Browsing by Author "Kara, Ferhat"
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A Comparative Study of SiAlON Ceramics
Mallik, Awadesh Kumar; Açıkbaş, Nurcan Çalış; Kara, Ferhat; Mandal, Hasan; Basu, Debabrata (Elsevier, 2012)Two different varieties of Si3N4 powders were used to prepare SiAlON ceramics. 100% b-Si3N4 was used from refractory grade powders (B1) and another purer 98% a-Si3N4 (50A) powder was used to prepare the SiAlON samples. ... -
Effect of sintering conditions and heat treatment on the properties, microstructure and machining performance of α-β-SiAlON ceramics
Açıkbaş, Nurcan Çalış; Yurdakul, Hilmi; Mandal, Hasan; Kara, Ferhat; Turan, Servet; Kara, Alpagut; Bitterlich, Bernd (Elsevier, 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 ... -
Influence of Beta-Si3N4 Particle Size and Heat Treatment on Microstructural Evolution of Alpha:Beta-SiAlON Ceramics
Açıkbaş, Nurcan Çalış; Kumar, Rudra; Kara, Ferhat; Mandal, Hasan; Basu, Bikramjit (Elsevier, 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 ... -
Processing of solid state sintered alpha-SiC ceramics with carbon-black addition
Çelik, Ali; Kara, Alpagut; Turan, Servet; Kara, Ferhat (IOP Publishing, 2019)The efficient removal of surface silica layer from SiC particles by the addition of carbon is required for solid state sintering (SSS) of SiC ceramics. While wax-based organics are generally utilized as carbon source in ... -
Wear Behavior of Solid SiAlON Milling Tools During High Speed Milling of Inconel 718
Çelik, Ali; Alağaç, Melike Sert; Turan, Servet; Kara, Alpagut; Kara, Ferhat (Elsevier, 2017)Machining of Inconel 718 is a challenging process because of high hot strength and hardness, high re-activity with the tool materials and low thermal conductivity of Inconel 718 alloy. Although SiAlONceramics in the form ...
