INVESTIGATION OF WELDING CURRENT ON MECHANICAL AND CORROSION PROPERTIES OF TITANIUM-HYDROXYAPATITE TIG COATINGS ON TI-6AL-4V BİOMEDİCAL ALLOY

Muhammet Guman Özbey; Mehmet Topuz

doi:10.17780/ksujes.1805703

TR EN

Tİ-6AL-4V BİYOMEDİKAL ALAŞIMI ÜZERİNE TİTANYUM-HİDROKSİAPATİT TIG KAPLAMALARIN MEKANİK VE KOROZYON ÖZELLİKLERİ ÜZERİNE KAYNAK AKIMININ ARAŞTIRILMASI

Öz

Bu çalışmada, %5 hidroksiapatit (HA)-%95 titanyum (Ti) kompozit kaplamalar, Tungsten İnert Gaz (TIG) kaynak yöntemi kullanılarak 90A, 100A ve 110A kaynak akımlarında Ti-6Al-4V (Ti64) altlıklar üzerine üretilmiştir. Kaynak akımının mikroyapısal, mekanik, elektrokimyasal ve biyolojik özellikler üzerindeki etkileri sistematik olarak incelenmiştir. ASTM E190 eğme testlerine göre, arayüz yapışma mukavemeti artan kaynak akımıyla artmıştır. Elektrokimyasal in vitro korozyon testleri akıma sınırlı bağımlılık gösterdi, ancak 100 A kaplama en düşük korozyon akımı yoğunluğunu (6.93×10-2 μA·cm-2) ve en yüksek polarizasyon direncini (12800 Ω) sergiledi ve en pasif yüzey davranışını gösterdi. İn vitro simüle edilmiş vücut sıvısı (SBF) testleri, 90A kaplamanın optimum apatit benzeri tabaka oluşumunu desteklediğini gösterdi. Genel olarak, kaynak akımı kaplamaların mikro yapısını, kimyasal kararlılığını, mekanik dayanımını, korozyon direncini ve biyoaktivitesini güçlü bir şekilde etkiledi. Hepsi arasında, 90A yapısal kararlılık için, 100A elektrokimyasal performans için ve 110A mekanik yapışma için optimumdur. Bu nedenle, TIG kaynak işlemi metalik yüzeylerde biyofonksiyonel kaplamalar üretmek için umut verici bir yaklaşımdır.

Anahtar Kelimeler

INVESTIGATION OF WELDING CURRENT ON MECHANICAL AND CORROSION PROPERTIES OF TITANIUM-HYDROXYAPATITE TIG COATINGS ON TI-6AL-4V BİOMEDİCAL ALLOY

Abstract

In this study, 5% hydroxyapatite (HA)-95% titanium (Ti) composite coatings were fabricated on Ti-6Al-4V (Ti64) substrates using the Tungsten Inert Gas (TIG) welding method at welding currents of 90A, 100A, and 110A. The effects of welding current on the microstructural, mechanical, electrochemical, and biological properties were systematically investigated. According to ASTM E190 bending tests, interfacial adhesion strength increased with increasing welding current. Electrochemical in vitro corrosion tests showed limited dependence on current, though the 100A coating exhibited the lowest corrosion current density (6.93×10-2 μA·cm-2) and highest polarization resistance (12800 Ω), indicating the most passive surface behavior. In vitro simulated body fluid (SBF) tests demonstrated that the 90A coating promoted optimal apatite-like layer formation. Overall, the welding current strongly affected the coatings’ microstructure, chemical stability, mechanical strength, corrosion resistance, and bioactivity. Among all, 90A was optimal for structural stability, 100A for electrochemical performance, and 110A for mechanical adhesion. Thus, the TIG welding process is a promising approach for producing biofunctional coatings on metallic substrates.

Keywords

Proje Numarası

FYL-2024-11226

Teşekkür

The authors would like to thank Van Yuzuncu Yil University, Scientific Research Projects Coordination Unit (Project no: FYL-2024-11226) for the financial support of this study.

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Malzeme Tasarım ve Davranışları

Bölüm

Araştırma Makalesi

Yazarlar

Muhammet Guman Özbey
0009-0004-5575-0252
Türkiye

Mehmet Topuz ^*
0000-0003-3692-796X
Türkiye

Yayımlanma Tarihi

3 Mart 2026

Gönderilme Tarihi

17 Ekim 2025

Kabul Tarihi

1 Aralık 2025

Yayımlandığı Sayı

Yıl 2026 Cilt: 29 Sayı: 1

DOI

https://doi.org/10.17780/ksujes.1805703

IZ

https://izlik.org/JA77ZE86AM

Kaynak Göster

RIS / Bibtex

APA

Özbey, M. G., & Topuz, M. (2026). INVESTIGATION OF WELDING CURRENT ON MECHANICAL AND CORROSION PROPERTIES OF TITANIUM-HYDROXYAPATITE TIG COATINGS ON TI-6AL-4V BİOMEDİCAL ALLOY. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 29(1), 229-242. https://doi.org/10.17780/ksujes.1805703