Effects of HA-Coating on the Surface Morphology and Corrosion Behavior of a Co-Cr-Based Implant in Different Conditions

Kheimehsari, Hirbod Maleki; Izman, S.; Shirdar, Mostafa Rezazadeh

doi:10.1007/s11665-015-1517-y

Cited by 29 publications

(9 citation statements)

References 41 publications

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“…Figure 1 shows the comparison of the XRD patterns for the CHAp coatings obtained at different processing conditions. The results summarized in the article [69] revealed that the coating derived [71][72][73][74][75][76][77][78][79][80][81][82][83]. The sol-gel chemistry routes have been developed to prepare calcium hydroxyapatite thin films on titanium, silicon, silica and stainless steel substrates by dip-coating and spin-coating techniques.…”

Section: Sol-gel Synthesis Using Organic Precursorsmentioning

confidence: 99%

Sol–gel synthesis of calcium phosphate-based coatings – A review

Ishikawa

Kareiva²

2020

chemija

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Calcium phosphate (CP)-based biomaterials, especially nanostructured ones, show a high biocompatibility and increased biological properties. The coatings composed of stoichiometric hydroxyapatite have been extensively used to improve integration of metallic implants in the host bone. However, these coatings exhibited several drawbacks that limited their successful application. It was concluded in numerous articles that the sol–gel derived coatings can undergo cracking and delamination and are scarcely uniform. In this review article the recent advances on the sol–gel synthesis of different phosphate coatings and thin films are summarized. The attention is paid to coatings and thin films of calcium hydroxyapatite (CHAp), other phosphates, bioglasses and different composite materials. The state of the art, limitations, potentialities, open challenges, and the future scenarios for the application of CP bioceramics are highlighted in this study.

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Section: Sol-gel Synthesis Using Organic Precursorsmentioning

confidence: 99%

Sol–gel synthesis of calcium phosphate-based coatings – A review

Ishikawa

Kareiva²

2020

chemija

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“…The surface-dependent protein adsorption, cellular adhesion and biomineralization of HAp have great impact on the bone growth and repair processes. 6,7 Thus, many studies [8][9][10][11][12][13][14][15][16][17][18] have been devoted to the HAp surface structure including its morphology, surface energy, charge, crystallinity and stoichiometry. Using nuclear magnetic resonance NMR spectroscopy, Jager et al 13 and Osman et al 14 explored the surface structure of HAp nanocrystals and found that neither composition nor structure in the surface layer is same as that in the bulk crystal.…”

Section: Introductionmentioning

confidence: 99%

Probing the surface structure of hydroxyapatite through its interaction with hydroxyl: a first-principles study

et al. 2018

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Understanding the interaction of the hydroxyapatite (HAp) surface with hydroxyl originating from either the alkalescent physiological environment or HAp itself is crucial for the development of HAp-based biomaterials. Periodical density functional theory calculations were carried out in this study to explore the interaction of the HAp (100), (010) and (001) facets with hydroxyl. Based on a comparison study of Ca-rich, PO 4 -rich and Ca-PO 4 -OH mixed surfaces, the interaction pattern, interaction energy and effect of an additional water molecule on the Ca-OH interaction were comprehensively studied. The formation of CaOH on the Ca-rich surface was energetically favored on (100) and (001), while Ca(OH) 2 was energetically favored on (010). The Ca-water interaction was competitive, but had lower interaction energy than Ca-OH. Furthermore, Ca-O bonding and its influence on the OH stretching vibration were analyzed. Our calculations suggest that the hydroxyl-coated surface structure is more appropriate than the commonly used Ca-terminated surface model for studying HAp surface activity in its service environments.

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“…Usually, solÀgel technique is utilised to synthesise the nano-to-micro particles of HA in crystal structures. [12,13] However, HA ceramic suffers relatively poor mechanical properties which impede its usage in long-term load-carrying applications. [14,15] Some attempts have been made to enhance the mechanical properties of HA by implementing fillers such as bio-inert ceramics like alumina, [16] zirconia [17] and titania [18] as well as other metals, polymer fibres and bioglass [19] in the HA matrix.…”

Section: Introductionmentioning

confidence: 99%

In situsynthesis of hydroxyapatite-grafted titanium nanotube composite

Shirdar

Taheri

Izman

et al. 2016

Journal of Experimental Nanoscience

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The present study is an investigation to demonstrate the effectiveness of in situ approach in the synthesis of hydroxyapatitegrafted titanium nanotube composite (HA-TNT). This method involves combining the process of HA solÀgel and rapid breakdown anodisation of titanium in a novel solution consisting of NaCl and N 3 PO 4 . This new synthesis approach produced a uniform dispersion of Anatase and Rutile phases of TiO 2 nanotubes with minimal agglomeration in the matrix of crystalline HA. The characterisation of homogenised HA-TNT composite was investigated via field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), transmission electron microscope (TEM) and X-ray diffraction (XRD). FESEM and TEM images indicated the nanostructure of composite with TiO 2 nanotube diameter of approximately 10 nm. XRD and EDS analyses confirmed the formation of HA crystalline with the Ca/P ratio of 1.58 and formation of Anatase and Rutile phase of TiO 2 nanotubes.

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Effects of HA-Coating on the Surface Morphology and Corrosion Behavior of a Co-Cr-Based Implant in Different Conditions

Cited by 29 publications

References 41 publications

Sol–gel synthesis of calcium phosphate-based coatings – A review

Sol–gel synthesis of calcium phosphate-based coatings – A review

Probing the surface structure of hydroxyapatite through its interaction with hydroxyl: a first-principles study

In situsynthesis of hydroxyapatite-grafted titanium nanotube composite

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