Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 1201-1220
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The production of beta-SiAlON ceramics with low amounts of additive, at low sintering temperature
(Elsevier Sci LTD, 2010)In the present work nano-sized powder of beta-SiAlON was produced using a wet milling process. Different milling times and mediums (methyl ethyl keton, ethanol and toluene as solvents, polyethyleneglicol, oleic acid, sodium ... -
Investigation properties of BaO/RO-Al2O3-R2O3-B2O3-SiO2 glass-ceramic sealants for solid oxide fuel cell
(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 ... -
Spark Plasma Sintering of Translucent Dy-Y Doped alpha-SiAlON: Study of Sintering Parameters Influence on the Optical Properties by Using Taguchi Method
(Polish Acad Sciences Inst Physics, 2017)The Taguchi approach was applied to optimize optical properties of Dy-Y doped alpha-SiAlON ceramics produced by spark plasma sintering technique. L'16 experimental design was formed according to orthogonal array. Four ... -
Densification of Sr-Mg doped SiAlONs with GPS and SPS
(Trans Tech Publications LTD, 2007)At temperature above 1200 degrees C, the thermal stability of alpha-SiAlON phases has been debated since 1992; however, it has been discussed if any alpha-SiAlON phase can be formed in Ce, La, Eu and Sr-doped SiAlON systems. ... -
Mineralogical technological of underclays and properties in Sile Region, Istanbul, Turkey
(Techna Srl, 2007)Sile Region, northeastern Istanbul, includes the most important underclay deposit of Turkey In the area, Upper Cretaceous calc-alkaline volcanic rocks are the major parent rocks of the Neogene sequence composed of plastic ... -
Wear properties of alpha- and alpha/beta-SiAlON ceramics obtained by gas pressure sintering and spark plasma sintering
(Elsevier Sci LTD, 2011)In this study, alpha- and alpha/beta-SiAlON materials, doped with Y(2)O(3) and Nd(2)O(3), were sintered using two different sintering processes: spark plasma sintering (SPS) and gas pressure sintering (GPS). The wear and ... -
Wear behaviour of alpha- and alpha/beta-SiAlON ceramics stabilized with Nd2O3 and Y2O3
(Elsevier Sci LTD, 2009)alpha- and alpha/beta-SiAlON compositions, doped with Y2O3 or Nd2O3, were densified by gas pressure sintering (GPS). The wear and mechanical properties of the materials were investigated and compared to beta-Si3N4 materials. ... -
The reaction kinetics of rice husk based cordierite ceramics
(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, ... -
The influence of different CaO source in the production of anorthite ceramics
(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 ... -
Using de-watering sieve waste of borax to enhance the properties of floor tile
(Minerals, Metals & Materials Soc, 2006)Incorporation of de-watering sieve waste of borax (TSW) from Etibor Kirka Borax Company (Turkey) on the mechanical and physical properties of a commercial floor tile composition was investigated. In order to achieve this ... -
An alternative composite approach to tailor the thermoelectric performance in SiAlON and SiC
(Elsevier Sci LTD, 2017)The thermoelectric properties of SiAlON and SiC based composites prepared by adding TiCN (5 and 10 vol.%) as a particulate or as a segregated three-dimensional network were investigated. Although the volume fraction of the ... -
Effect of activators and calcination on luminescence properties of akermanite type phosphors
(Natl Inst Science Communication-Niscair, 2015)Akermanite type Ca2MgSi2O7 phosphors activated with different types of rare earths have been synthesized through a solid state reaction method under weak reducing atmosphere and/or open atmosphere. The phase properties of ... -
Utilizing of borax solid wast es in roof tile and brick bodies
(Minerals, Metals & Materials Soc, 2006)Boron minerals are widely employed in various fields such as ceramic, glass, cement, metallurgy, etc. Although boron deposits of the world are limited, the production level of boron-based products is continuously increased. ... -
Use of borax solid wastes in diopside based glass-ceramic floor tile glazes
(Minerals, Metals & Materials Soc, 2006)Boron raw materials are amongst the most important natural sources for many industrial branches and their values become increasingly raised with the discovery of boron usage in many new technological fields. All the countries ... -
Usability of industrial ashes in cement production as pozzolanic materials
(Minerals, Metals & Materials Soc, 2006)In the present study the utilization of coal ashes that appear at the end of firing process of brick production in cement pastes was examined. Ashes with three different particle sizes of 75 gm, 106 pm and 150 gm were used ... -
Utilization of refractory brick wastes in concrete production as aggregates
(Minerals, Metals & Materials Soc, 2006)The refractory bricks of a rotary cement furnace containing of alumina and magnesium chromite were studied in order to determine whether they could be used in the concrete production as aggregates. Three mortars were ... -
Sintering, microstructure, mechanical, and antimicrobial properties of HAp-ZnO biocomposites
(Wiley-Blackwell, 2010)The implant associated infection is widely considered as a major concern in the field of biomedical applications and this has been the driving force for developing HAp-based biomaterials with antibacterial additives for ... -
Hybrid processing and anisotropic sintering shrinkage in textured ZnO ceramics
(Natl Inst Materials Science, 2010)We have studied the combined effects of the templated grain growth and magnetic alignment processes on sintering, anisotropic sintering shrinkage, microstructure development and texture in ZnO ceramics. Suspensions of 0-10 ... -
The use of metarhyolites in porcelain stoneware production, Ilgin-Konya area, Turkey
(Techna Srl, 2010)The aim of this study is to determine the properties of metarhyolites from Konya (Turkey) area and to decide whether or not metarhyolites are suitable as a flux agent for porcelain stoneware tile production For this aim, ... -
A novel approach for synthesis of monticellite based bioactive ceramic powders from boron derivative waste
(Elsevier Science BV, 2017)Monticellite bioactive ceramics have a high usage potential as bone graft substitutes due to their superior mechanical properties compared to hydroxyapatite and excellent bioactivity. Turkey has almost 72% of the global ...
