Summary

Dr. Burak Dikici was born in 1978, received his MSc in 2004 and Ph.D. in 2008, respectively and, works in the Department of Metallurgical and Materials Engineering at Ataturk University. His research interests include corrosion, metal matrix composites, and metallic biomaterials.

Personal Details

  • Gender: Male
  • Nationality: Turkish
  • Place of birth: Turkey
  • Date of birth: April 01, 1978
  • Marital status: Married
  • Children: 2

Education

  • Ph. D.; Atatürk Üniversitesi, Natural & Applied Sciences, Mechanical Engineering, 2004 – 2008.
  • M. Sc.; Atatürk Üniversitesi, Natural & Applied Sciences, Mechanical Engineering, 2002 – 2004.
  • B. Sc.; Atatürk Üniversitesi,  Mechanical Engineering,1996 – 2001.

Dissertation: Production of Al/TiC metal matrix nanocomposites by means of hot press method and their characterization

  • Abstract: Compared to traditional metal matrix composites (MMC), in-situ metal matrix nanocomposites (MMNCs) own improved mechanical properties. MMNC is a multiphase material whose reinforcing phases are synthesized in the matrix by chemical reactions during fabrication. In the literature, the studies on the production process, mechanical and corrosive properties of these composites are relatively rare. In this study, Al-based composite reinforced with in-situ TiC nanoparticles was produced by conventional hot pressing. The microstructural, interfacial, mechanical properties and corrosive behavior of the produced composite were investigated. These tests indicated that the Al matrix reinforced with in-situ TiC nanoparticles improved the hardness, strength, and corrosion resistance. The equipment was used, are differential thermal analysis (DTA) to figure out the formation reactions during the sintering process, X-ray diffractometry (XRD) to obtain the phases and potentiostat system to examine the corrosive behaviors. In addition, scanning electron microscope (SEM) and transmission electron microscope (TEM) were to be used to examine the in-situ phase structures in the nanocomposites.
  • Keywords: In-situ reaction,   nanomaterials,   hot pressing,   microstructure,   corrosion

Master Thesis: Corrosion behaviors of Al-Si-Mg based SiC particle reinforced metal matrix composites

  • Abstract: In this study, corrosion behaviors were investigated of metal matrix composites (MMCs) based Al-7%Si-0.7%Mg reinforced with SiC particles 10, 20 vol.% respectively. Cyclic potentiodynamic polarization tests have been carried out to assess the effects reinforcement particle volume fraction, reactions product at the particle/matrix interface and voids at the interface on corrosion characteristics of both matrix alloy and composites in 3.5 wt.% NaCl aqueous solution, and then, the corrosion behavior of composites was determined by using Epit, Ecorr and icorr values obtained from polarization curves. In addition, the effect of aging heat treatment (T6) on the corrosion behavior of composites was investigated. The surface morphology of composites before and after the corrosion test was determined by optical microscopy and SEM, also, the XRD technique has been used in order to determine intermetallic phases that occurred at the matrix/SiC interface. At the end of the study, it has been found that pitting corrosion was the primary type of attack, and the corrosion resistance decreased with increased both SiC particle volume fraction and aging time in Al/SiC composites.
  • Keywords: MMCs,   SiC,   Corrosion,   Polarization,   Pitting Corrosion

Specialties

Metal matrix composites, corrosion, production of in-situ nanocomposites, Al and alloys, cyclic and potentiodynamic polarization, electrochemical impedance spectroscopy, mult-layered composites and their mechanical properties.

Special Skills

  • Scanning electron microscopy (SEM)
  • X-ray diffraction analysis (XRD)
  • Differential thermal analysis (DTA)
  • High temperature vacuum furnaces
  • Conventional hot pressing method
  • Sol-gel, hydrothermal and PVD surface modification techniques
  • Tensile and hardness tests
  • Aging and heat treatment processes
  • Potentiostat/galvanostat
  • Light microscopy
  • Sample preparation, moulding, polishing

Research Interests (current)

Biomaterials (*): Characterization and surface modification of beta (β)-type titanium alloys with bioactive hybrid coating in order to improve their body integration and biocompatibilitydetermine of tribological and mechanical properties,  optimization of production parameters, determine the biocompatibility of this coating with in vitro orrosion tests.

Corrosion (*): Open circuit potential (OCP), cyclic polarization (CP), potentiodynamic polarization (PDS), electrochemical impedance spectroscopy (EIS), corrosion monitoring, effects of metallurgical structure on corrosion, pitting and passivity.

Composite coatings : The effect of post heat treatment on microstructure of cold sprayed coatings and its microstructural response, the corrosion behaviours of composite coatings such as FeB, FeB/h-BN, Al-Si/SiOdeposited onto an aluminium alloys by atmospheric plasma spraying. The effects of process parameters such as arc current spray distance on the corrosion.

In-situ nanocomposites: Production of in-situ nanocomposites by hot pressing method, the effect of production temperature and sintering time on the forming morphology, the synthesis of in-situ TiC and Al2O3 nanoparticles in melted Al matrix, determination of mechanical and corrosive properties, microstructural responses of interfaces between the matrix and reinforcements.

Metal matrix composites (MMCs): The effect of TiC and B4C reinforcements on hot pressing composites, the effect of particle TiO2 (sol-gel), SiO2 (peroxide) and Ni (electroless) coatings on the corrosion behaviour of Al based MMCs reinforced with SiC particles, the production of Al/TiC particle multi-layered composites and their artificially age hardening behaviour.