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Hasan Koten, Speaker at Materials Science and Engineering Events
Individual Researcher, Turkey
Title : Time-Dependent Corrosion Resistance Investigation of Hydrophobic Magnesium Alloys


 In this study, the corrosion resistance of AZ31B magnesium alloy was 2 evaluated against time. Because of its sensitivity to corrosion, AZ31B magne3 sium alloy was chosen to be coated with elephoretic coating method. With the 4 electrophoretic coating method, it is possible to coat the alloy surfaces practically 5 with biocompatible materials in one step. The characterization of the alloy surfaces 6 has been changed in order to eliminate the susceptibility of magnesium to corro7 sion. Surface characterization has been made superhydrophobic and hydrophobic by 8 coating the alloys. Stearic acid and magnesium nitart-containing coating materials 9 are aimed to reduce the surface energy of alloys. It has been shown that the corrosion 10 resistance of the surface coated alloys is higher than the uncoated alloy samples. To 11 discuss the authenticity of the thesis, it was observed for the first time that AZ31B 12 alloys were kept in corrosive liquids for a long time and preserved their hydrophobic 13 properties thanks to the coating. Since AZ31B alloy is used as a bio-implant raw 14 material, corrosion has been evaluated for the first time in an environment simulating 15 body conditions. Coated AZ31B samples have been shown to retain their stabiliza16 tion in DMEM for approximately one month. It has been shown that K.10AZ31B and 17 K.12AZ31B alloys taken as coating samples have superhydrophobic surface charac18 terization, and K.8AZ31B and K.D.10AZ31B samples are hydrophobic coated. For 19 the first time, AZ31B samples were coated at these concentrations. It has been shown 20 that the coating samples were made successfully and the coatings continued for a 21 long time both in 3.5% NaCl environment and in DMEM containing antibiotics.


Assoc. Prof. Hasan KOTEN graduated from Mechanical Engineering Department with honor of degree in 2007. At the same time, he received a BSc degree in Electrical and Electronics Engineering Department as a double major. Hasan KOTEN worked in the first full geometry engine design project for The Scientific and Technological Research Council of Turkey (TUBITAK). During his Ph.D., he worked as a visiting scholar at the Ohio State University Center for Automotive Research (CAR). Hasan KÖTEN also worked as a consultant for TUBITAK Domestic Electric Vehicle Design project in 2017. He attended to CEDP group at Brunel University as a post-doctorate researcher in 2018. He leaded number of projects, MSc and PhD thesis in this combustion field. He attended and presented more than 100 conference proceedings and published about 50 articles indexed in SCI and SCI-e. He is awarded by TUBITAK 2238 programme with first degree over all national PhD thesis applications. Assoc. Dr. Hasan KÖTEN is still working at the mechanical engineering department of Istanbul Medeniyet University. Currently, He is working at Turkey's largest TÜBÄ°TAK budgeted 2400HP 16 and 8-cylinder engine production project.