Elektrokimyasal Biriktirme Yöntemi ile Hidroksiapatit (HAP) Kaplanmış Ti6Al4V İmplantlarının Korozyon Davranışlarının İncelenmes

Bu araştırmada, hidroksiapatit (HAP) elektroforez yöntemi ile Ti6A14V alaşımı yüzeyine kaplanmıştır. Elektroforez yönteminde HAP kaplama elde etmek için, NH 4 H 2 PO 4 , P öncüsü olarak ve Ca(NO 3 ) 2 .4H 2 O, Ca öncüsü olarak alınmıştır. Ek olarak, Ti6A14V'ye 5 N NaOH ön-muamele yüzey işlemi (PTSO) uygulanmıştır. PTSO, HAP kaplamanın yüzeye yapışmasında etkilidir. Kaplanmamış ve HAP kaplanmış numunelerin korozyon davranışları simüle vücut sıvısında (SBF) 7, 14, 21 ve 35 gün bekletildikten sonra incelenmiştir. Elektroforez yöntemiyle elde edilen HAP kaplamalar korozyonun önlenmesi için inhibisyon göstermemiştir. Numunelerin yüzey görüntüleri taramalı elektron mikroskobu (SEM), enerji saçınımlı X ışınları (EDX) ve X ışınları difraksiyonu (XRD) yöntemleri ile tanımlanmıştır. SEM görüntülerinden, açık gözenekler ve kaplamada gözenekler arasındaki bağlantılar gözlenmiştir ve bu da osteointegrasyonu arttırmaktadır. HAP kaplamalı numunelerin yüzeylerinin EDX analizlerinde yüzeyde Ca, O ve P olduğu not edilmiştir. HAP kaplamalı numunelerin XRD analizinde yüzeylerde TiO 2 , HAP ve kalsiyum fosfat yapılarının olduğu görülmektedir.

Investigation of Corrosion Behaviours Hydroxyapatite (HAP) coated Ti6Al4V Implants by Using Electrochemical Deposition Method

In this research, hydroxyapatite (HAP) has been coated on the Ti6A14V alloy surface by electrophoresismethod. In this electrophoresis method, NH 4 H 2 PO 4 is taken as P precursor and Ca (NO 3 ) 2 .4H 2 O is takenas Ca precursor to obtain HAP coating. Additionally, 5 N NaOH pre-treatment surface operation (PTSO)has been applied to Ti6A14V. PTSO are effective on clinging of HAP coating to the surface. Thecorrosion behaviours of uncoated and HAP coated samples are examined in simulated body fluid (SBF)after for holded 7, 14, 21 and 35 days in SBF. HAP coatings have obtained by electrophoresis methodwas not showed inhibition for preventing corrosion. The surface images of the samples were describedby scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX), and X-ray diffraction(XRD). From SEM images have been observed open pores and connections among pores in the coating,which increases osteointegration. It is noted in EDX analyses of the surfaces of the HAP coated samplesthat there is Ca, O and P on the surface. It is seen in XRD analysis of HAP coated samples that there areTiO 2 , HAP and calcium phosphate structures on the surfaces.

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