Bildiri Koleksiyonu: Recent submissions
Now showing items 21-40 of 150
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Textured ?-SiAlON ceramics via templated grain growth
(2007)In this study, textured ?-SiAlON ceramic was produced by templated grain growth process. In order to enhance the alignment of the seeds, gated tape casting arrangement was utilized. Y-Ce codoped seeds were synthesized to ... -
Utilization of borax solid wastes in fast single-firing porcelain tile glass-ceramic glazes under industrial working conditions
(2008)In this investigation, the wastes of Eti Maden Kirka Boron Company of Turkiye were evaluated in the production of diopside and anorthite-based glass-ceramic glazes suitable for porcelain tiles fast and single-fired under ... -
Investigation of PM parameters' effect on architecture of titanium foams using X-ray microtomography
(European Powder Metallurgy Association (EPMA), 2010)Titanium foams have been of interest in dental and orthopedic implants over the past few decades on account of their excellent mechanical properties, chemical stability, and biocompatibility. In this study, titanium foams ... -
?/ß SiAlON based composites incorporated with MoSi2 for electrical applications
(2010)Electrically conductive ?-ß 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 properties ... -
Preparation of cordierite ceramics from talc with boron oxide addition
(2004)Thermal reactions of impure materials of talc, silica and alumina with moderate particle sizes were investigated to obtain a dense cordierite ceramic by boron oxide addition as a sintering aid. Mixed powders were uniaxially ... -
Synthesis of the CeO2 based pigments by using enriched rare-earth oxides located at eskişehir kizilcaören region
(2004)Pigments based on CeO2 structure are known to give various pink-orange and red brown colour in ceramic glazes. This type of pigments is prepared by high temperature calcination of CeO2 and Pr 6O11 with admixed rare-earth ... -
The characterization and the utilization of the waste clays from gümüşköy silver mine in brick industry
(2004)In this study, the main characteristics and technological properties of the waste clays from silver deposit located in the northern part of Kutahya (mid-south of Turkey) are presented. The clays were characterized by X-ray ... -
Mg+2 and Ce+3 doped ?-SiAlON ceramics
(2004)In the present work, stabilization of MgO and CeO2 in ?-SiAlON structure is studied. Mg and CeO2 were used in 50:50 molar ratios as additives. The mixture was sintered at 1830°C for 1 hour in gas pressure sintering furnace ... -
Effect of different nucleation temperatures on the microstructural development of ?-SiAlON ceramics
(2004)?-SiAlON ceramics with elongated grains were previously observed in different studies. Sintering conditions are known to have a significant role on the microstructural development. By the nucleation treatment application ... -
Microstructural evolution R-?-SiAlON ceramics (R=Y, Y+Sm and Sm)
(2004)Yttrium or samarium doped ?-SiAlON composition was sintered using gas pressure sintering through two different sintering procedures. One group of samples was heated up to 1800°C and then held for 1h while another group of ... -
Formation of ?-SiAlON ceramics containing scandium
(2004)?-SiAlON is able to accommodate cations into its crystal structure if the cations are sufficiently small in size, thus helping to reduce the volume of the remnant grain boundary phase after processing. Lutetium with an ... -
Structural characterisation of Er-Si-Al-O-N glasses by Raman spectroscopy
(Elsevier Sci LTD, 2007)Er-Si-Al-O-N glasses have been prepared with cation ratio Er:Si:AI=3.45:3:2 containing various amounts of nitrogen (N=O, 5, 8, 15 and 22equiv.%). Glass properties such as microhardness, glass transition temperature and ... -
Chemical durability behaviour of bulk glasses in the Er-SiAlON system: Surface characterisation by SEM
(Trans Tech Publications LTD, 2004)Er-SiAlON glasses were produced by melting appropriate powder mixtures under nitrogen at 1715 degreesC using a cation ratio composition of Er:Si:Al = 3.45:3:2 and with varying nitrogen contents (N= 5 to 22 equivalent %). ... -
The characterization and the utilization of the waste clays from Gumuskoy silver mine in brick industry
(Trans Tech Publications LTD, 2004)In this study, the main characteristics and technological properties of the waste clays from silver deposit located in the northern part of Kutahya (mid-south of Turkey) are presented. The clays were characterized by X-ray ... -
The utilization of waste clay from coal basin in the wall tile body formulation
(Trans Tech Publications LTD, 2004)In this study, the waste clays extracted from coal basin were used as a wall tile ingredient instead of the clay materials of the standardized biscuit formulation of the wall tile. XRD data show that waste clay contains ... -
Evaluation of a natural stone with fluxing capability in stoneware glazes
(Trans Tech Publications LTD, 2004)New glaze systems have been continuously developed in order to supply certain advantages to ceramic bodies such as resistance against external thermal and mechanical forces and an aesthetic appearance as well as hygiene. ... -
Utilisation of a natural stone with fluxing ability in floor tile body as a Na-feldspar replacement
(Trans Tech Publications LTD, 2004)In 1960's the floor tile production of Turkey was started with a large use of K-feldspar as a fluxing agent. However, due to its limited deposits companies begun to employ Na-feldspar instead. At present, considerable level ... -
Effects of the red mud based pigment addition on the physical and micro-structural properties of porcelain tiles
(Trans Tech Publications LTD, 2004)In the production of conventional porcelain tiles colouring agents, being either in the form of pure oxides or pigments, are commonly and widely used at considerably high amounts to increase the attraction impact of final ... -
Producing cordierite from local magnesium sources
(Trans Tech Publications LTD, 2004)Cordierite ceramics were produced by using local magnesium sources. Mixtures were sintered at different temperatures to examine formation of cordierite. a-cordierite was formed as a major phase over 1150degreesC. High bulk ... -
Composition of products obtained via fast pyrolysis of olive-oil residue: Effect of pyrolysis temperature
(Elsevier Science BV, 2007)As an essential thermochemical process, pyrolysis is mainly dependent on temperature. Temperature affects mostly product distribution and composition. In this study, compositional analysis of the products obtained by thermal ...
