Kurum Yazarı "Kara, Alpagut" Fakülteler İçin Listeleme
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alpha/beta SiAlON BASED COMPOSITES INCORPORATED WITH MoSi2 FOR ELECTRICAL APPLICATIONS
Ayas, Erhan; Kara, Alpagut; Kara, Ferhat (Amer Ceramic Soc, 2010)Electrically conductive alpha-beta SiAlON composites containing 30 vol. % MoSi2 was prepared by gas pressure sintering (GPS). The effect of sintering atmosphere on phase formation, grain growth, mechanical and electrical ... -
Analytical transmission electron microscopy observations on the stability of TiCN in electrically conductive alpha-beta SiAlON/TiCN composites
Yurdakul, Hilmi; Turan, Servet; Ayas, Erhan; Tunckan, Orkun; Kara, Alpagut (Elsevier Sci LTD, 2014)Coating of alpha-beta SiAlON granules with TiCN powder led to a continuous 3D electrically conductive network formation. Here, the stability of TiCN grains following gas pressure sintering (GPS) and its effect on the ... -
Carbon nanotube/boehmite-derived alumina ceramics obtained by hydrothermal synthesis and spark plasma sintering (SPS)
Zaman, Ali Can; Üstündağ, Cem B.; Çelik, Ali; Kara, Alpagut; Kaya, Figen; Kaya, Cengiz (Elsevier Sci LTD, 2010)Preparation, structure and properties of hydrothermally treated carbon nanotube/boehmite (CNT/gamma-AlOOH) and densification with spark plasma sintering of Al2O3 and CNT/Al2O3 nanocomposites were investigated. Hydrothermal ... -
Characterisation of dorylaion (Turkey) pottery sherds from Hittite period
Kara, Alpagut; Darga, M; Ay, Nuran; Ayaş, E; Sivas, Taciser; Sivas, Hülya (Trans Tech Publications LTD, 2004)In this study, representative samples were taken from eleven pottery sherds of Hittite period recovered during the archaeological excavations of different years in the ancient city Dorylaion, which is nowadays called as ... -
Characterisation of polluted clay-zeolite landfill liner materials using scanning electron microscopy
Güney, Yücel; Koyuncu, H; Kara, Alpagut (IOP Publishing LTD, 2004)A landfill liner act as a barrier to minimize the migration of leachates in waste containment systems. Thus, proper management of leachates is important to minimize the risk of contamination for groundwater and subsoil. ... -
Characterization of Hellenistic Period Megarian Bowls From Dorylaion
Issı, Ali; Kara, Alpagut; Okyar, Fisun; Sivas, Taciser; Sivas, Hakan (Inst Chemical Technology, Dept Glass Ceramics, 2011)The excavation works being carried out since 1989 at Dorylaion (Eskisehir/Turkey) results in many findings belonging to different civilizations spanning from the First Bronze age to Ottoman period. One of the important ... -
Characterization of lead glazed potteries from Smyrna (Izmir/Turkey) using multiple analytical techniques; Part I: Glaze and engobe
Özçatal, M.; Yaygingol, M.; Issı, Ali; Kara, Alpagut; Turan, Servet; Okyar, Fisun; Minceva-Sukarova, B. (Elsevier Sci LTD, 2014)Eighteen lead glazed potsherds from the Ayasuluk region (Smyrna) were characterized in order to have detailed knowledge of their production technology. Micro-Raman and scanning electron microscopy (SEM) with the combination ... -
Characterization of lead glazed potteries from Smyrna (Izmir/Turkey) using multiple analytical techniques; Part II: Body
Özçatal, M.; Yaygingol, M.; Issı, Ali; Kara, Alpagut; Turan, Servet; Okyar, Fisun; Minceva-Sukarova, B. (Elsevier Sci LTD, 2014)Lead glazed pottery was one of the most important ceramic ware groups for the Late Hellenistic, Roman, Byzantine and Ottoman cultures in Anatolia. They were produced in different places in Anatolia such as Tarsus, Iznik, ... -
Characterization of underclays from Agacli-Kemerburgaz region of Istanbul/Turkey and their evaluation for porcelain tile production
Yavuz, O.; Kayacı, Burcu; Küçüker, A. S.; Özdamar, S.; Uzun, M.; Yanık, G.; Kara, Alpagut (Techna Srl, 2011)gacli-Kemerburgaz area, NW of Istanbul, is one of the most important underclay deposits of Turkey This area is composed of Paleozoic sedimentary sequence, Upper Cretaceous volcanic rocks, Neogene sediments and Quaternary ... -
Cost Effective Slurry Preparation in Porcelain Tile Production
Küçüker, A. S.; Kara, Alpagut; Kayacı, Kaan; Gerl, S. (Goller Verlag GMBH, 2009)During ceramic tile production (wall, floor and porcelain stoneware), wet milling process for the preparation of ceramic slurries is widely used. The currently preferred wet grinding machines are discontinuous and/or ... -
Decolouration effect of WC addition on gas pressure sintered alpha-beta SiAlON ceramics
Ayas, Erhan; Kara, Alpagut; Mandal, Hasan; Turan, Servet; Kara, Ferhat (Elsevier Science BV, 2004)In this study, an attempt was made to mask an inhomogeneous gray colouration featured on the surfaces of the gas pressure sintered alpha-beta SiAlON ceramics containing 50% alpha and 50% beta SiAlONs in the form of spots. ... -
Design of a scenario-based synthetic mixed pulse generator [Senaryo tabanli bir sentetik darbe üreteci tasarimi]
Gençol, Kenan; Kara, Alpagut; At, Nuray (2013)Electronic Support Measures (ESM) plays an important role in modern Electronic Warfare (EW) systems. The main purpose of an ESM system is to intercept as many emissions as it can, and then to deinterleave mixed streams of ... -
Development of a multipurpose tile body: Phase and microstructural development
Kara, Alpagut; Özer, Fahri; Kayacı, Kaan; Özer, Pınar (Elsevier Sci LTD, 2006)In this study, an attempt was made in order to develop a multipurpose tile body using a single formulation. In order to achieve this, several body recipes were prepared using mainly local raw materials with clearly defined ... -
Development of laminar type functionally graded SiAlON ceramics
Çalış, N; Kara, Alpagut; Kara, Ferhat; Mandal, Hasan (Trans Tech Publications LTD, 2004)In order to combine high hardness with high toughness, laminar type (two layers) functionally graded (FGM) SiAlON ceramics were developed. In a previous study achieved by the same authors, presence of a sharp transition ... -
Development of using local raw materials deposits in Eskisehir region, Turkey
Daday, Mustafa; Kara, Alpagut (Australian Ceramic Society, 2017)Local clayey raw materials and feldspathic rocks of Eskisehir sources were characterized, and its influence in facade cladding tile compositions was evaluated. Dilatometric studies for disclosing peak firing temperatures ... -
Development strategies for sialon ceramics
SiAlON ceramics have a wide range of applications due to their favorable mechanical and thermal properties. They are one of the main groups of materials being considered for high temperature load bearing applications and ... -
Effect of alkaline-earth oxides on firing behaviour of monoporosa wall tile bodies
Cengiz, Özgür; Kara, Alpagut (Korean Assoc Crystal Growth, Inc, 2018)For the production of ceramic wall tiles, effective sintering has become increasingly important in recent years to reduce firing times and/or peak firing temperatures and thus cope with high energy costs and environmental ... -
The effect of boron waste in phase and microstructural development of a terracotta body during firing
Kurama, Semra; Kara, Alpagut; Kurama, H (Elsevier Sci LTD, 2006)In the present study, a dewatering sieve waste (TSW) of Etibor Kirka Borax company (Turkey) was employed in different amounts in order to develop an experimental terracotta floor tile body composition in combination with ...