Kurum Yazarı "Kurama, Semra" Makale Koleksiyonu İçin Listeleme
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Characterization of mechanical properties of porcelain tile using ultrasonics
Eren, Elif; Kurama, Semra (2012)Ultrasound affords a very useful and versatile non-destructive method, using a large application area, for evaluating the microstructure and mechanical properties of materials. In this study, porcelain tiles were sintered ... -
Characterization of porosity and defect imaging in ceramic tile using ultrasonic inspections
Eren, Elif; Kurama, Semra; Solodov, Igor (Elsevier Sci LTD, 2012)In this study, three different ultrasonic nondestructive methods (NDT) used to characterize porosity and identify defects in ceramic materials were employed as alternative approaches to conventional systems. A contact ... -
Characterization of Thermochromic Pigments as Coating Materials
Civan, Lale; Kurama, Semra; Ayas, Erhan (2018)In this study, thermochromic coatings were produced using thermochromic pigment and polyvinylpyrrolidone (PVP). It is aimed to develop innovative materials that will reduce external dependence, increase international ... -
A comparison of sintering techniques using different particle sized beta-SiAlON powders
Eser, Onur; Kurama, Semra (Elsevier Sci LTD, 2012)In the present study sintering behavior and mechanical properties of beta-SiAlON ceramics were investigated using different sintering techniques (gas pressured sintering (GPS), pressureless sintering and spark plasma ... -
Design of Alternative Composite Material to Available Tractor Cabins
Mihalic, Fatma; Kurama, Semra (Springer, 2016)All mobile machinery is at the risk of rolling over, depending on the machinery characteristics the need to protect operator from the risk of being injured or causing death due to rollover has been of prime importance in ... -
Effect of Al2O3 Nanofiller on ion conductivity, transmittance, and glass transition temperature of PEI: LiTFSI: PC: EC polymer electrolytes
Sakarya, Oğuzhan; Kurama, Semra; Günkaya, Göktuğ (Springer, 2016)In the present study, ion conductivity, optical properties, and glass transition temperatures are characterized for polymer electrolytes composed of poly(ethyleneimine) (PEI), lithium bis(trifluoromethane) sulfonylimide ... -
The Effect of Porosity and Glassy Phase Amount of Porcelain Tiles on Ultrasonic Velocity
Gültekin, Elif Eren; Öztürk, Zahide Bayer; Kurama, Semra (Australian Ceramic Society, 2015)Non-destructive testing (NDT) has been playing critical role in processing, testing and structural evaluation of materials. Ultrasonic testing is a widely used characterization method in non-destructive testing (NDT). The ... -
Effect of the processing on the production of cordierite-mullite composite
Özel, Emel; Kurama, Semra (Elsevier Sci LTD, 2010)In this study, effect of process on the production of cordierite mullite composite was studied. For this reason two different processing methods were used in the production of cordierite mullite composites. In first process, ... -
The effect of the wet-milling process on sintering temperature and the amount of additive of SiAlON ceramics
Eser, Onur; Kurama, Semra (Elsevier Sci LTD, 2010)In this study, nano-sized SiAlON powders were produced by wet milling at elevated speeds as a top-to-bottom process. Before the milling process, different milling times and mediums were performed for the determination of ... -
The effects of processing on the alpha <-> beta SiAlON transformation during cycling heat treatments
Kurama, Semra (Elsevier Science Sa, 2008)Typical alpha/beta-SiAlON starting composition of formula Nd(0.33)Si(9.38)Al(2.62)O(1.62)N(14.38) was densified by two different sintering processes, hot pressing (HP) and gas pressure sintering (GPS), using Nd(2)O(3) as ... -
The effects of sintering temperature on phase and pore evolution in porcelain tiles
Gültekin, Elif Eren; TopAteş, Gülsüm; Kurama, Semra (Elsevier Sci LTD, 2017)The phase and pore evolution of porcelain tiling against sintering temperature are investigated in this study. A standard porcelain tile composition was sintered at nine different temperatures between 1150 and 1230 degrees ... -
Improvement in the Oxidation Resistance of beta-SiAlON Ceramics Produced from Mechanically Milled Powders
Eser, Onur; Kurama, Semra (Trans Tech Publications LTD, 2012)In the present study the oxidation behavior of beta-SiAlON ceramics, which were produced from conventional and high energy mechanical milled powders, was investigated. High energy mechanically milled powders have lower ... -
The influence of different CaO source in the production of anorthite ceramics
Kurama, Semra; Özel, Emel (Elsevier Sci LTD, 2009)The effects of starting raw materials and firing conditions oil anorthite (CaAl2Si2O8) phase formation are investigated by differential thermal analysis (DTA)-thermogravimetry (TG) and X-ray powder diffraction (XRD). Four ... -
Investigation properties of BaO/RO-Al2O3-R2O3-B2O3-SiO2 glass-ceramic sealants for solid oxide fuel cell
Kurama, Semra; Saydam, Gamze (Australian Ceramic Society, 2017)Glass-ceramics are commonly used as sealing materials for planar solid oxide fuel cells (SOFCs). The major requirements of stack and module builders for these materials are the stability of the coefficient of thermal ... -
Oxidation behaviour and kinetics of alpha-SiAlON ceramics
Çorapçıoğlu, Gülcan; Kurama, Semra (Taylor & Francis LTD, 2009)In this study, the oxidation behaviours of Y, Sin and Y/Sm doped alpha-SiAlON ceramics are investigated to examine the oxidation kinetics. The oxidation tests are carried out at 1300-1450 degrees C for different holding ... -
Production of cordierite ceramic by aqueous tape casting process
Özel, Emel; Kurama, Semra (Elsevier Science Sa, 2008)Tape-casting process was used to produce cordierite ceramics in an aqueous system with polyvinylalcohol (PVA), and polyethyleneglicol (PEG), as binder and plasticizer, respectively. Before starting to tape-casting studies, ... -
The reaction kinetics of rice husk based cordierite ceramics
Kurama, Semra; Kurama, H. (Elsevier Sci LTD, 2008)In this study, rice husk ash (RHA) was used as a silica source for cordierite production. Two different groups of samples were prepared in order to achieve the synthesis of cordierite. In the first group (HS-0), kaolinite, ... -
Seramik Sağlık Gereçleri Bünyelerinde Camsı Faz Kompozisyonunun Pişirim Sıcaklıklarına Etkisi
Sarı, Hasan; Kurama, Semra (2013)Bu çalışmada seramik sağlık gereçleri bünyelerinde, kimyasal kompozisyonla birlikte camsı faz viskozitesinin değişimi incelenmiştir. Ayrıca, bu değişimin sinterleme sıcaklıkları üzerine etkisi araştırılmıştır. Seramik ... -
SERAMİK SAĞLIK GEREÇLERİ BÜNYELERİNDE CAMSI FAZ KOMPOZİSYONUNUN PİŞİRİM SICAKLIKLARINA ETKİSİ
Sarı, Hasan; Kurama, Semra (2013)Bu çalışmada seramik sağlık gereçleri bünyelerinde, kimyasal kompozisyonla birlikte camsı faz viskozitesinin değişimi incelenmiştir. Ayrıca, bu değişimin sinterleme sıcaklıkları üzerine etkisi araştırılmıştır. Seramik bünyedeki, ... -
Sr2+-Mg2+-doped SiAlON ceramics
Kurama, Semra; Çiğdemir, G; Mandal, Hasan; Herrmann, M (Blackwell Publishing, 2006)In the present work, multi-cation-doped (Sr2+-Mg2+) SiAlON ceramics were investigated. MgO and SrO were used in 100:0 and 50:50 molar ratios. The mixture was sintered at 1800 degrees and 1830 degrees C for 1 h in a gas ...