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

Yıl 2018, Cilt: 18 Sayı: 3, 807 - 819, 30.12.2018

Aysel Büyüksağiş Yusuf Kayalı

Öz

In this research, hydroxyapatite (HAP) has been coated on the Ti6A14V alloy surface by electrophoresis method. In this electrophoresis method, NH4H2PO4 is taken as P precursor and Ca (NO3)2.4H2O is taken as 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. The corrosion 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 method was not showed inhibition for preventing corrosion. The surface images of the samples were described by 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 samples that there is Ca, O and P on the surface. It is seen in XRD analysis of HAP coated samples that there are TiO2, HAP and calcium phosphate structures on the surfaces.

Anahtar Kelimeler

Electrophoresis, Hydroxyapatite, Corrosion, Ti6Al4V.

Kaynakça

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