Investigation of Antibacterial Properties of Ti6Al4V Implants Coated with Zinc-Added Materials by the Electrophoretic Method

Abstract

Implant materials are biomaterials that are placed within the body to support, repair, or completely replace the function of damaged or missing tissues. These materials must possess properties such as biocompatibility, corrosion resistance, mechanical strength, and biological stability. This study focuses on the preparation of zinc (Zn)-doped hydroxyapatite (HA) coatings on Ti6Al4V alloy implant materials using the electrophoretic deposition (EPD) method, and investigates the microstructural, chemical, and antibacterial properties of the resulting coatings. Various EPD parameters (30–90V, 90s) were tested to assess their effects on coating thickness, surface morphology, and bioactivity. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) analyses revealed that Zn doping improved the coating's density and homogeneity, enhanced surface roughness, and promoted apatite formation. Simulated Body Fluid (SBF) tests confirmed increased bioactivity in the Zn-doped samples. Additionally, antibacterial tests indicated that Zn doping imparted antimicrobial resistance to the coating.

Keywords

• Electrophoretic deposition (EPD)
• Bioactivity
• Antibacterial
• SBF
• Implant

Elektroforetik Yöntem İle Çinko Katkılı Malzemelerle Kaplanmış Ti6Al4V İmplantların Antibakteriyel Özelliklerinin İncelenmesi

Abstract

İmplant malzemeler, vücut içine yerleştirilerek hasarlı veya eksik dokuların işlevini desteklemek, onarmak ya da tamamen yerine geçirmek amacıyla kullanılan biyomalzemelerdir. Bu malzemeler; biyouyumluluk, korozyon direnci, mekanik dayanım ve biyolojik stabilite gibi özelliklere sahip olmalıdır. Bu çalışmada, Ti6Al4V alaşımı implant malzemeler üzerine elektroforetik biriktirme (EPD) yöntemiyle Çinko (Zn) katkılı Hidroksiapatit (HA) kaplamaların hazırlanmasını ve elde edilen kaplamaların mikroyapısal, kimyasal ve antibakteriyel özelliklerinin incelenmesini kapsamaktadır. EPD parametreleri (30-90 V, 90 sn) değiştirilerek kaplama kalınlığı, yüzey morfolojisi ve biyoaktivite üzerindeki etkileri araştırılmıştır. SEM-EDX analizleri Zn katkısının kaplama yoğunluğunu ve homojenliğini artırdığını, yüzey pürüzlülüğünü ve apatit oluşumunu desteklediğini göstermiştir. Sentetik vücut sıvısı (SBF) testleri, Zn katkılı numunelerde biyoaktivitenin arttığını doğrulamıştır. Antibakteriyel sonuçlarda ise Zn katkısının levha üzerindeki kaplamanın antimikrobiyal olarak dayanım gösterdiğini kanıtlamıştır.

Keywords

• Elektroforetik biriktirme (EPD)
• Biyoaktivite
• Antibakteriyel
• SBF
• İmplant

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