Caracterización de la superficie de un recubrimiento EPD sobre la aleación de Mg AZ91 obtenida mediante Pulvimetalurgia

İbrahim Aydin; Ali İhsan Bahçepinar; Canser Gül

doi:10.3989/revmetalm.176

Authors

İbrahim Aydin Manisa Celal Bayar University, Vocational School of Technical Sciences, Machinery and Metal Technologies Department https://orcid.org/0000-0002-6281-4902
Ali İhsan Bahçepinar Manisa Celal Bayar University, Vocational School of Technical Sciences, Machinery and Metal Technologies Department https://orcid.org/0000-0002-9744-0146
Canser Gül Manisa Celal Bayar University, Engineering Faculty, Department of Metallurgical and Materials Engineering, https://orcid.org/0000-0002-1339-936X

DOI:

https://doi.org/10.3989/revmetalm.176

Keywords:

AZ91 Mg alloy, Coating, Electrophoretic deposition (EPD), Hydroxyapatite (HA), Powder Metallurgy (P/M)

Abstract

Intense implants which are used widely in biomedical applications such as Ti and its alloys and 316 L stainless steel can harm the surrounding tissues, hence may also cause infection. In order to eliminate this risk, it is necessary to produce new generation implant materials that are lighter than their existing biomaterials for use in biomedical applications and whose mechanical properties and structure are close to bone. In this study AZ91 Mg alloy implant material is created by using powder metallurgy method. In addition, in order to improve the bio-compatibility and bio-activity, the generated implant material was also coated with hydroxyapatite (HA) which is known as a ceramic based biomaterial. In this study, AZ91 Mg alloy is created by using powder metallurgy method. HA coating was applied to the alloy surface using the electrophoretic deposition method. The surface properties and corrosion resistance of the coatings made were examined. The applied voltage values in the coating process were determined as 100, 150, 200 and 250 V, the time parameter was stabilized as 2 minutes. HA, ethanol, polyvinyl alcohol (PVA), N, N-Dimethylformamide chemicals were used to prepare the coating solution. At the end of the study, microstructures of the coatings were examined by using scanning electron microscopy (SEM) and elemental analyzes (EDS) of the coating surfaces were performed. The X-ray diffraction method (XRD) was used to determine the phases of the coatings and its concentration. Coating thickness and surface roughness values were also determined. Corrosion behavior of coated samples was determined by potentiodynamic electrochemical potential corrosion test in artificial body fluid.

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References

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