Kurum Yazarı "Mandal, Hasan" Makale Koleksiyonu İçin Listeleme
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A comparative study of SiAlON ceramics
Mallik, Awadesh Kumar; Acikbas, Nurcan Çalış; Kara, Ferhat; Mandal, Hasan; Basu, Debabrata (Elsevier Sci LTD, 2012)Two different varieties of Si3N4 powders were used to prepare SiAlON ceramics. 100% beta-Si3N4 was used from refractory grade powders (B1) and another purer 98% alpha-Si3N4 (50A) powder was used to prepare the SiAlON ... -
Cytocompatibility property evaluation of gas pressure sintered SiAlON-SiC composites with L929 fibroblast cells and Saos-2 osteoblast-like cells
Kumar, Alok; Mallik, Awadesh Kumar; Açıkbaş, Nurcan Çalış; Yaygingol, Merve; Kara, Ferhat; Mandal, Hasan; Basu, Bikramjit (Elsevier Science BV, 2012)Although the oxide ceramics have widely been investigated for their biocompatibility, non-oxide ceramics, such as SiAlON and SiC are yet to be explored in detail. Lack of understanding of the biocompatibility restricts the ... -
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 ?-ß SiAlON ceramics from different Si 3N4 starting powders
Açıkbaş, N. Çalış; Kara, Ferhat; Mandal, Hasan (2009)?-ß SiAlON ceramics were produced from different starting Si3N4 powders including P-Si3N4 and ?-Si3N4 powders and mixtures of these powders. Gas pressure sintering was used for sintering. After sintering, resultant fracture ... -
Effect of SiC addition on the thermal diffusivity of SiAlON ceramics
Akın, Seniz Reyhan Kushan; Turan, Servet; Gençoğlu, Pervin; Mandal, Hasan (Elsevier Sci LTD, 2017)Despite the fact that thermal conductivity is a crucial parameter for SiAlON ceramics with respect to their suitability in various applications, including high-temperature structural components, wear parts, and cutting ... -
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 ... -
Experimental and finite element study of the thermal conductivity of alpha-SiAlON ceramics
Kuşhan, Seniz Reyhan; Uzun, İbrahim; Doğan, Battal; Mandal, Hasan (Blackwell Publishing, 2007)The thermal conductivity of monolithic Y-Sm/alpha-SiAlON was evaluated using experimental data and finite element analysis. The thermal diffusivities of Y, Y-Dy, and Y-Ce/alpha-SiAlON ceramics were also investigated ... -
Fabrication of functionally graded SiAlON ceramics by tape casting
Açıkbaş, N. Çalış; Suvacı, Ender; Mandal, Hasan (Blackwell Publishing, 2006)Functionally graded SiAlON ceramics (FG-SiAlONs) were successfully prepared by the tape casting and lamination approach. Non-aqueous SiAlON slurries with five different alpha to beta-SiAlON ratios (85 alpha:15 beta, 70 ... -
Influence of beta-Si3N4 particle size and heat treatment on microstructural evolution of alpha:beta-SiAlON ceramics
Açıkbaş, N. Çalış; Kumar, R.; Kara, Ferhat; Mandal, Hasan; Basu, B. (Elsevier Sci LTD, 2011)In the present study, we report the effects of starting beta-Si3N4 particle sizes and post-sintering heat treatment on microstructure evolution and mechanical properties of prepared alpha-beta SiAlON ceramics. Three different ... -
Influence of SiC addition on tribological properties of SiAlON
Mallik, Awadesh Kumar; Reddy, K. Madhav; Açıkbaş, Nurcan Çalış; Kara, Ferhat; Mandal, Hasan; Basu, Debabrata; Basu, Bikramjit (Elsevier Sci LTD, 2011)The tribological properties of gas pressure sintered SiAlON and its composite with 18 wt% silicon carbide (SiC) against two different mating materials, i.e., alumina and SiAlON are evaluated. SiAlON and SiAlON-18%SiC ... -
Microstructure-Mechanical Properties-Wear Resistance Relationship of SiAlON Ceramics
Kumar, Ravi; Acikbas, N. Çalış; Kara, Ferhat; Mandal, Hasan; Basu, Bikramjit (Springer, 2009)In designing wear-resistant ceramics, it is important to understand the influence of the microstructure and material properties on friction and wear behavior. In addressing such issues, a series of fretting-wear tests was ... -
Production and permeability of porous Si 3 N 4 ceramics produced by starch addition
Topateş, Gülsüm; Petasch, U.; Adler, Joerg; Kara, Ferhat; Mandal, Hasan (Taylor and Francis Ltd., 2013)•We produce highly porous (up to 66%) Si 3 N 4 .•We enhance the permeability of Si 3 N 4 by using starch as pore former.•Increasing starch amount (?20vol.%) created large and bimodal pore channels and permeability values ... -
Role of organic additives on non-aqueous tape casting of SiAlON ceramics
Ceylan, Ali; Suvacı, Ender; Mandal, Hasan (Elsevier Sci LTD, 2011)Suspensions consisting of precursor alpha/beta SiAlON forming powders azeotropic solvent mixture of 60 MEK/40E dispersant binder, and plasticizer were optimized for tape casting by theological measurements and tape properties ... -
Spark plasma sintering of Co-WC cubic boron nitride composites
Yaman, Bilge; Mandal, Hasan (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 ... -
Sr2+-Mg2+-doped SiAlON ceramics
Kurama, Semra; Çiğdemir, G; Mandal, Hasan; Herrmann, M (Blackwell Publishing, 2006)In the present work, multi-cation-doped (Sr2+-Mg2+) SiAlON ceramics were investigated. MgO and SrO were used in 100:0 and 50:50 molar ratios. The mixture was sintered at 1800 degrees and 1830 degrees C for 1 h in a gas ... -
Thermal properties of pressureless melt infiltrated AlN-Si-Al composites
Kalemtaş, Ayşe; TopAteş, Gülsüm; Bahadır, Özlem; Kaya Isci, Pınar; Mandal, Hasan (Elsevier Science BV, 2013)Thermal properties of AlN-Si-Al composites produced by pressureless melt infiltration of Al/Al alloys into porous alpha-Si3N4 preforms were investigated in a temperature range of 50-300 degrees C. SEM and TEM investigations ...