Characterization and formation of bioactive hydroxyapatite coating on commercially pure zirconium by micro arc oxidation

Aktuğ, Salim Levent; Kutbay, Işıl; Usta, Metin

doi:10.1016/j.jallcom.2016.10.217

Cited by 44 publications

(22 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of those methods is through reinforcing materials such as zirconia oxide (ZrO 2 ), carbon nanotubes (CNTs), and titanium oxide (TiO 2 ) [11,[83][84][85][86][87]. On the other hand, several reported regarding the HAp-based coating showed the enhancement in adhesion strength approaching 70% greater compared to pure HAp coating [88].…”

Section: Electrochemical Depositionmentioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

View full text Add to dashboard Cite

The use of metallic biomaterials for replacement of biomedical implants has been traced back from the nineteenth century. These metallic biomaterials have been declared as clinical success as their mechanical properties that satisfy the prerequisite of the human bone. Nevertheless, critical issues of the materials when they are utilised as implants; including the releasing toxic and harmful metal ions through wear and corrosion processes after longer implantation. Besides that, the bonding strength between bone and implants itself is considered weak due to the diferent components of human bone and metal implants. Hence, developing hydroxyapatite (HAp) coating on metallic biomaterials is expected to overcome the problems faced by biocompatible metallic biomaterials. As far as this, various commercial techniques have been introduced to develop the HAp coating on metallic biomaterials. The techniques are including plasma-spraying method, sol-gel dip-coating, electrochemical deposition and high-velocity suspension plasma-spraying. The formation of HAp coating on metallic biomaterials improved the corrosion resistance together promoting its load-bearing ability and enhanced substrate-coating adhesion.

show abstract

Section: Electrochemical Depositionmentioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

View full text Add to dashboard Cite

show abstract

“…Also, at post-immersion in SBF, FTIR spectrum analysis results such as wave numbers, band modes, band assignments and phase were presented in Table 5. The band structures obtained on both surfaces at post-immersion in SBF are (PO 4 3− ), (C-C), (CO 3 (OH − ), respectively [22,43,[78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95]. The ATR-FTIR peaks of both surfaces verify the presence of (C-C) at 1403 cm −1 [43,[78][79][80], the presence of (OH − ) ion at 1641 cm −1 [43,78,79] and the presence of (Ti-O-Ti) in the regions of 3397-3448 cm −1 [43,[78][79][80].…”

Section: In Vitro Bioactivity Of the Coatingsmentioning

confidence: 99%

“…In addition to XRD spectra, the presence of TiO 2 structure on both surfaces are indicated by the bands of (C-C), (OH − ) and (Ti-O-Ti) on FTIR once again [43,[78][79][80]. The FTIR spectra curves on both surfaces refer to the presence of (PO 4 3− ) at 560 cm −1 [81][82][83] and 1026 cm −1 [83][84][85][86], the presence of (PO 4 3− ) at 962 cm −1 [83][84][85][86][87] and 1050 cm −1 [83][84][85][86][87], the presence of (P-H) in the regions of 1980 cm −1 [88][89][90][91][92][93] and 2302-2388 cm −1 [88][89][90][91][92][93] and the presence of (OH − ) at 3640-3742 cm −1 [88,[91][92][93][94]. The apatite and TCP structures formed on both surfaces at post-immersion in SBF are proved by the presence of (PO 4 3− ), (P-H) and (OH − ) bands on FTIR curves [81][82][83][84][85][86][87]…”

Section: In Vitro Bioactivity Of the Coatingsmentioning

confidence: 99%

Characterization, Bioactivity and Antibacterial Properties of Copper-Based TiO2 Bioceramic Coatings Fabricated on Titanium

Durdu

2018

Coatings

View full text Add to dashboard Cite

The bioactive and anti-bacterial Cu-based bioceramic TiO 2 coatings have been fabricated on cp-Ti (Grade 2) by two-steps. These two-steps combine micro-arc oxidation (MAO) and physical vapor deposition-thermal evaporation (PVD-TE) techniques for dental implant applications. As a first step, all surfaces of cp-Ti substrate were coated by MAO technique in an alkaline electrolyte, consisting of Na 3 PO 4 and KOH in de-ionized water. Then, as a second step, a copper (Cu) nano-layer with 5 nm thickness was deposited on the MAO by PVD-TE technique. Phase structure, morphology, elemental amounts, thickness, roughness and wettability of the MAO and Cu-based MAO coating surfaces were characterized by XRD (powder-and TF-XRD), SEM, EDS, eddy current device, surface profilometer and contact angle goniometer, respectively. The powder-and TF-XRD spectral analyses showed that Ti, TiO 2 , anatase-TiO 2 and rutile-TiO 2 existed on the MAO and Cu-based MAO coatings' surfaces. All coatings' surfaces were porous and rough, owing to the presence of micro sparks through MAO. Furthermore, the surface morphology of Cu-based MAO was not changed. Also, the Cu-based MAO coating has more hydrophilic properties than the MAO coating. In vitro bioactivity and in vitro antibacterial properties of the coatings have been investigated by immersion in simulated body fluid (SBF) at 36.5 • C for 28 days and bacterial adhesion for gram-positive (S. aureus) and gram-negative (E. coli) bacteria, respectively. The apatite layer was formed on the MAO and Cu-based MAO surfaces at post-immersion in SBF and therefore, the bioactivity of Cu-based MAO surface was increased to the MAO surface. Also, for S. aureus and E. coli, the antibacterial properties of Cu-based MAO coatings were significantly improved compared to one of the uncoated MAO surfaces. These results suggested that Cu-based MAO coatings on cp-Ti could be a promising candidate for biomedical dental implant applications.TiO 2 -based coatings have been suggested to improve corrosion resistance, bioactivity and biocompatibility of implant surfaces. They have recently received great attention for the biomedical applications owing to their more stable chemical composition [11,12]. TiO 2 were fabricated on cp-Ti by various surface coating methods including sol-gel [13], anodic oxidation [14], magnetron sputtering [15], electrophoretic deposition [16], acid etching [17,18], laser surface treatment [19], plasma spraying [20,21] and micro arc oxidation [22][23][24][25] etc. However, certain problems like non-homogenous structure, micro-structural control problems, micro-cracks formation, the presence of phase impurity, poor adhesion strength were observed in these methods except for MAO technique [26][27][28]. Thus, implant application areas of the coatings produced by these techniques are limited.Micro-arc oxidation (MAO) is one of the most applicable methods to deposit a porous and rough bioceramic layer on valve metals such as Ti, Al, Mg, and Zr surfaces [3,[29][30][31]. The MAO coating promotes bioacti...

show abstract

“…Plasma electrolytic oxidation (PEO), also called micro-arc oxidation (MAO), a new surface treatment technology [ 10 , 11 , 12 ], is attracting more and more attention. PEO technology is mainly used on aluminum [ 13 ], magnesium [ 14 , 15 ], titanium [ 16 , 17 ], and other metals [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Resistance of PEO Coatings Formed on KBM10 Mg Alloy Pretreated with Nd(NO3)3

Jun

et al. 2018

Materials

View full text Add to dashboard Cite

Plasma electrolytic oxidation (PEO) technique is one of the important methods used in the surface modification of magnesium alloys. In this paper, the ceramic coatings on pretreated KBM10 magnesium alloy with Nd(NO3)3 solution were prepared by PEO. The effects of Nd(NO3)3 solution concentration on the microstructure and corrosion resistance of PEO coatings on magnesium alloys were investigated by means of scanning electron microscopy (SEM), X-ray diffractometer (XRD), and electrochemical workstation. It was found that the surface of the coatings was porous after PEO, and element Nd could be deposited on the surface of the coatings by pretreatment and existed in the PEO coatings. The coating formed at Nd(NO3)3 solution concentration of 0.06 mol/L exhibited the best corrosion resistance among all the as-prepared coatings.

show abstract

Characterization and formation of bioactive hydroxyapatite coating on commercially pure zirconium by micro arc oxidation

Cited by 44 publications

References 41 publications

Hydroxyapatite-Based Coating on Biomedical Implant

Hydroxyapatite-Based Coating on Biomedical Implant

Characterization, Bioactivity and Antibacterial Properties of Copper-Based TiO2 Bioceramic Coatings Fabricated on Titanium

Microstructure and Corrosion Resistance of PEO Coatings Formed on KBM10 Mg Alloy Pretreated with Nd(NO3)3

Contact Info

Product

Resources

About