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Journals / Makine Teknolojileri Elektronik Dergisi (elektronik) / 2008 / Cilt: 5 - Sayı: 4

Mechanical properties of calcium-phospate coatings on Ti6Al4V implant materials by biomimetic method

Biyomimetik metot kulllanılarak kalsiyum-fosfat kaplanmış Ti6Al4V implant malzemelerin mekanik özellikleri

Ahmet PASİNLİ
Hasan YILDIZ
Erdal ÇELİK
R. Sami AKSOY
Pages
1–10
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was found that the coating structure was affected by solution concentrations.

📌 3 Key Takeaways

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Objective & Hypothesis:Hydroxyapatite and brushite are calcium phosphate (Ca-P) based bioceramics and mostly applied in clinics for making artificial bone due to its biocompatibility to be used in various prosthesis, treating cracks and fractures in the bone and coating of metallic biomaterials.
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Key Findings & Data:In this study, mechanical properties of Ca-P coatings on Ti6Al4V implant materials produced by biomimetic method were investigated.
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Conclusion & Impact:It was found that the coating structure was affected by solution concentrations.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Hydroxyapatite and brushite are calcium phosphate (Ca-P) based bioceramics and mostly applied in clinics for making artificial bone due to its biocompatibility to be used in various prosthesis, treating cracks and fractures in the bone and coating of metallic biomaterials. In this study, mechanical properties of Ca-P coatings on Ti6Al4V implant materials produced by biomimetic method were investigated. In this context, thin and continuous Ca-P coatings were first deposited onto Ti6Al4V implant plates by immersion in 1, 1.5 and 3 times concentrated simulated body fluid (SBF) at 37°C for 30 days at pH=7.4. The Ca-P layers were formed in the range of 6.5 and 18 μm thick. Prior to measurement of mechanical properties, the obtained coatings were characterized by XRD, optical microscope and SEM. The experimental results clearly demonstrate that Ca-P coatings were deposited on Ti-based substrates using the biomimetic approach. It was found that the coating structure was affected by solution concentrations. Surface roughness and dynamic microhardness of Ca-P coating and substrate were measured by surface roughness and ultra dynamic microhardness testers. Adhesion properties of the coatings were evaluated by using tensile, shear and scratch testers. It was found that the maximum adhesion strength was obtained in 1 SBF solution concentration coated specimens. Adhesion strength was affected by coating thickness depending on SBF concentration and surface roughness of the coatings considerably.

Özet

Hidroksiapatit [HA:Ca5(PO4)3(OH)] ve brushite kalsiyum fosfat esaslı bir biyoseramik olup, biyouyumluluğu nedeniyle yapay kemik olarak çesitli protezlerin yapımında, çatlak ve kırık kemiklerin onarımında ve metalik biyomalzemelerin kaplanmasında kulanılmaktadır. Bu çalısmada biyomimetik metot kulllanilarak kalsiyum-fosfat kaplanmis Ti6Al4V implant malzemelerin mekanik özellikleri arastırılmıstır. Öncelikle vücut sıcaklığı olan 37°C ve pH=7.4 sartlarında 1, 1.5 ve 3 kat hazırlanan Yapay Beden Sıvısı (YBS) içinde Ti6Al4V implant malzemeden hazırlanan plakalar 30 gün süre ile bekletilerek Ca-P’lı yapının yüzeyde olusması sağlanmıstır. 6.5 ile 18 μm arasında bir kalınlık elde edilmistir. Kaplamanın mekanik özellikler ölçülerek, karekterizasyonu XRD, optic ve taramalı elektron mikroskobu ile yapılmıstır. Deneysel çalısmada biyomimetik yöntem ile Ti esaslı malzemelerde Ca-P kaplamanın olustuğu gösterilmistir. Kaplama yapısına çözelti konsantrasyonu etki etmektedir. Yüzey pürüzlülüğü ve mikrosertlik değerleri ölçülmüstür. Kaplamanın yapısma dayanımı çekme, kesme ve çizme testlerine gore ölçülmüstür. Maksimum yapısma dayanımı 1 YBS’lik çözeltideki kaplamada elde edilmistir. Kaplama kalınlığı, YBS konsantrasyonu ve yüzey pürüzlülüğünün, kaplamanın yapısma dayanımını etkilediği tesbit edilmistir.

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Cite This Article

PASİNLİ, A., YILDIZ, H., ÇELİK, E., AKSOY, R. S. (2008). Mechanical properties of calcium-phospate coatings on Ti6Al4V implant materials by biomimetic method. Makine Teknolojileri Elektronik Dergisi (elektronik), Cilt: 5 - Sayı: 4, 1–10. https://ajindex.com/articles/282115

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