Yazar "Kara, Alpagut" için Makale Koleksiyonu listeleme
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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 ... -
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. ... -
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 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 ... -
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 ... -
Effect of earth alkaline oxides on firing behaviour of porcelain stoneware
Çiğdemir, G.; Kara, Alpagut; Kara, Ferhat (Techna Srl, 2010)Aim of this study was to investigate the relations between chemical composition and firing behaviour of porcelain stoneware formulations. The effects of magnesia and/or calcia incorporation in varying amounts into a standard ... -
Effect of heat treatment on green machinability of SiAlON compacts
Çelik, Ali; Yaman, Halil; Turan, Servet; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2014)SiAlON based ceramics are promising materials for wear applications such as wire extrusion dies, pipe bending rollers, etc. due to their outstanding mechanical properties both at high and low temperatures. To be able to ... -
Effect of sintering conditions and heat treatment on the properties, microstructure and machining performance of alpha-beta-SiAlON ceramics
Açıkbaş, N. Çalış; Yurdakul, Hilmi; Mandal, Hasan; Kara, Ferhat; Turan, Servet.; Kara, Alpagut; Bitterlich, B. (Elsevier Sci LTD, 2012)The properties of SiAlON ceramics are strongly affected by the composition and structure of the intergranular phase, which are controlled by dopants, sintering conditions and starting silicon nitride (Si3N4) powder ... -
Effect of spodumene addition on pyroplastic deformation of porcelain stoneware
Aydın, Tuna; Kara, Alpagut (Korean Assoc Crystal Growth, Inc, 2014)Lithium aluminosilicates, such as spodumene, have been used as raw materials in the production of thermal shock resistant whiteware and sanitaryware. The presence of spodumene causes enhancement of mullitization and imparts ... -
Interactions between a leadless glaze and a biscuit fired bone China body during glost firing - part III: effect of glassy matrix phase
Kara, Alpagut; Stevens, R (Elsevier Sci LTD, 2003)As the final part of the study, the interactions between a commercial leadless glaze and a simulated bone china body glass during glost firing at different temperatures have been investigated. Advanced techniques such as ... -
An investigation of Hellenistic period pottery production technology from Harabebezikan/Turkey
Issı, Ali; Kara, Alpagut; Alp, Ahmet Oğuz (Elsevier Sci LTD, 2011)Upper ancient Mesopotamia is a part of Southeastern Anatolia and irrigated by the Euphrates and Tigris rivers. It has several sites, ruins and monuments belonging to ancient civilizations. Among these, an ancient site ... -
An investigation of pottery production technology for the West Slope wares from Dorylaion (Eskisehir/Turkey)
Issı, Ali; Kara, Alpagut (Soc Espanola Ceramica Vidrio, 2013)Researches in the field of pottery production technology in ancient times, done in different settlements during the same period, may contribute to know relationships established within the different cultural communities. ... -
Investigation on the performance of SiAlON ceramic drills on aerospace grade CFRP composites
Çelik, Ali; Lazoğlu, İsmail; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2015)Carbon fiber reinforced polymer (CFRP) composites are widely used in aircraft structure due to their outstanding physical and mechanical properties. Drilling is one of the most critical operation in the handling of CFRP ... -
Micronizing ceramic pigments for inkjet printing: Part I. Grindability and particle size distribution
Güngör, Gülsen L.; Kara, Alpagut; Blosi, Magda; Gardini, Davide; Guarini, Guia; Zanelli, Chiara; Dondi, Michele (Elsevier Sci LTD, 2015)Inkjet printing is increasingly used to decorate ceramic tiles, with pigmented inks in most cases. These inks are manufactured by micronizing conventional ceramic pigments down to median diameters of 0.2-0.6 mu m. Although ...