Bu proje,tek ve cok damarli Magnezyum Diborur (MgB2) superiletken surekliboru bukme ve doldurma (... more Bu proje,tek ve cok damarli Magnezyum Diborur (MgB2) superiletken surekliboru bukme ve doldurma (CTFF) yontemi ile tel yapim cihazinin tasarlanipgelistirilerek teknolojik oneme sahip altyapi olusturulmasi ve nano katkilamaile MgB2 superiletkeninin superiletkenlik ozelliklerininiyilestirilmesi ve fiziksel karakterizasyonu uzerinedir. MgB2superiletken tellerin uretimi icin tasarlanan bu yeni teknolojiningelistirilmesiyle, AC ve DC akim icin bircok cihazda kullanilan superiletkenmalzemelerin endustriyel uygulamalarina guclu bir ivme kazandiracagi dusuncesihedefimiz olmustur. Superiletken tel yapimi icin teknigini ilk olarakTurkiye’de uygulayan ve buna uygun cihaz tasarimini gerceklestiren, arastirmagrubumuz olmustur. Dunyadaki benzer ornekleriyle karsilastirildiginda bu cihazhem daha ekonomik hem de boyut olarak daha kucuktur. Ayrica, en dista bakirbulunduran cift kilifli tel cekme sistemimiz benzeri olmayan bir sistemdir. Buyeni tasarim ile tellerimizin termal soka maruz kalmasi sonucu superiletkenlikozelligini uzun sure muhafaza edebilecegine inanmaktayiz. Bu cihaz ile birliktePIT (Powder In Tube) teknigi de kullanilarak tek damarli ve cok damarli MgB2superiletken teller farkli cap ve uzunluklarda uretilmistir. Projemizinana hedeflerinden biri olan nano boyutta katkilamalar yapilarak MgB2superiletken numunesinin superiletkenlik ozelliklerinin iyilestirilmesi vefiziksel karakterizasyonlarinin yapilmasi amaciyla oncelikle tartaric asit (C4H6O6),silicon oil, succinic asit (C4H6O4) ve borcarbid (B4C) katkilamalari denenmis ve MgB2superiletkeninin superiletkenlik ozellikler uzerine etkisi arastirilmistir. Bukatkilamalara ek olarak ayni donem icerisinde Tubitak destekli 109T106 noluproje kapsaminda da Benzen (C6H6) , Toulene (C7H8),Etil-toluen (C9H12) carbon(C) ve silicon carbide (SiC) katkilamalari da denenmistir. Yapilankatkilamalar sonucunda MgB2 superiletkeninin superiletkenlikozelliklerine etkisi R-T, M-T,M-H olcumleri ve XRD , SEM analizleriyapilarak arastirilmistir. ABSTRACT This project has mainly focused onfabrication of the single and multi-filament Magnesium Boride (MgB2)superconducting wires by continuous tube filling andforming (CTFF) method, designation and development of the wire drawingmachine, and also improvement of the superconducting properties of MgB2superconductors by adding nanometer-sized particles. The fabrication of MgB2superconducting wires is a new technology, and we believe that thisproject will increase the technological applications of the superconductingwires used for all AC and DC devices. Our research group is the first at the designationof a wire drawing machine and production of the superconducting wires inTurkey. Our machine has also some advantages in comparison to the ones thatresemble it in the world with its smaller dimensions and low cost. However, wenote that the system with double cladding with outer copper (OFHC) is unique toour system. We believe that with this new design, the wires were lessvolnurable to the thermal shocks. Single and multi-filament MgB2 superconductingwires at different diameter and lengths were produced by this machine togetherwith PIT (Powder In Tube) technique. Physical characterizations and improvement ofthe superconducting properties of the MgB2 samples by dopingnano-sized particles are in the scope of this project. Thus, the nanoadditivessuch as tartaric acid (C4H6O6), silicon oil,succinic acid (C4H6O4), and boron carbide (B4C)were added in MgB2 samples and their influences on superconductingproperties of MgB2 samples were investigated by means of R-T,M-T, M-H measurements, and XRD, SEM analysis. In the same period of time, the nano additives benzene (C6H6),toulene (C7H8), etil-toluene (C9H12), carbon (C), and silicon carbide(SiC), supported by TUBITAK under the project number 109T106, were also studied in addition to this project.
IEEE Transactions on Applied Superconductivity, 2016
A single-phase current-limiting transformer has been developed based on flux transfer. The transf... more A single-phase current-limiting transformer has been developed based on flux transfer. The transformer consists of two independent iron cores, one primary coil, two separate secondary coils, and superconducting windings/loops. Two iron cores are in a mechanical contact and clamped. Superconducting windings/loops act as coupling/decoupling mechanism between two iron cores. The transformer has been made operational via a switchgear of the applied dc current for a potential use in the current limitation when the transition between the superconducting and normal (quench) states can be triggered. DC and ac currents can be applied simultaneously in fault and no-fault conditions to mimic the realistic cases of use. With decoupling ac energy transfer, we propose that conventional switching off may be replaced with the approach described.
Bu proje,tek ve cok damarli Magnezyum Diborur (MgB2) superiletken surekliboru bukme ve doldurma (... more Bu proje,tek ve cok damarli Magnezyum Diborur (MgB2) superiletken surekliboru bukme ve doldurma (CTFF) yontemi ile tel yapim cihazinin tasarlanipgelistirilerek teknolojik oneme sahip altyapi olusturulmasi ve nano katkilamaile MgB2 superiletkeninin superiletkenlik ozelliklerininiyilestirilmesi ve fiziksel karakterizasyonu uzerinedir. MgB2superiletken tellerin uretimi icin tasarlanan bu yeni teknolojiningelistirilmesiyle, AC ve DC akim icin bircok cihazda kullanilan superiletkenmalzemelerin endustriyel uygulamalarina guclu bir ivme kazandiracagi dusuncesihedefimiz olmustur. Superiletken tel yapimi icin teknigini ilk olarakTurkiye’de uygulayan ve buna uygun cihaz tasarimini gerceklestiren, arastirmagrubumuz olmustur. Dunyadaki benzer ornekleriyle karsilastirildiginda bu cihazhem daha ekonomik hem de boyut olarak daha kucuktur. Ayrica, en dista bakirbulunduran cift kilifli tel cekme sistemimiz benzeri olmayan bir sistemdir. Buyeni tasarim ile tellerimizin termal soka maruz kalmasi sonucu superiletkenlikozelligini uzun sure muhafaza edebilecegine inanmaktayiz. Bu cihaz ile birliktePIT (Powder In Tube) teknigi de kullanilarak tek damarli ve cok damarli MgB2superiletken teller farkli cap ve uzunluklarda uretilmistir. Projemizinana hedeflerinden biri olan nano boyutta katkilamalar yapilarak MgB2superiletken numunesinin superiletkenlik ozelliklerinin iyilestirilmesi vefiziksel karakterizasyonlarinin yapilmasi amaciyla oncelikle tartaric asit (C4H6O6),silicon oil, succinic asit (C4H6O4) ve borcarbid (B4C) katkilamalari denenmis ve MgB2superiletkeninin superiletkenlik ozellikler uzerine etkisi arastirilmistir. Bukatkilamalara ek olarak ayni donem icerisinde Tubitak destekli 109T106 noluproje kapsaminda da Benzen (C6H6) , Toulene (C7H8),Etil-toluen (C9H12) carbon(C) ve silicon carbide (SiC) katkilamalari da denenmistir. Yapilankatkilamalar sonucunda MgB2 superiletkeninin superiletkenlikozelliklerine etkisi R-T, M-T,M-H olcumleri ve XRD , SEM analizleriyapilarak arastirilmistir. ABSTRACT This project has mainly focused onfabrication of the single and multi-filament Magnesium Boride (MgB2)superconducting wires by continuous tube filling andforming (CTFF) method, designation and development of the wire drawingmachine, and also improvement of the superconducting properties of MgB2superconductors by adding nanometer-sized particles. The fabrication of MgB2superconducting wires is a new technology, and we believe that thisproject will increase the technological applications of the superconductingwires used for all AC and DC devices. Our research group is the first at the designationof a wire drawing machine and production of the superconducting wires inTurkey. Our machine has also some advantages in comparison to the ones thatresemble it in the world with its smaller dimensions and low cost. However, wenote that the system with double cladding with outer copper (OFHC) is unique toour system. We believe that with this new design, the wires were lessvolnurable to the thermal shocks. Single and multi-filament MgB2 superconductingwires at different diameter and lengths were produced by this machine togetherwith PIT (Powder In Tube) technique. Physical characterizations and improvement ofthe superconducting properties of the MgB2 samples by dopingnano-sized particles are in the scope of this project. Thus, the nanoadditivessuch as tartaric acid (C4H6O6), silicon oil,succinic acid (C4H6O4), and boron carbide (B4C)were added in MgB2 samples and their influences on superconductingproperties of MgB2 samples were investigated by means of R-T,M-T, M-H measurements, and XRD, SEM analysis. In the same period of time, the nano additives benzene (C6H6),toulene (C7H8), etil-toluene (C9H12), carbon (C), and silicon carbide(SiC), supported by TUBITAK under the project number 109T106, were also studied in addition to this project.
IEEE Transactions on Applied Superconductivity, 2016
A single-phase current-limiting transformer has been developed based on flux transfer. The transf... more A single-phase current-limiting transformer has been developed based on flux transfer. The transformer consists of two independent iron cores, one primary coil, two separate secondary coils, and superconducting windings/loops. Two iron cores are in a mechanical contact and clamped. Superconducting windings/loops act as coupling/decoupling mechanism between two iron cores. The transformer has been made operational via a switchgear of the applied dc current for a potential use in the current limitation when the transition between the superconducting and normal (quench) states can be triggered. DC and ac currents can be applied simultaneously in fault and no-fault conditions to mimic the realistic cases of use. With decoupling ac energy transfer, we propose that conventional switching off may be replaced with the approach described.
Uploads
Papers by Ercan Ertekin