Characteristics of sintered HA coating deposited by chemical method on AISI 316L substrate

Ahmed, Aymen A.; Mhaede, Mansour; Wollmann, Manfred; Wagner, Lothar

doi:10.1016/j.matdes.2015.03.036

Cited by 17 publications

(6 citation statements)

References 33 publications

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“…This dynamic process modifies morphology and crystalline degree of the coatings and consequently, their electrochemical response. 22 Deposition of HA on metal substrates was obtained through various methods, [23][24][25] such as pulsed laser deposition, 26 plasma spraying, 27,28 and electrochemical deposition. [29][30][31][32] Recently, we have proposed an advantageous method, which does not require an external power supply for depositing this coating on a metallic substrate.…”

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confidence: 99%

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

Blanda

Brucato

Pavia

et al. 2018

J. Electrochem. Soc.

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Corrosion behavior and cytotoxicity was reported for mixed brushite (BS)/hydroxyapatite (HA) coatings deposited on 316LSS substrate through a displacement reaction. Corrosion tests, carried out in a simulated body fluid, showed that in comparison with bare 316L, coating shifts E corr to anodic values and reduces i corr even if oscillations were observed, which were explained in terms of the chemical interactions at the solid/liquid interface. Cell biocompatibility of the coating was investigated through osteoblastic cell line MC3T3-E1, evidencing the absence of any cytotoxicity Taken together, the results show that galvanic deposition is a simple and cost-effective method for producing bioactive coatings which enhance corrosion resistance and biocompatibility of the substrate.

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confidence: 99%

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

Blanda

Brucato

Pavia

et al. 2018

J. Electrochem. Soc.

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“…Nowadays, various surface modification techniques are reported in the available literature, such as direct laser melting, the chemical method, electrostatic spray deposition, including plasma spraying, which is a commercially feasible method for medical applications. [41][42][43][44][45] However, the bioceramic coatings produced by plasma spraying have a poor bond with the metal substrate and are candidates for easy wear, with the consequent undesired formation of residues. 46 Fabricating a composite coating with hopeite bioceramic on the surface of a bioimplant is an effective solution to these existing problems.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional hydroxyapatite and hopeite coatings on SS254 by laser rapid manufacturing for improved osseointegration and antibacterial character: A comparative study

Das

Shukla

2020

Proc Inst Mech Eng H

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Orthopaedic metallic implant’s long-term success strongly depends upon the two main factors: osseointegration and antibacterial character. Bioceramic (hydroxyapatite and hopeite) coatings have been proven effective for getting strong osseointegration and antibacterial character. However, deterioration of bioceramic coatings during the implantation period can adversely affect its overall biological performance. To conquer this issue, this research work recommends an innovative process route of laser rapid manufacturing for depositing bioceramic (hydroxyapatite and hopeite) coatings with metallurgical bonding. Microstructure, phase composition, antibacterial efficacy and bioactivity were evaluated using scanning electron microscopy, X-ray diffraction, fluorescence-activated cell sorting technique and simulated body fluid immersion test. The promising results obtained from these characterizations and testing establish the new process route laser rapid manufacturing as an effective alternative to deposit multifunctional bioceramic (hydroxyapatite and hopeite) coatings on metallic prosthetic–orthopaedic implants.

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“…Hydroxyapatite (HA)‐coated titanium implants are a favored option for biomedical applications due to its preferential biocompatibility and osteoconduction . Among different methods utilized for HA‐coated implants, electrophoretic deposition (EPD) is a cost‐effective method for generating a uniform HA coating on a metal substrate even with complex geometric shapes . However, the HA coatings still have some disadvantages such as the release of toxic elements from metal substrate, thermal expansion mismatch between metal substrate and HA coating, and decomposition of the HA coating at high temperature which is an inherent, inevitable part of production process .…”

Section: Introductionmentioning

confidence: 99%

Determination of optimum Al content in HA‐Al₂O₃ nanocomposites coatings prepared by electrophoretic deposition on titanium substrate

Askari

Yousefpour

Rajabi

2017

Int J Applied Ceramic Tech

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In this research work, Hydroxyapatite (HA)-Al 2 O 3 bio nanocomposite coatings were coated on titanium substrate by electrophoretic deposition (EPD) and reaction bonding process. The reaction bonding process densifies the coating and creates small uniform porosities. HA-Al 2 O 3 bio nanocomposite coatings were analyzed by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). For the coatings sintered for 2 hours at 850°C, XRD results demonstrated no significant HA decomposition. The adhesion strength increased from 10.2 MPa to 25 MPa. It was determined that 50 wt.% of Al is the optimum content for producing free-of-crack composite coatings on the titanium surface as shown by SEM examination. | INTRODUCTIONThe functions of diseased and broken calcified tissues, such as bone and teeth, can be restored by applying orthopedic and dental implants. The good fixation of these implants in the body depends on the presence of a stable and powerful interface between the bone and the implant. is a cost-effective method for generating a uniform HA coating on a metal substrate even with complex geometric shapes. 22,26 However, the HA coatings still have some disadvantages such as the release of toxic elements from metal substrate, thermal expansion mismatch between metal substrate and HA coating, and decomposition of the HA coating at high temperature which is an inherent, inevitable part of production process. 27,28 To solve these problems, several studies have been conducted, such as micro arc TiO 2 and anodic Al 2 O 3 between bioactive HA coating and metal substrate, which led to some helpful results. [29][30][31] The problems caused by the shrinkage of ceramics during sintering can be solved by a reaction bonding process. When sintering process performs in an oxidizing air atmosphere, the metal phase changes to the metal oxide phase which is sintered and bonded to the substrate. Volume expansion created by the Al?Al 2 O 3 reaction compensate the sintering shrinkage between coating and substrate. Therefore, lowshrinkage Al 2 O 3 ceramics are produced. 32,33 In this research project, the suspensions containing 20 g/L of HA nanoparticles and Al nanoparticles were prepared by different compositions. Isopropanol and acetone with the ratio of 50/50 and iodine (0.6 g/L) were used as a medium

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Characteristics of sintered HA coating deposited by chemical method on AISI 316L substrate

Cited by 17 publications

References 33 publications

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

Multifunctional hydroxyapatite and hopeite coatings on SS254 by laser rapid manufacturing for improved osseointegration and antibacterial character: A comparative study

Determination of optimum Al content in HA‐Al₂O₃ nanocomposites coatings prepared by electrophoretic deposition on titanium substrate

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Characteristics of sintered HA coating deposited by chemical method on AISI 316L substrate

Cited by 17 publications

References 33 publications

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

In Vitro Corrosion and Biocompatibility of Brushite/Hydroxyapatite Coatings Obtained by Galvanic Deposition on 316LSS

Multifunctional hydroxyapatite and hopeite coatings on SS254 by laser rapid manufacturing for improved osseointegration and antibacterial character: A comparative study

Determination of optimum Al content in HA‐Al2O3 nanocomposites coatings prepared by electrophoretic deposition on titanium substrate

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Determination of optimum Al content in HA‐Al₂O₃ nanocomposites coatings prepared by electrophoretic deposition on titanium substrate