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Ti6Al4V Alaşımına Sol-Jel Yöntemi ile Yapılan Hidroksiapatit Kaplamalarda Dietanolaminin Kaplama Morfolojisine ve Korozyon Dayanımına Etkisi
2020
Journal:  
Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi
Author:  
Abstract:

Titanyum ve alaşımları, mekanik dayanımları ve biyotolerant yapıda olmaları nedeni ile biyomalzeme uygulamalarında tercih edilirler. Fakat insan vücudu içinde korozyona uğraması durumunda zararlı iyonların salınımına neden olabilirler. Hidroksiapatit ise seramik ve biyoaktif yapıda bir malzeme olup biyomalzemelerin korozyon dayanımlarını arttırmaya yönelik kaplama tabakası olarak kullanımı da mevcuttur. Bu çalışmada Ti6Al4V alaşımının korozyon dayanımını geliştirmek amacı ile sol-jel yöntemi kullanılarak hidroksiapatit kaplamalar yapılmıştır. Hazırlanan hidroksiapatit solüsyonlarına farklı oranlarda dietanolamin (DEA, C4H11NO2) eklenerek sol-jel prosesinde oluşması muhtemel olan çatlaklı yapılar kontrol edilmiş ve azaltılmaya çalışılmış ve kaplamanın genel morfolojisinde ve korozyon dayanımında meydana gelen değişikliklerin gözlemlenmesi amaçlanmıştır. Numuneler taramalı elektron mikroskobu (SEM-EDS) ve X-Işını kırınımı (XRD) kullanılarak analiz edilmiştir. Hazırlanan yapay vücut sıvısı içinde elektrokimyasal-potansiyodinamik korozyon testleri gerçekleştirilmiştir. Çalışmanın sonucunda DEA katkı oranının artması ile morfolojide çatlaklı yapıların azaldığı ve kaplama kalınlığının arttığı gözlemlenmiştir. DEA eklenmesinin korozyon dayanımını arttırdığı fakat DEA miktarındaki artışın korozyon dayanımını negatif etkilediği görülmüştür.

Keywords:

The Effect of Dietanolamin on Coverage Morphology and Corrosion Resistance in Hydroxiapatite Coverage made by the Left-Jel Method to the Ti6Al4V Alimentation
2020
Author:  
Abstract:

Titanium and its alloys are preferred in bio-malzeme applications because of their mechanical resistance and bio-tolerant structure. However, in case of corrosion within the human body, they can cause the release of harmful ions. Hydroxiapatite is a material in ceramic and bioactive structure and is also available for use as a cover layer for increasing corrosion resistance. In this study, hydroxyapathy coatings were made using the left-gel method in order to improve the corrosion resistance of the Ti6Al4V alloy. The broken structures that are likely to form in the left-gel process by adding dietanolamine (DEA, C4H11NO2) in different proportions to prepared hydroxyapathic solutions have been controlled and tried to reduce and the aim of observing changes in the overall morphology of coverage and corrosion resistance. The samples were analyzed using the scanned electron microscope (SEM-EDS) and the X-work breakdown (XRD). Electrochemical-potentiodynamic corrosion tests have been performed in the prepared artificial body fluid. As a result of the study, the increase in the contribution rate of DEA has seen a decrease in the broken structures in the morphology and an increase in the coating thickness. The addition of DEA has been shown to increase corrosion resistance, but the increase in the amount of DEA has been shown to have a negative impact on corrosion resistance.

Keywords:

Effect Of Dietanolamine On Coating Morphology and Corrosion Resistance In Hydroxyapatite Coatings Made By Sol-gel Method On Ti6al4v Alloy
2020
Author:  
Abstract:

Titanium and its alloys are preferred in biomaterial applications due to their mechanical strength and biotolerant structure. However, if they are corroded in the human body, they can cause the release of harmful ions. Hydroxyapatite is a ceramic and bioactive material, and it is also used as a coating layer for increasing the corrosion resistance of biomaterials. In this study, hydroxyapatite coatings were made using sol-gel method in order to improve the corrosion resistance of Ti6Al4V alloy. By adding different ratios of diethanolamine (DEA, C4H11NO2) to the prepared hydroxyapatite solutions, cracked structures that are likely to occur in the sol-gel process have been checked and tried to be reduced. It has been aimed to observe the changes in the overall morphology and corrosion resistance of the coatings. Samples were analyzed using scanning electron microscopy (SEM-EDS) and X-Ray diffraction (XRD). Electrochemical-potentiodynamic corrosion tests were carried out in the prepared simulated body fluid. As a result of the study, it was observed that the cracked structures and the coating thickness increased in morphology with the increase in the DEA contribution rate. It was seen that the addition of DEA increases the corrosion resistance, but the increase in the amount of DEA negatively affects the corrosion resistance.

Keywords:

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Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi

Field :   Mühendislik

Journal Type :   Ulusal

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Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi