Publication: Titanyum Matrisli Titanyum Karbür Takviyeli Kompozitlerin Mikro Ark Oksidasyon İle Yüzey Modifikasyonu
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Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
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Bu çalışmada, toz metalurjisi yöntemlerinden sıcak izostatik presleme tekniği ile üretilmiş olan titanyum karbür takviyeli titanyum matrisli kompozitler 1300°C’de 150 dakika sinterlenmiş ve mikro ark oksidasyon (MAO) işlemine tabi tutulmuştur. Uygulanan sinterleme işlemi, sıcak preslenmiş duruma nazaran kompozitlerin yoğunluğunu azaltırken sertliği ve aşınma direncini arttırmıştır. Kompozitlerin MAO işlemi ile 5 mikron kalınlığında poroz, anataz ve rutilden oluşan oksit tabakasıyla kaplanması yüzeylerin biyoaktivitesini arttırmaktadır. Sertlik, aşınma direnci ve biyoaktivite gibi özellikler bir arada düşünüldüğünde, MAO işlemi uygulanmış olan %30 TiC takviyeli titanyum matrisli kompozit optimum özellikleri taşımaktadır
In this study, titanium carbide reinforced titanium matrix composites were produced via hot isostatic press technique. After isostatic hot pressing, composites were sintered at 13000C for 150 minutes and were subjected to micro arc oxidation process after sintering. Compared to hot isostatic press, sintering process reduced density of the composites while increasing hardness and wear resistance. Porous oxide layers were generated in the form of anatase and rutile, with 5 μm thickness on the surfaces of composites after the MAO process which makes the composites more bioactive. Depending on the hardness, wear resistance and bio-compatibility, optimum properties were obtained from the micro arc oxidized 30 % titanium carbide reinforced titanium matrix composite.
In this study, titanium carbide reinforced titanium matrix composites were produced via hot isostatic press technique. After isostatic hot pressing, composites were sintered at 13000C for 150 minutes and were subjected to micro arc oxidation process after sintering. Compared to hot isostatic press, sintering process reduced density of the composites while increasing hardness and wear resistance. Porous oxide layers were generated in the form of anatase and rutile, with 5 μm thickness on the surfaces of composites after the MAO process which makes the composites more bioactive. Depending on the hardness, wear resistance and bio-compatibility, optimum properties were obtained from the micro arc oxidized 30 % titanium carbide reinforced titanium matrix composite.
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Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2011
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2011
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2011
Subject
Titanyum, kompozit malzemeler, mikro ark oksidasyon, titanium, composite materials, micro arc oxidation