Characterization of Sol-Gel Derived Calcium Hydroxyapatite Coatings Fabricated on Patterned Rough Stainless Steel Surface

Jonauske, Vilma; Stanionytė, Sandra; Chen, Shih Wen; Žarkov, Aleksej; Juškėnas, Remigijus; Selskis, Algirdas; Matijošius, Tadas; Yang, Thomas C.-K.; Ishikawa, Kunio; Ramanauskas, R.; Kareiva, Aivaras

doi:10.3390/coatings9050334

Cited by 24 publications

(16 citation statements)

References 47 publications

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“…The LDH sample with higher crystallinity was obtained from the steel substrate. Interestingly, no side iron oxide (Fe 2 O 3 and Fe 3 O 4 ) phases were formed during the synthesis, as was observed in the case of sol–gel synthesis of calcium hydroxyapatite on stainless-steel substrate [63].…”

Section: Resultsmentioning

confidence: 99%

“…It is well-known that the sol–gel processing route for the preparation of thin films of different materials is a low-cost and simple method, which allows for better chemical homogeneity due to molecular-level mixing of the precursors [60,61,62,63,64,65]. However, the fabrication of LDH films by the sol–gel chemistry method has not been given sufficient attention to date.…”

Section: Introductionmentioning

confidence: 99%

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Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Smalenskaite

Kaba

Grigoravičiūtė-Puronienė

et al. 2019

Materials

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In this study, new synthetic approaches for the preparation of thin films of Mg-Al layered double hydroxides (LDHs) have been developed. The LDHs were fabricated by reconstruction of mixed-metal oxides (MMOs) in deionized water. The MMOs were obtained by calcination of the precursor gels. Thin films of sol–gel-derived Mg-Al LDHs were deposited on silicon and stainless-steel substrates using the dip-coating technique by a single dipping process, and the deposited film was dried before the new layer was added. Each layer in the preparation of the Mg-Al LDH multilayers was separately annealed at 70 °C or 300 °C in air. Fabricated Mg-Al LDH coatings were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and atomic force microscopy (AFM). It was discovered that the diffraction lines of Mg3Al LDH thin films are sharper and more intensive in the sample obtained on the silicon substrate, confirming a higher crystallinity of synthesized Mg3Al LDH. However, in both cases the single-phase crystalline Mg-Al LDHs have formed. To enhance the sol–gel processing, the viscosity of the precursor gel was increased by adding polyvinyl alcohol (PVA) solution. The LDH coatings could be used to protect different substrates from corrosion, as catalyst supports, and as drug-delivery systems in medicine.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Smalenskaite

Kaba

Grigoravičiūtė-Puronienė

et al. 2019

Materials

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“…It has also proven useful in implant-related studies. The following examples focused on analysis of hydroxyapatite coatings on stainless steel [102] and titanium implants [103]. In the first case, Jonauske et al evaluated calcium hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , CHA) coatings obtained by a sol-gel method as a means of protecting steel surfaces to aid their poor bioactivity and associated formation of fibrous tissue, issues typical for this material.…”

Section: Diffuse Reflectance Infrared Fourier Transform Spectroscopymentioning

confidence: 99%

Spectroscopic Methods Used in Implant Material Studies

et al. 2020

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It is recognized that interactions between most materials are governed by their surface properties and manifest themselves at the interface formed between them. To gain more insight into this thin layer, several methods have been deployed. Among them, spectroscopic methods have been thoroughly evaluated. Due to their exceptional sensitivity, data acquisition speed, and broad material tolerance they have been proven to be invaluable tools for surface analysis, used by scientists in many fields, for example, implant studies. Today, in modern medicine the use of implants is considered standard practice. The past two decades of constant development has established the importance of implants in dentistry, orthopedics, as well as extended their applications to other areas such as aesthetic medicine. Fundamental to the success of implants is the knowledge of the biological processes involved in interactions between an implant and its host tissue, which are directly connected to the type of implant material and its surface properties. This review aims to demonstrate the broad applications of spectroscopic methods in implant material studies, particularly discussing hard implants, surface composition studies, and surface–cell interactions.

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“…It also reduces the duration of the healing action of metallic implants. [16][17][18] From the above literature, it is concluded that the HAp has poor mechanical properties and lower wear resistance. However, the problem can overcome by combining HAp with 254 SS so that the former provides better biocompatibility and, later, necessary mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Low velocity oxy fuel spraying of hydroxyapatite coating on a multifunctional UNS S31254 austenitic stainless steel

Tiwari

Mishra

2021

Proc Inst Mech Eng H

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Artificial material such as stainless steel (SS) is widely used for orthopaedic applications owing to its superior properties, ease of fabrication and lower cost. However, in the body environment, stainless steel can leach toxic elements such as nickel and chromium. To prevent this, a hydroxyapatite (HAp) coating having chemical characteristics very similar to the human bone was deposited on a medical-grade UNS S31254 austenitic stainless steel by a Low-velocity oxy-fuel spray gun (LVOF). The coating was characterised by using a field emission scanning electron microscope (FESEM), X-ray diffractometer (XRD) and Fourier transform infrared spectroscope (FTIR). The adhesion strength, microhardness and corrosion behaviour were studied using the Tensometre, Vickers microhardness tester and potentiodynamic polarisation with electrochemical impedance spectroscope. The bacterial adhesion and bioactivity of the coating were also evaluated. The LVOF sprayed HAp coating has shown better corrosion resistance, higher bioactivity and higher hardness than the uncoated steel. The presence of tricalcium phosphate, octa-calcium phosphate (OCP) and tetra-calcium phosphate (TTCP) was found in the coating. LVOF sprayed HAp coating is also found suitable in lowering the bacterial adhesion on the steel substrate.

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Characterization of Sol-Gel Derived Calcium Hydroxyapatite Coatings Fabricated on Patterned Rough Stainless Steel Surface

Cited by 24 publications

References 47 publications

Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Spectroscopic Methods Used in Implant Material Studies

Low velocity oxy fuel spraying of hydroxyapatite coating on a multifunctional UNS S31254 austenitic stainless steel

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