Sürdürülebilir Kalkınma Amaçları

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• Say, Yakup(8)
• Dikici, Burak(6)
• Cihangir, Salih(4)
• Doğan, Fatih(4)
• Guler, Omer(4)
• Aksakal, B.(3)
• Aslan, Naim(3)
• Yilmazer, Yasemin(3)
• Aksakal, Bünyamin(2)
• Aslan, N.(2)
• Duru, Erhan(2)
• Kanca, Muhammed Sait(2)
• Kök, Mediha(2)
• Niinomi, Mitsuo(2)
• Say, Y.(2)
• Sezek, S.(2)
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• Dağdelen, Fethi(1)
• Dehghanpour, Heydar(1)
• Dikici, B.(1)
• Durmaz, Mustafa(1)
• Fidan, F.(1)
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• Mansouri, K.(1)

• MakaleYalnız künye2020Scopus SJRQ1/r/munzur/3158
  Carbon nanotube (CNT) reinforced magnesium matrix composites: The effect of CNT ratio on their mechanical properties and corrosion resistance

  Say, Yakup; Guler, Omer; Dikici, Burak

  In this study, mechanical properties and corrosion resistance of AZ61 and AZ91 magnesium matrix composites reinforced with 01, 0.2, and 0.5 wt% carbon nanotubes (CNTs) were investigated, detailly. CNTs have been successfully synthesized with 15–20 nm diameters by chemical vapor deposition (CVD) method and then, added to magnesium alloys by using the powder metallurgy (PM) technique. The composite compacts were consolidated by cold-pressing under 500 MPa pressure and sintered for 2 h at 500 °C under Ar atmosphere. The characterization studies of the unreinforced alloys and composites were carried out by scanning and transmission electron microscopes (SEM, TEM), electron dispersive spectroscope (EDS), Raman spectroscopy, and X-ray diffraction. The mechanical properties and corrosion behaviors of the composites have been compared with compression tests and potentiodynamic scanning (PDS) techniques, respectively. The results showed that the effect of CNTs reinforcement on strength increase was greater in AZ61 series samples than AZ91-based composites. The corrosion results of the presented study showed that the composites reinforced with lower CNTs (such as 0.1 or 0.2 wt%) and unreinforced alloys had better corrosion resistance than high CNTs (such as 0.5 wt%) containing structures. However, the most resistant structure to the corrosion for both AZ61 and AZ91 alloys were obtained in the composites reinforced with 0.2 wt% CNTs.

  AtıfScopus109·WoS85·OpenAlex104

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• MakaleYalnız künye2016Scopus SJRQ1/r/munzur/4117
  Effect of hydroxyapatite/SiO2 hybride coatings on surface morphology and corrosion resistance of REX-734 alloy

  Say, Yakup; Aksakal, Bunyamin; Dikici, Burak

  REX-734 stainless steel alloy was coated with hydroxyapatite (HA)-silicon dioxide (SiO2) composite (hybride) coatings by using the sol-gel method. Surface morphologies, adhesion resistances and corrosion behaviors of the coatings were examined and the characterization of the coatings was performed by using XRD, SEM, and EDS. It was observed that porous and crack-free surface morphology enhanced adhesion strength of the coatings. Through the shear tests, it was found that the adhesion resistance was 25.14 MPa in HA coatings and 25.47 MPa in HA-SiO2 coatings. Corrosion analyses of the coatings were performed by using potentiodynamic polarization (PDS) tests. It was determined that corrosion dimples formed on the coating surface and the corrosion resistance in HA+SiO2 coatings increased with decreasing porosity; however, in the further steps of corrosion, it reached to the base material by causing a pitting effect on the coated surface. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

  AtıfWoS36·OpenAlex39

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