Hydroxyapatite coatings for biomedical applications deposited by different thermal spray techniques

Gadow, Rainer; Killinger, Andreas; Stiegler, N.

doi:10.1016/j.surfcoat.2010.03.059

Cited by 167 publications

(76 citation statements)

References 19 publications

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“…HVSFS technique could produce high-quality and low-thickness coatings especially when the layer thickness is below 50 μm [96,106]. The development of the system does indeed ill in the gap between conventional thermal spraying and thin-ilm technologies (PVD, CVD).…”

Section: High-velocity Suspension Plasma-sprayingmentioning

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

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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.

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Section: High-velocity Suspension Plasma-sprayingmentioning

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

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“…For this reason, HA is widely used to produce porous ceramics and to modify the surface of titanium implant alloy by coating. [10][11] However, the study about Ti alloys containing bioceramics such as HA was not clarified until now, because it is hard to fabricate with ingot casting due to density of Ti and HA. In this study, Ti-26%Nb-1%Si-(10%HA) composites were fabricated by spark plasma sintering(SPS) using various milled powders for improving mechanical pro-perties, coating ability and biocompatibility.…”

Section: -9)mentioning

confidence: 99%

Microstructure and Biocompatibility of Ti-Nb-Si-HA Composites Fabricated by Rapid Sintering Using HEMM Powders

Woo¹,

Kim²,

Kang³

et al. 2013

Korean. J. Mater. Res.

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To improve coating ability and the life of the coating, Ti based composite materials with hydroxyapatite(HA) should be developed. The raw materials of Ti-26wt%, Nb-1wt%, and Si with 10wt% HA were mixed for 24 h by a mixing machine and milled for 1 h to 6 h by planetary mechanical ball milling. Ti-26%Nb-1%Si-(10%HA) composites, composed of nontoxic elements, were fabricated successfully by spark plasma sintering(SPS) at 1000 o C under 70 MPa. The relative density of the sintered Ti-Nb-Si-HA composites using the 24 h mixed powder, and the 6 h milled powder, was 91 % and 97 %, respectively. The effects of HA contents and milling time on microstructure and mechanical properties were investigated by SEM and hardness tester, respectively. The Vickers hardness of the composites increased with increasing milling time and higher HA content. The Young's modulus of the sintered Ti-26%Nb-1%Si-10%HA composite using the 6 h-milled powder was 55.6 GPa, as obtained by compression test. Corrosion resistance of the Ti-26wt%Nb-1wt%Si composite was increased by milling and by the addition of 10wt%HA. Wear resistance was improved with increasing milling time. Biocompatibility of the Ti-Nb-Si alloys was improved by the addition of HA.

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“…The most common way for providing the high hard-tissue compatibility is coating of hydroxyapatite (HAp: Ca 10 (PO 4 ) 6 -(OH) 2 ) on the surface of metal, which is a component of human bone. HAp films have been fabricated by various dry and wet processes, such as plasma spraying, 710) thermal spraying, 11) sputtering, 12,13) chemical vapor deposition, 14) the sol-gel method, 1518) and others. Among these processes, the sol-gel methods achieves good adhesion of HAp films on the surface of implants made of Ti and Ti alloys, for which a long-term usage is required.…”

Section: Introductionmentioning

confidence: 99%

“…The adhesive strength of HAp films on the surface of implants have been evaluated by various methods according to ASTM C633, 9) ASTM F1147-05, 7) and ISO 4624. 11) There are many researches who have studied on the adhesive strength of HAp films, but only few researches have studied on the effect of the body environment on the adhesive strength of HAp films. Water, inorganic ions, and proteins present in the human body may lead to the deterioration of HAp films.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Adhesion of Hydroxyapatite Films Fabricated on Biomedical β-Type Titanium Alloy after Immersion in Ringer’s Solution

et al. 2015

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The adhesive strengths between sol-gel fabricated hydroxyapatite (HAp) films and Ti29Nb13Ta4.6Zr alloy (TNTZ) were evaluated before and after immersion in Ringer's solution at 310 K for 7 d. The effect of the surface morphology of TNTZ on the adhesion of HAp films was also investigated. The fracture surfaces after adhesion tests were observed and fracture areas at the interface between HAp films and TNTZ were also evaluated before and after immersion in Ringer's solution. No significant differences in the adhesive strengths between HAp films and TNTZ disks with mirror-polished and mechanically polished surfaces were found. The fracture area at the interface between HAp film and mirror-polished TNTZ disk increases after immersion in Ringer's solution, whereas no fracture occurs at the interface between HAp film and mechanically polished TNTZ disk before and after immersion in Ringer's solution. It is supposed that Ringer's solution penetrates along the cracks that are formed in the HAp films during calcination and the regions with weak adhesion between HAp and TNTZ are connected during immersion in Ringer's solution in the case of HAp films fabricated on mirror-polished TNTZ. From these results, it is found that a relatively rougher surface is effective in improving the adhesion of HAp films fabricated on TNTZ before and after immersion in Ringer's solution.

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Hydroxyapatite coatings for biomedical applications deposited by different thermal spray techniques

Cited by 167 publications

References 19 publications

Hydroxyapatite-Based Coating on Biomedical Implant

Hydroxyapatite-Based Coating on Biomedical Implant

Microstructure and Biocompatibility of Ti-Nb-Si-HA Composites Fabricated by Rapid Sintering Using HEMM Powders

Evaluation of Adhesion of Hydroxyapatite Films Fabricated on Biomedical β-Type Titanium Alloy after Immersion in Ringer’s Solution

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Hydroxyapatite coatings for biomedical applications deposited by different thermal spray techniques

Cited by 167 publications

References 19 publications

Hydroxyapatite-Based Coating on Biomedical Implant

Hydroxyapatite-Based Coating on Biomedical Implant

Microstructure and Biocompatibility of Ti-Nb-Si-HA Composites Fabricated by Rapid Sintering Using HEMM Powders

Evaluation of Adhesion of Hydroxyapatite Films Fabricated on Biomedical &beta;-Type Titanium Alloy after Immersion in Ringer&rsquo;s Solution

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Evaluation of Adhesion of Hydroxyapatite Films Fabricated on Biomedical β-Type Titanium Alloy after Immersion in Ringer’s Solution