Effect of hydroxyapatite/SiO 2 hybride coatings on surface morphology and corrosion resistance of REX-734 alloy

Say, Yakup; Aksakal, Bünyamin; Dikici, Burak

doi:10.1016/j.ceramint.2016.03.127

Cited by 34 publications

(12 citation statements)

References 16 publications

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“…One of the main advantages of electrophoretic deposition process is a possibility to obtain coatings with designed parameters such as thickness and homogeneity. Many studies have shown that it is possible to obtain hydroxyapatite or nanohydroxyapatite coating with thickness 3.71 µm to 35 µm and more [1,19,33,37]. It is clear that the hydroxyapatite ceramic is a brittle material and with the increasing thickness of the coatings the susceptibility to brittle cracking would increase.…”

Section: Resultsmentioning

confidence: 99%

“…The overcome to this problem may be could be the deposition of hydroxyapatite (HAp) Ca 10 (PO 4 ) 6 (OH) 2, which is the material of high biocompatibility due to it's structural and chemical similarities to inorganic part of the human bone and compatibility with surrounding tissues [18][19][20]. HAp coatings are often used in implants application because HAp causes better osseointegration of material, can increase bone growth thanks to its bioactivity and good biocompatibility and reduce high corrosion rate [17,20,21].…”

Section: Introductionmentioning

confidence: 99%

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The Determinants of Morphology and Properties of the Nanohydroxyapatite Coating Deposited on the Ti13Zr13Nb Alloy by Electrophoretic Technique

Bartmański

Berk

Wójcik

2016

Advances in Materials Science

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The titanium and its alloys belong at present to the most preferred and commonly applied biomaterials for loadbearing implants. The surfaces of biomaterials are subjected to modification, including the hydroxyapatite coatings deposited in order to ensure corrosion resistance and better joining between an implant and a bone through the possibility of ingrowth bone into the coating. In this paper, the morphology and properties of the nanohydroxyapatite coating deposited on the Ti13Zr13Nb flat surfaces using electrophoretic method are presented. Electrophoretic deposition at two different current values and two electrolytes (first -ethanol with nanoHAp, second -methanol with nanoHAp) was applied. The scanning electron microscopy examinations and wettability angle measurements showed an increase in the coating thickness, the surface coverage and decrease in biocompatibility with increasing voltage. The surface condition and biocompatibility of coatings were better when using methanol/nanoHAp solution as compared to the ethanol/nanoHAp one.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Determinants of Morphology and Properties of the Nanohydroxyapatite Coating Deposited on the Ti13Zr13Nb Alloy by Electrophoretic Technique

Bartmański

Berk

Wójcik

2016

Advances in Materials Science

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“…The speed of degradation also depends upon the chemical properties of HAp, Ca/P ratio, crystal size, crystallinity and porosity [88]. After this time, the malfunction (dissolution) can take place starting from the surface and penetrates down to the The adhesive force between metallic substrate and adhesive is classified into three types (i) specific adhesion, (ii) mechanical force, and (iii) efficient adhesion [78,79]. The specific adhesion arises due to the presence of attractive forces between dissimilar molecules whereas mechanical adhesion is associated with forces present due to penetration of adhesive inside the microstructures of a substrate.…”

Section: Existing Challenges In Coating For Metallic Biomaterialsmentioning

confidence: 99%

Current Challenges and Innovative Developments in Hydroxyapatite-Based Coatings on Metallic Materials for Bone Implantation: A Review

et al. 2020

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Biomaterials are in use for the replacement and reconstruction of several tissues and organs as treatment and enhancement. Metallic, organic, and composites are some of the common materials currently in practice. Metallic materials contribute a big share of their mechanical strength and resistance to corrosion properties, while organic polymeric materials stand high due to their biocompatibility, biodegradability, and natural availability. To enhance the biocompatibility of these metals and alloys, coatings are frequently applied. Organic polymeric materials and ceramics are extensively utilized for this purpose due to their outstanding characteristics of biocompatibility and biodegradability. Hydroxyapatite (HAp) is the material from the ceramic class which is an ultimate candidate for coating on these metals for biomedical applications. HAp possesses similar chemical and structural characteristics to normal human bone. Due to the bioactivity and biocompatibility of HAp, it is used for bone implants for regenerating bone tissues. This review covers an extensive study of the development of HAp coatings specifically for the orthopaedic applications that include different coating techniques and the process parameters of these coating techniques. Additionally, the future direction and challenges have been also discussed briefly in this review, including the coating of HAp in combination with other calcium magnesium phosphates that occur naturally in human bone.

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“…Different surface modification techniques and hybrid compositions are used in titanium implants to increase their surface bioactivity. These techniques include the sol-gel method [ 4 , 5 , 6 ], plasma spraying method [ 7 ], ion implantation [ 8 ], laser surface modification [ 9 ], electrophoretic deposition [ 10 ], anodic oxidation [ 11 ], ultrasonic method [ 12 ], biomimetic mineralization process [ 13 ], spark plasma sintering (SPS) [ 14 ], cold vacuum spray [ 15 ], hydrothermal method [ 16 ], and plasma electrolytic oxidation (PEO) [ 3 , 17 , 18 ]. The PEO is known as micro-arc oxidation and is used to produce ceramic coatings with various thicknesses and higher hardness on generally light metals and their alloys.…”

Section: Introductionmentioning

confidence: 99%

Surface Properties of Graphene Functionalized TiO2/nHA Hybrid Coatings Made on Ti6Al7Nb Alloys via Plasma Electrolytic Oxidation (PEO)

et al. 2021

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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 examined by using the potentiodynamic scanning (PDS) tests under in-vitro conditions in simulated body fluid (SBF). The results showed that the GNS was successfully deposited in ceramic matrix coatings on Ti6Al7Nb alloys. Also, the microstructural observations revealed that the coatings have a porous and rough structure. The XRD and ATR–FTIR quantitative analysis have proved the appearance of HA and GNS in the coating layers. An increase in the coating thickness, surface hardness, and anatase/rutile transformation rate was determined, while the GNS ratio in the coating layers was increased. The microhardness of the nHA coating reinforced with 1.5 wt% GNS was measured at 862 HV, which was significantly higher than that of GNS-free (only nHA) coating (584 HV). The best in-vitro resistance to corrosion in SBF was observed in the nHA/1.5GNS wt% coating.

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Effect of hydroxyapatite/SiO 2 hybride coatings on surface morphology and corrosion resistance of REX-734 alloy

Cited by 34 publications

References 16 publications

The Determinants of Morphology and Properties of the Nanohydroxyapatite Coating Deposited on the Ti13Zr13Nb Alloy by Electrophoretic Technique

The Determinants of Morphology and Properties of the Nanohydroxyapatite Coating Deposited on the Ti13Zr13Nb Alloy by Electrophoretic Technique

Current Challenges and Innovative Developments in Hydroxyapatite-Based Coatings on Metallic Materials for Bone Implantation: A Review

Surface Properties of Graphene Functionalized TiO2/nHA Hybrid Coatings Made on Ti6Al7Nb Alloys via Plasma Electrolytic Oxidation (PEO)

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