behaviour in bonded commercial-purity nickel was investigated. Bonding was carried out in a solid medium consisting of Ekabor-II powders at 1173, 1223 and 1273 K for periods of ...
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 ...
Characterization of Ti6Al7Nb alloy foams surface treated in aqueous NaOH and CaCl2 solutions

Bütev, Ezgi; Esen, Ziya; Bor, Şakir (Elsevier Science BV, 2016-07)

Ti6Al7Nb alloy foams having 53-73% porosity were manufactured via evaporation of magnesium space holders. A bioactive 1 mu m thick sodium hydrogel titanate layer, NaxH2-xTiyO2y+1., formed after 5 M NaOH treatment, was ...
Clinoptilolite/PCL-PEG-PCL composite scaffolds for bone tissue engineering applications

Pazarçeviren, Engin; Erdemli, Özge; Keskin, Dilek; Tezcaner, Ayşen (Sage Publications LTD, 2017-03)

The aim of this study was to prepare and characterize highly porous clinoptilolite/poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) composite scaffolds. Scaffolds with different clinoptilolite ...
Comparison of the Short and Long-Term Degradation Behaviors of As-Cast Pure Mg, Az91 and We43 Alloys

Bütev Öcal, Ezgi; Esen, Ziya; Aydınol, Kadri; Dericioğlu, Arcan F. (Elsevier LTD., 2020-02-01)

The corrosion behaviors of pure magnesium, AZ91, and WE43 alloys have been evaluated by weight loss, hydrogen evolution rate, pH change measurements and potentiodynamic polarization as well as electrochemical impedance ...
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 ...
Corrosion Behaviours of Ti6Al4V-Mg/Mg-Alloy Composites

Esen, Ziya; Öcal, Ezgi Bütev; Akkaya, Aslı; Gürçay, Bensu; Özcan, Ceren; Özgümüş, Burcu Aslı; Duygulu, Özgür; Dericioğlu, Arcan F. (Elsevier LTD., 2020-04-15)

The effect of coupling of unalloyed Mg and Mg-alloys (AZ91 and WE43) with Ti6Al4V alloy on corrosion and degradation behaviours of produced composites has been investigated in simulated body fluid (SBF) by hydrogen evolution, ...
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 ...
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 ...
Designing thermochemical processes for ti-alloys produced by additive manufacturing techniques

Esen, Ziya; Doğu, Merve Nur; Bilgin, Güney Mert; Tan, Evren; Berkay Gümüş, Berkay; Dericioğlu, Arcan F. (2019)

Ti-6Al-4V alloys are extensively used in biomedical, aerospace and petro-chemical applications mainly due to their high specific strength, excellent corrosion resistance and high fatigue strength. In contrast to conventional ...
Diffusion Kinetics of Binary Ti-Ni Shape Memory Alloys

Uçar, Nazım; Doğan, Şule; Özdemir, Ahmet Faruk; Karakaş, Mustafa Serdar; Çalık, A. (Polish Acad Sciences Inst Physics, 2017-09)

In this work, the boriding of binary Ti-Ni shape memory alloys was carried out in a solid medium at 1173 and 1273 K for 2, 4, and 8 h using the powder pack method with Ekabor-Ni powders. The boride layer was characterized ...
Effect of borotitanizing on microstructure and wear behavior of Inconel 625

Kanca, Erdoğan; Günen, Ali; Çakır, Hüseyin; Karakaş, Mustafa Serdar; Gök, Mustafa Sabri; Küçük, Yılmaz; Demir, Mehmet (Elsevier Science BV, 2017-02-15)

nconel 625, a nickel-based superalloy, is used in a wide range of applications including the marine and petroleum industries under where it is subjected to harsh conditions such as high temperatures and highly corrosive ...
Effect of CNT impregnation on the mechanical and thermal properties of C/C-SiC composites

Tülbez, Simge; Esen, Ziya; Dericioğlu, Arcan F. (2020-06)

The present study investigates the effect of additional carbon source, in the form of carbon nanotubes (CNTs), on mechanical and thermal properties of carbon fiber reinforced silicon carbide (C/C-SiC) ceramic matrix ...
Effect of electrical discharge machining on dental Y-TZP ceramic-resin bonding

Rona, Nergiz; Yenisey, Murat; Küçüktürk, Gökhan; Gürün, Hakan; Çoğun, Can; Esen, Ziya (Elsevier Ireland LTD, 2017-04)

Purpose: The study determined (i) the effects of electrical discharge machining (EDM) on the shear-bond strength (SBS) of the bond between luting resin and zirconia ceramic and (ii) zirconia ceramic's flexural strength ...
Effect of nitrogen on the antibacterial behavior of oxynitride glasses

Akın, Şeniz R. Kuşhan; Dölekçekiç, Emrah; Webster, Thomas J. (2021-07-01)

The main drawback of bioglasses is their restricted use in load bearing applications and the consequent need to develop stronger glassy materials. This has led to the consideration of oxynitride glasses for numerous ...
Effect of post fabrication aging treatment on the microstructure, crystallographic texture and elevated temperature mechanical properties of IN718 alloy fabricated by selective laser melting

Ozer, Seren; Bilgin, Güney Mert; Davut, Kemal; Esen, Ziya; Dericioglu, Arcan F. (2022-08)

The effect of building direction and post fabrication aging treatment on the microstructure, crystallographic texture and high temperature mechanical properties of Inconel 718 (IN718) alloy fabricated by selective laser ...
Effect of SiC addition on the thermal diffusivity of SiAlON ceramics

Kuşhan Akın, Seniz Reyhan; Turan, Servet; Gençoğlu, Pervin; Mandal, Hasan (Elsevier SCI LTD, 2017-11)

Despite the fact that thermal conductivity is a crucial parameter for SiAlON ceramics with respect to their suitability in various applications, including high-temperature structural components, wear parts, and cutting ...

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