Başlık için Teknoloji Fakültesi listeleme

Implementation of Dormand-Prince based chaotic oscillator designs in different IQ-Math number standards on FPGA

Koyuncu, İsmail; Şeker, Halil İbrahim (Sakarya University Journal of Science, Ekim 2019)

Chaos and chaotic systems, one of the most important work areas in recent years, are used in areas such as cryptology and secure communication, industrial control, artificial neural networks, random number generators and ...

Implementation of IQ-Math based linear activation functions on FPGA

Akçay, Mehmet Şamil; Tuna, Murat; Koyuncu, İsmail; Alçın, Murat (1st International Congress of Multidisciplinary Studies and Research, 2019)

Nowadays, Artificial Neural Networks (ANN), which is one of the widely used fields of artificial intelligence, has been commonly used in many areas including regression, estimation, decision making, classification, image ...

Investigation of corrosion and wear behavior of borided AISI P20 steel in micro-wave furnace

Kayalı, Yusuf; Barut, Nusrettin; Talaş, Şükrü; Büyüksağiş, Aysel (IOP Publishing, 2019)

In this study, the effect of microwave boronizing treatment on the corrosion and wear behaviour of boride layer formed on AISI P20 steel have been investigated. The boronizing treatment was carried out using Ekabor-II ...

Investigation of corrosion behavior of borided gear steels

Güneş, İbrahim; Erdoğan, Muzaffer; Dalar, Alper (Springer, 2014)

In this study, corrosion behaviors of GS18NiMoCr36 (GS 18) and GS32NiCrMo6.4 (GS 32) gear steels borided in Ekabor-II powder at the temperature of 950 °C for 2 and 6 h were investigated in a 6 % M HCI acid solution. The ...

Investigation of corrosion behaviors at different solutions of boronized AISI 316L stainless steel

Kayalı, Yusuf; Büyüksağiş, Aysel; Güneş, İbrahim; Yalçın, Yılmaz (Springer, May 2013)

In this study, corrosion behaviors of boronized and non-boronized AISI 316L stainless steel (AISI 316L SS) were investigated with Tafel extrapolation and linear polarization methods in different solutions (1 mol dm−3 HCl, ...

Investigation of Corrosion Behaviours Hydroxyapatite (HAP) coated Ti6Al4V Implants by Using Electrochemical Deposition Method

Büyüksağiş,Aysel; Kayalı, Yusuf (2018)

In this research, hydroxyapatite (HAP) has been coated on the Ti6A14V alloy surface by electrophoresis method. In this electrophoresis method, NH4H2PO4 is taken as P precursor and Ca (NO3)2.4H2O is taken as Ca precursor ...

Investigation of diffusion kinetics of borided AISI P20 steel in micro-wave furnace

Kayalı, Yusuf (Elsevier, 2015)

In present study, kinetics of borides formed on AISI P20 steel has been investigated by boronizing treatment which was carried out in Ekabor-II powders at the process temperatures of 1123, 1173 and 1223 K for 2, 4 and 6 h ...

Investigation of diffusion kinetics of plasma paste borided AISI 8620 steel using a mixture of B2O3 paste and B4C/SiC

Güneş, İbrahim; Şükrü, Taktak; Yalçın, Yılmaz; Şükrü, Ülker; Kayalı, Yusuf; Bindal, Cuma (Springer, 2013)

In the present study, AISI 8620 steel was plasma paste borided by using various B2O3 paste mixture. The plasma paste boriding process was carried out in a dc plasma system at temperatures of 973, 1023 and 1073 K for 2, ...

Investigation of electrochemical corrosion behavior in a 3.5wt.% NaCl solution of boronized dual-phase steel

Kayalı, Yusuf; Anatürk, Bilal (Elsevier, April 2013)

In this study, corrosion behaviors of boronized and non-boronized dual-phase steel were investigated with Tafel extrapolation and linear polarization methods in a 3.5 wt.% NaCl solution. Microstructure analyses show that ...

Investigation of mechanical properties of boro-tempered ductile iron

Kayalı, Yusuf; Taktak, Şükrü; Ulu, Sinan; Yalçın, Yılmaz (Elsevier, 2010)

In this study, the effects of boro-tempering heat treatment on mechanical properties of ductile iron were investigated. Standard tensile test samples and unnotched Charpy specimens were boronized at 900 °C for 1, 3 and 5 ...

Investigation of surface properties and wear resistance of borided steels with different B4C mixtures

Güneş, İbrahim; Kayalı, Yusuf (Niscair, 2012)

Boriding is a thermo-chemical surface hardening treatment applied to iron based materials. This treatment is performed by boron element diffusing into iron based materials at high temperatures. Wear resistance increases ...

Investigation of the diffusion kinetics of borided stainless steels

Kayalı, Yusuf (Springer, December 2)

In this study, the kinetics of borides formed on AISI 420, AISI 304 and AISI 304L stainless steels was investigated. Boronizing treatment was carried out using Ekabor-II powders at the processing temperatures of 1123, 1173 ...

Investigation of tribological behaviour of plasma paste boronized of AISI 8620, 52100 and 440C steels

Güneş, İbrahim; Ülker, Şükrü (Niscair, 2011)

In the present study, AISI 8620, 52100 and 440C steels were plasma paste boronized (PPB) by using 100% borax paste. PPB process was carried out in a dc plasma system at temperature of 700 and 800 °C for 3 and 5 h in a gas ...

Investigation of wear and adhesion behaviors of borided steels

Kara, Rıza; Çolak, Fatih; Kayalı, Yusuf (Springer, 2016)

In this study, AISI P20, H13 and D2 steels were pack borided at 900 and 950 °C for retention times of 2, 4 and 6 h. The boride layer thickness values changed depending on the chemical composition of the steels. The hardness ...

An investigation on renewable energy education at the university level in Turkey

Karabulut, Abdurrahman; Gedik,Engin; Keçebaş,Ali; Alkan, Mehmet Ali (2011)

In the present study, to discover how teaching of renewable energy sources in Turkey is carried out at the university level, a questionnaire was developed and applied at different universities in Turkey. The analyses ...

Joining of microwave sintered Fe-26Al, Fe-30Al, Fe-26Al-14Ti and Fe-30Al-14Ti powder mixtures by diffusion bonding using Cu interlayer [Mikrodalga ile sinterlenmiş Fe-26Al, Fe-30Al, Fe-26Al-14Ti ve Fe-30Al-14Ti toz karişimlarinin Cu aratabakali difüzyon kaynaǧi ile birleştirilmesi]

Çakmakkaya, Mehmet; Talaş, Şükrü (Gazi Üniv. Müh. Mim. Fak. Der., 2012)

Bu çalışmada, mikrodalga sinterleme yöntemi ile 550 ○C de 1 saat süreyle sinterlenmiş Fe-26Al, Fe-30Al, Fe-26Al-14Ti ve Fe-30Al-14Ti toz karışımlarının, elektrolitik bakır aratabaka kullanılarak difüzyon kaynağı yöntemiyle ...