Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 2037, listelenen: 301-320
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Spark plasma sintering of Co-WC cubic boron nitride composites
(Elsevier Science BV, 2009)25 vol.% cubic boron nitride (cBN) added tungsten carbide (WC) powders containing 6 wt.% Co (WC-6Co) were densified by spark plasma sintering (SPS) technique under different experimental conditions and the effect of cBN ... -
The effects of sintering temperature on phase and pore evolution in porcelain tiles
(Elsevier Sci LTD, 2017)The phase and pore evolution of porcelain tiling against sintering temperature are investigated in this study. A standard porcelain tile composition was sintered at nine different temperatures between 1150 and 1230 degrees ... -
The effect of the wet-milling process on sintering temperature and the amount of additive of SiAlON ceramics
(Elsevier Sci LTD, 2010)In this study, nano-sized SiAlON powders were produced by wet milling at elevated speeds as a top-to-bottom process. Before the milling process, different milling times and mediums were performed for the determination of ... -
Improvement in the Oxidation Resistance of beta-SiAlON Ceramics Produced from Mechanically Milled Powders
(Trans Tech Publications LTD, 2012)In the present study the oxidation behavior of beta-SiAlON ceramics, which were produced from conventional and high energy mechanical milled powders, was investigated. High energy mechanically milled powders have lower ... -
A comparison of sintering techniques using different particle sized beta-SiAlON powders
(Elsevier Sci LTD, 2012)In the present study sintering behavior and mechanical properties of beta-SiAlON ceramics were investigated using different sintering techniques (gas pressured sintering (GPS), pressureless sintering and spark plasma ... -
Investigation of the influence of initial powder size on the optical properties of Dy-alpha-SiAlON ceramics fabricated by gas pressure sintering
(Elsevier Sci LTD, 2017)Translucent Dy3+ doped alpha-SiAlON ceramics were successfully fabricated by the gas pressure sintering (GPS) method. The efficacy of this sintering technique also the affects initial particle size on densification, final ... -
Textured alpha-SiAlON ceramics via templated grain growth
(Trans Tech Publications LTD, 2007)In this study, textured alpha-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 ... -
Resonant Inspection of Ceramic Tiles
(Trans Tech Publications LTD, 2013)For as long as there have been metal, steel and other materials, there have been methods and ways to inspect them. The efforts to improve these methods continue to be a work in progress. Non-destructive techniques are ... -
Role of alpha-SiAlON nuclei addition on the rod-like y-sm alpha-SiAlON formations
(Trans Tech Publications LTD, 2007)In this study, effect of seed addition on the microstructural development of Y-Sm alpha-SiAION system has been investigated. Besides using pre-produced rod-like alpha-SiAION seeds, growth in the glassy phase and harvested ... -
The Effect of Porosity and Glassy Phase Amount of Porcelain Tiles on Ultrasonic Velocity
(Australian Ceramic Society, 2015)Non-destructive testing (NDT) has been playing critical role in processing, testing and structural evaluation of materials. Ultrasonic testing is a widely used characterization method in non-destructive testing (NDT). The ... -
Design of Alternative Composite Material to Available Tractor Cabins
(Springer, 2016)All mobile machinery is at the risk of rolling over, depending on the machinery characteristics the need to protect operator from the risk of being injured or causing death due to rollover has been of prime importance in ... -
Optimization of the optical properties of alpha-SiAlON through a decrease in starting powder size
(Elsevier Sci LTD, 2015)In the present work, the effects of initial powder size on the sintering behavior and optical properties of Dy-alpha-SiAlON ceramics produced by the SPS technique are investigated. The powders were prepared using high ... -
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, ...
