Fakülteler by Institution Author "Kara, Alpagut"
Now showing items 21-40 of 62
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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 ... -
Effects of Alumina and White Fused Alumina Addition on Transparent Wall and Floor Tile Glazes
Yıldız, B.; Öztürk, Z. B.; Kara, Alpagut (Polish Acad Sciences Inst Physics, 2015)In tile manufacturing, alpha-Al2O3 is the main type of alumina used in ceramic body and glaze formulations. This raw material acts as an pacifier in porcelain tile bodies and as a matting agent in glazes. White fused alumina ... -
Influence of type of cations on intergranular phase crystallisation of SiAlON ceramics
Açıkbaş, N. Çalış; Kara, Alpagut; Turan, Servet; Kara, Ferhat; Mandal, Hasan; Bitterlich, B. (Trans Tech Publications LTD, 2007)25 alpha:75 beta SiAION composition was designed with different cations and at different molar ratios. Effect of the type of cations both on the composition and the type of intergranular phase investigated after gas pressure ... -
Interactions between a bismuth type leadless glaze and a bone China body during glost firing
Kara, Alpagut; Stevens, R (Trans Tech Publications LTD, 2004)In the present study, the interactions between a high bismuth type commercial transparent leadless glaze and a biscuit fired bone china body during glost firing at different temperatures were investigated using SEM. The ... -
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 into bloating behaviour of bone China body during biscuit firing
Kara, Alpagut (Trans Tech Publications LTD, 2004)Amongst many studies on the textural, mineralogical and physical changes during biscuit firing of whiteware bodies, this paper attempts to investigate the bloating behaviour of a commercial bone china body during biscuit ... -
Investigation of borax waste behaviour in tile production
Kurama, Semra; Kara, Alpagut; Kurama, H. (Elsevier Sci LTD, 2007)Although there are various studies published in the relevant literature on the use of borates in tile production, borax waste has been mainly used in place of feldspar and the results showed that borate migration to the ... -
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 of sanitaryware scrap behaviour in terracotta bodies
Kara, Alpagut; Işık, I; Uz, V; Sayarer, G (Trans Tech Publications LTD, 2004)In this paper, an investigation into a potential use of unfired body scrap from a local sanitaryware manufacturer in commercial terracotta production was presented. Experiments were achieved under laboratory conditions by ... -
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 ... -
Joining of SiAlON ceramics to pyrex glass
Kalemtaş, Ayşe; Kara, Alpagut; Kara, Ferhat; Mandal, Hasan; Aktug, B (Belgian Ceramic Society, 2004)In the present study, pressureless joining of gas pressure sintered (alpha-beta)-SiAlON ceramics to pyrex glass was investigated. Preoxidized SiAlON ceramics were used to enhance wettability and provide chemical compatibility ... -
Life Cycle Assessment and Life Cycle Cost Analysis of Magnesia Spinel Brick Production
Özkan, Aysun; Günkaya, Zerrin; Tok, Gülden; Karacasulu, Levent; Metesoy, Melike; Banar, Müfide; Kara, Alpagut (MDPI AG, 2016)Sustainable use of natural resources in the production of construction materials has become a necessity both in Europe and Turkey. Construction products in Europe should have European Conformity (CE) and Environmental ... -
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 ... -
Micronizing ceramic pigments for inkjet printing: Part II. Effect on phase composition and color
Zanelli, Chiara; Güngör, Gülsen L.; Kara, Alpagut; Blosi, Magda; Gardini, Davide; Guarini, Guia; Dondi, Michele (Elsevier Sci LTD, 2015)Drop on demand ink-jet printing is turning to be the leading technique in the decoration of ceramic tiles. This technology makes use in most cases of pigmented inks which are manufactured by micronizing conventional ceramic ... -
New wavelet-based features for the recognition of jittered and stagger PRI modulation types [Titrek ve atlamali DTA modülasyon tiplerinin taninmasina yönelik dalgacik tabanli yeni öznitelikler]
Gençol, Kenan; Kara, Alpagut; At, Nuray (Institute of Electrical and Electronics Engineers Inc., 2015)In dense electronic warfare environments, numerous emitters can be active simultaneously and an interleaved stream of pulses in natural time of arrival order is received by the Electronic Support Measures (ESM) receiver. ... -
A novel approach for preparing electrically conductive alpha/beta SiAlON-TiN composites by spark plasma sintering
Ayas, Erhan; Kara, Alpagut; Kara, Ferhat (Ceramic Soc Japan-Nippon Seramikkusu Kyokai, 2008)An effective approach for preparing electrically conductive SiAlON-TiN composites have been developed. Granules of a designed composition of alpha-beta SiAlON were obtained by spray drying and coated with varying amounts ...