Oxide coating containing apatite formed on Ti-25Nb-25Ta alloy treated by Two-Step Plasma Electrolytic Oxidation

Published on Jan 25, 2020in Surface & Coatings Technology3.784
· DOI :10.1016/J.SURFCOAT.2019.125224
Bruno Leandro Pereira5
Estimated H-index: 5
(UFPR: Federal University of Paraná),
Gregory Beilner1
Estimated H-index: 1
(UFPR: Federal University of Paraná)
+ 7 AuthorsMichael J.D. Nugent13
Estimated H-index: 13
(Athlone Institute of Technology)
Sources
Abstract
Abstract Hydroxyapatite (HA) is a bioactive calcium phosphate capable of enhancing the implant/bone connection improving osteoconductivity and osseointegration process. However, the HA presents mechanical properties limiting its application. A good way to resolve this limitation is to combine the excellent biological properties of HA with materials with suitable mechanical behavior, like Ti-25Nb-25Ta alloy. The Ti-25Nb-25Ta alloy is composted by non-toxic and corrosion-resistant elements, presenting good biological compatibility. In this work, Plasma Electrolytic Oxidation (PEO) (using direct current-DC) was applied in conventional mode and Two-Step PEO aiming to produce a porous coating containing HA. It was not possible to produce a satisfactory coating applying conventional PEO due to successive spalling during the oxidation process. Adding a pretreatment to the conventional PEO changed the process to Two-Step PEO allowing to form a porous coating containing HA. The pretreatment was made by PEO using phosphoric electrolyte to produce a pre-coating. After that, the pre-coating was re-oxidized with calcium/phosphorus electrolyte. The Two-Step oxidized surface presented well-known good characteristics to applications in osseous implant devices such as porous formation, roughness in the micrometrical range, surface containing calcium and phosphorus, bioactive crystalline titanium oxide, and well-adhered HA formation. However, the coating morphology and chemical composition of pre-coating and Two-Step oxidized surfaces were not uniform. The non-uniformity of the Two-Step oxidized surface follows a similar non-uniformity pattern of the pre-coating surface. Two distinct morphologies were identified on the Two-Step oxidized surface: a “velvety morphology” with HA formation and a highly porous morphology. Regarding the Ti-25Nb-25Ta alloy, the Two-Step oxidation produced an adhered coating with porous apatite distribution interspersed with calcium-rich porous oxide.
📖 Papers frequently viewed together
2016
1 Author (Wing Kiu Yeung)
2 Citations
62 Citations
31 Citations
References49
Newest
#1Yulin Ge (HIT: Harbin Institute of Technology)H-Index: 4
#2Yaming Wang (HIT: Harbin Institute of Technology)H-Index: 38
Last. Yu Zhou (HIT: Harbin Institute of Technology)H-Index: 89
view all 8 authors...
Abstract Plasma electrolytic oxidation (PEO) coatings were formed, respectively in three silicate-based, phosphate-based and aluminate-based electrolytes on niobium, with the aim to explore the relationships between electrolyte composition, dielectric breakdown behavior and corresponding corrosion resistance. The initial growth stages of the anodic coatings were studied, and result shows that an impedance falling stage (from about 200 V to 400 V) starts at the emergence of spark discharge accomp...
11 CitationsSource
#1S. Lederer (De: DECHEMA)H-Index: 3
#2S. Sankaran (De: DECHEMA)H-Index: 1
Last. Wolfram Fürbeth (De: DECHEMA)H-Index: 16
view all 4 authors...
Abstract Hydroxyapatite-containing titanium oxide coatings were generated on novel CP-Ti grade 4+ alloys by plasma electrolytic oxidation (PEO) process in two Ca- and P-containing electrolytes. The coatings were obtained under direct current (DC) mode and unipolar pulsed mode at 10 Hz. The effect of the electrolyte composition and the electrical parameters on the coating's performance was investigated. The coatings were characterized with respect to morphology, thickness, and phase formation by ...
13 CitationsSource
#1Elham Ahounbar (AUT: Amirkabir University of Technology)H-Index: 2
#2Seyed Mohammad Mousavi Khoei (AUT: Amirkabir University of Technology)H-Index: 3
Last. Hamid Omidvar (AUT: Amirkabir University of Technology)H-Index: 19
view all 3 authors...
Abstract The biocompatibility properties of Ti scaffolds can be improved significantly by hydroxyapatite (HA) composite coating. We successfully coated the surface of the Ti substrates by in-situ formation of HA nanocrystals on TiO2 sublayer under calcium acetate and trisodium phosphate electrolytes through the plasma electrolytic oxidation (PEO) process. The effects of the process parameters and passivation on the characteristics of the coated substrates were studied using X–ray diffraction, Fo...
16 CitationsSource
#1Wan Sharuzi Wan Harun (Universiti Malaysia Pahang)H-Index: 14
#2R.I.M. Asri (Universiti Malaysia Pahang)H-Index: 3
Last. J.H.M. Shariffuddin (Universiti Malaysia Pahang)H-Index: 1
view all 7 authors...
Metallic biomaterials have been employed in replacing and reconstructing the structural parts of the human physical structure due to their high mechanical properties, superior biocompatibility, and high corrosion resistance. The most common metallic biomaterials that have been used in implants include magnesium, stainless steel, cobalt-based alloy, titanium, and titanium-based alloy. Hydroxyapatite (Ca10(PO4)6(OH)2) is one of the ceramic biomaterials considered as ideal materials for coating on ...
154 CitationsSource
#1Cristina Domínguez-Trujillo (University of Seville)H-Index: 5
#2E. PeónH-Index: 6
Last. Yadir Torres (University of Seville)H-Index: 23
view all 10 authors...
Abstract The stress shielding and the poor osseointegration in titanium implants are still problems to be resolved. In this context, this work proposes a balanced solution. Titanium samples were fabricated, with a porosity of 100–200 μm of pore size employing space-holder technique (50 vol% NH4HCO3, 800 MPa at 1250 °C during 2 h under high vacuum conditions), obtaining a good equilibrium between stiffness and mechanical resistance. The porous titanium substrates were coated with hydroxyapatite, ...
73 CitationsSource
#1Boyang Huang (University of Manchester)H-Index: 8
view all 6 authors...
The design of bioactive scaffolds with improved mechanical and biological properties is an important topic of research. This paper investigates the use of polymer-ceramic composite scaffolds for bone tissue engineering. Different ceramic materials (hydroxyapatite (HA) and β-tri-calcium phosphate (TCP)) were mixed with poly-e-caprolactone (PCL). Scaffolds with different material compositions were produced using an extrusion-based additive manufacturing system. The produced scaffolds were physical...
67 CitationsSource
#1Bruno Leandro Pereira (UFPR: Federal University of Paraná)H-Index: 5
#2Aline R. Luz (UFPR: Federal University of Paraná)H-Index: 4
Last. Neide K. Kuromoto (UFPR: Federal University of Paraná)H-Index: 13
view all 5 authors...
Abstract Niobium plates were electrochemically treated by Plasma Electrolytic Oxidation (PEO) with electrolytes containing phosphorous and/or calcium. Three different electrolyte and experimental parameters were used forming three different surfaces. Film morphology, thickness, and chemical composition were analyzed by scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). A profilometer and the sessile drop technique measured the average surfaces roughness (Ra) and contac...
21 CitationsSource
#1Bruno Leandro Pereira (UFPR: Federal University of Paraná)H-Index: 5
#2Carlos M. Lepienski (PUCPR: Pontifícia Universidade Católica do Paraná)H-Index: 4
Last. Neide K. Kuromoto (UFPR: Federal University of Paraná)H-Index: 13
view all 4 authors...
Abstract Plasma electrolytic oxidation (PEO) of niobium plates were done electrochemically in two steps with electrolytes containing phosphorous and calcium being observed the formation of crystalline apatite. All samples were submitted to a first step of PEO using an electrolyte containing phosphate ions. The second oxidization step was made using three different electrolytes. Some samples were oxidized by PEO in electrolyte containing calcium, while in other samples it was used two mixtures of...
22 CitationsSource
#1Maciej Sowa (Silesian University of Technology)H-Index: 13
#2Maja Woszczak (Silesian University of Technology)H-Index: 1
Last. Wojciech Simka (Silesian University of Technology)H-Index: 25
view all 10 authors...
Abstract This work aims to quantify the effect of anodization voltage and electrolyte composition used during DC plasma electrolytic oxidation (PEO), operated as a 2-step process, on the surface properties of the resulting oxide coatings on tantalum. The first step consisted of galvanostatic anodization (150 mA cm −2 ) of the tantalum workpiece up to several limiting voltages (200, 300, 400 and 500 V). After attaining the limiting voltage, the process was switched to voltage control, which resul...
28 CitationsSource
#1Salim Levent Aktug (GIT: Gebze Institute of Technology)H-Index: 10
#2Salih Durdu (Giresun University)H-Index: 7
Last. Metin Usta (GIT: Gebze Institute of Technology)H-Index: 21
view all 5 authors...
Abstract In the present work, hydroxyapatite (HAP)-based plasma electrolytic oxide (PEO) coatings were produced on zirconium at different current densities in a solution containing calcium acetate and β-calcium glycerophosphate by a single step. The phase structure, surface morphology, functional groups, thickness and roughness of the coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared spectroscopy (A...
45 CitationsSource
Cited By7
Newest
#1J. Alipal (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 4
#2T.C. Lee (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 2
Last. Maizlinda Izwana Idris (UTHM: Universiti Tun Hussein Onn Malaysia)H-Index: 9
view all 5 authors...
Abstract null null Anodised titanium has a long history as a coating structure for implants due to its bioactive and ossified surface, which promotes rapid bone integration. In response to the growing literature on anodised titanium, this article is the first to revisit the evolution of anodised titanium as an implant coating. The review reports the process and mechanisms for the engineering of distinctive anodised titanium structures, the significant factors influencing the mechanisms of its fo...
1 CitationsSource
#1Oktay Yigit (Fırat University)H-Index: 2
#2Niyazi Ozdemir (Fırat University)H-Index: 12
Last. Mosab Kaseem (Sejong University)H-Index: 21
view all 4 authors...
Nano-hydroxyapatite (nHA)-matrix coatings containing graphene nanosheets (GNS)-nHA were coated on Ti6Al7Nb alloys by plasma electrolytic oxidation (PEO) treatment for the improvement of their surface properties. Crystallographic properties, functional groups, and elemental analysis of coatings were characterized by XRD, ATR–FTIR, and EDS analysis. Surface morphological changes of the coated surfaces were investigated by AFM and SEM. The electrochemical corrosion behavior of the coatings was exam...
1 CitationsSource
#1Gregory Beilner (UFPR: Federal University of Paraná)H-Index: 1
#2Bruno Leandro Pereira (UFPR: Federal University of Paraná)H-Index: 5
Last. Michael J.D. NugentH-Index: 13
view all 11 authors...
Among titanium alloys with non-toxic elements, the Ti-25Nb-25Ta alloy has good elastic behavior for applications in osseous implants, biocompatibility, and excellent corrosion resistance. The present study aimed to better the biocompatibility characteristics of Ti-25Nb-25Ta alloy modifying its surface through Plasma Electrolytic Oxidation (PEO) treatment. The formed oxide coating is amorphous and composed of two distinct porous formations: smaller hole-shaped pores and larger volcano-like pores....
1 CitationsSource
Abstract A tailored porous ceramic layer of TiO2 was in-situ synthesized through Plasma Electrolytic Oxidation (PEO) process, using phosphate-based electrolyte at different applied voltages. The set-up was regulated to carry the process in low (430 V), medium (470 V), and high (510 V) voltages. The effects of applied voltage on the phase arrangement, microstructural, and morphological characteristics of the ceramic layer were then studied using X-ray diffraction, field emission scanning electron...
1 CitationsSource
#1Bruno Leandro Pereira (UFPR: Federal University of Paraná)H-Index: 5
#2Gregory Beilner (UFPR: Federal University of Paraná)H-Index: 1
Last. Michael J.D. Nugent (Athlone Institute of Technology)H-Index: 13
view all 10 authors...
Abstract Well-adhered nanotube arrays were produced through the anodizing technique on a Ti-25Nb-25Ta alloy and tribo-mechanically evaluated by nanoindentation and nanoscratch tests. Disregarding substrate effects, the hardness of the nanotube arrays layer was 0.7 ± 0.1 GPa and elastic modulus was
Source
#1A. Yanovska (Sumy State University)H-Index: 6
#2Ye. Husak (Sumy State University)H-Index: 1
Last. Maksym Pogorielov (Sumy State University)H-Index: 13
view all 12 authors...
Abstract A method of thermal deposition that involves localized high peak temperatures at the electrode-electrolyte interface was proposed for hydroxyapatite (HA) coatings deposition. Active surface layers were obtained by HA incorporation from the aqueous electrolyte into the substrate surface due to the decrease of HA solubility with increasing of substrate temperature. Commercially Ti-6Al-4V alloy (grade 4) substrates were pretreated by sandblasting combined with various chemical pre-treatmen...
1 CitationsSource
#1Ning-bo Li (UJN: University of Jinan)H-Index: 5
#2Sheng-jun Sun (SDU: Shandong University)H-Index: 2
Last. Yu-peng Lu (SDU: Shandong University)H-Index: 17
view all 9 authors...
Abstract Current development of nano/microscale modification technology of Ti-based implants was focused on the acceleration of ossification and consequent reduction of immunological rejection after implantation. Here, we rationally designed and produced the multistructures with microscale etched pits and nanodot-like oxide crystallites using, a two-step method, HF/HCl etching and induction heating treatment (IHT). IHT oxidation achieved the initially generating of nanocrystallites on the micros...
3 CitationsSource