Publication: Titanyum Ve Alaşımlarının Biyouyumluluklarının İncelenmesi
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Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
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Bu çalışmada, CP-Ti, Ti6Al4V ve Ti6Al7Nb malzemelerine asitle dağlama ve ardından farklı sıcaklık ve sürelerde termal oksidasyon işlemi uygulanarak numunelerin biyoaktivite karakterizasyonları gerçekleştirilmiştir. Dağlama işleminde HF+HNO3 çözeltisi kullanılmış; termal oksidasyon işlemleri 400°C ve 600°C’de 1, 2 ve 4 saat sürelerde gerçekleştirilmiştir. İşlem görmüş numunelerin yüzey karakterizasyonları için mikroskobik incelemeler, yüzey pürüzlülüğü ve ıslatma açısı testleri; biyoaktivite karakterizasyonları için ise SEM, XRD ve EDS analizleri yapılmıştır. Biyoaktivite deneyleri sonucunda 400°C’de 1 saat termal oksidasyon uygulanan CP-Ti numunesi ile 400°C’de 4 saat termal oksidasyon uygulanan Ti6Al4V ve Ti6Al7Nb numunelerinde apatit oluştuğu gözlenmiştir. En yoğun apatit oluşumunun 400°C’de 4 saat termal oksidasyon uygulanan Ti6Al7Nb alaşımının yüzeyinde gerçekleştiği tespit edilmiştir.
In this study, investigation on bioactivity of CP-Ti, Ti6Al4V and Ti6Al7Nb alloys was carried out after acidic etching and thermal oxidation. HF+HNO3 solution was used for acidic etching and materials were thermally oxidized at 400°C and 600°C for 1,2 and 4 hours. Characterization of modified surface layers were carried out by means of microscopic examinations, surface roughness and contact angle tests and XRD, SEM, and EDS analysis also used for characterization of bioactivity. Apatite formation on surfaces of CP-Ti, which was oxidized at 400°C for 1 hours, and Ti6Al4V and Ti6Al7Nb, which were oxidized at 400°C for 4 hours, was determined. Ti6Al7Nb alloy exhibited best bioactivity after etching with HF+HNO3 solution and then oxidation at 400°C for 4 hours.
In this study, investigation on bioactivity of CP-Ti, Ti6Al4V and Ti6Al7Nb alloys was carried out after acidic etching and thermal oxidation. HF+HNO3 solution was used for acidic etching and materials were thermally oxidized at 400°C and 600°C for 1,2 and 4 hours. Characterization of modified surface layers were carried out by means of microscopic examinations, surface roughness and contact angle tests and XRD, SEM, and EDS analysis also used for characterization of bioactivity. Apatite formation on surfaces of CP-Ti, which was oxidized at 400°C for 1 hours, and Ti6Al4V and Ti6Al7Nb, which were oxidized at 400°C for 4 hours, was determined. Ti6Al7Nb alloy exhibited best bioactivity after etching with HF+HNO3 solution and then oxidation at 400°C for 4 hours.
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Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2007
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2007
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2007
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İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
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biyouyumluluk, titanyum alaşımları, termal oksidasyon, biocompatibility, titanium alloys, thermal oxidation
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