Yazar "Çelik, Ali" için listeleme
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Carbon nanotube/boehmite-derived alumina ceramics obtained by hydrothermal synthesis and spark plasma sintering (SPS)
Zaman, Ali Can; Üstündağ, Cem B.; Çelik, Ali; Kara, Alpagut; Kaya, Figen; Kaya, Cengiz (Elsevier Sci LTD, 2010)Preparation, structure and properties of hydrothermally treated carbon nanotube/boehmite (CNT/gamma-AlOOH) and densification with spark plasma sintering of Al2O3 and CNT/Al2O3 nanocomposites were investigated. Hydrothermal ... -
Covid-19 döneminde Abd borsaları, altın fiyatları ve VIX endeksi ile Bitcoin ve Ethereum fiyatları arasındaki ilişkinin analizi
Koç, Abdilcelil; Çelik, Ali (Anadolu Üniversitesi, 2022)Çalışmanın amacı, 03.01.2020 ile 28.02.2022 dönemi için üretim araçlarındaki gelişmenin bir başka veçhesi olan dijitalleşme ile kripto paralara yönelimin hızlanmasının geleneksel borsalara alternatif olup olmayacağını ... -
Effect of heat treatment on green machinability of SiAlON compacts
Çelik, Ali; Yaman, Halil; Turan, Servet; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2014)SiAlON based ceramics are promising materials for wear applications such as wire extrusion dies, pipe bending rollers, etc. due to their outstanding mechanical properties both at high and low temperatures. To be able to ... -
Investigation on the performance of SiAlON ceramic drills on aerospace grade CFRP composites
Çelik, Ali; Lazoğlu, İsmail; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2015)Carbon fiber reinforced polymer (CFRP) composites are widely used in aircraft structure due to their outstanding physical and mechanical properties. Drilling is one of the most critical operation in the handling of CFRP ... -
Oxidation behavior of electrically conductive alpha/beta SiAlON composites with segregated network of TiCN
Çelik, Ali; Ayas, Erhan; Halil, Etem; Kara, Alpagut (Elsevier Sci LTD, 2012)The oxidation behavior of novel electrically conductive alpha/beta SiAlON composites with a continuous network of 2.5-10 vol% TiCN particulates was investigated. Composites, produced by coating spray dried granules with ... -
Processing, phase evaluation and mechanical properties of MoSi2 doped 4TaC-HfC based UHTCs consolidated by spark plasma sintering
Arianpour, Farzin; Golestanifard, Farhad; Rezaie, Hamidreza; Mazaheri, Mehdi; Çelik, Ali; Kara, Ferhat; Fantozzi, Gilbert (Elsevier Sci LTD, 2016)In this research, binary 4TaC-HfC based composites were consolidated using carbide materials and addition of 0-15 vol.% MoSi2 by means of spark plasma sintering at 2000 degrees C. The nearly full dense and monophase specimens ... -
Wear behavior of solid SiAlON milling tools during high speed milling of Inconel 718
Çelik, Ali; Alagac, Melike Sert; Turan, Servet; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2017)Machining of Inconel 718 is a challenging process because of high hot strength and hardness, high reactivity with the tool materials and low thermal conductivity of Inconel 718 alloy. Although SiAION ceramics in the form ... -
Wear on SiAlON ceramic tools in drilling of aerospace grade CFRP composites
Çelik, Ali; Lazoğlu, İsmail; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2015)Carbon fiber reinforced polymer (CFRP) composites are difficult to cut materials due to their anisotropic structure and extremely abrasive nature of the carbon fibers. The tool materials used for drilling of CFRP composites ...
