Baghdadite coating formed by hybrid water-stabilized plasma spray for bioceramic applications: Mechanical and biological evaluations

Pham, Duy Quang; Berndt, C. C.; Gbureck, Uwe; Zreiqat, Hala; Lu, Zufu; Ang, Andrew Siao Ming

doi:10.1016/j.msec.2021.111873

Cited by 12 publications

(12 citation statements)

References 40 publications

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“…The results demonstrated ZnO/BAG is a promising coating for orthopaedic usages of biodegradable Mg alloys seeing its excellent antibacterial activities and high corrosion resistance. Pham et al 22 investigated the mechanical and biological attributes of BAG coating synthetic on Ti 6 Al 4 V substrating using hybrid water-stabilized plasma spray. Mechanical tests showed that the BAG coating provides higher rigidity, elastic modulus and better resistance to scratches and abrasion.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: The numerical study of pressure and temperature effects on mechanical properties of baghdadite-based nanostructure: molecular dynamics simulation

Bykanova

Akhmadeev

et al. 2022

Sci Rep

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Bioceramics have been commonly implemented to replace and restore hard tissues such as teeth and bones in recent years. Among different bioceramics, Baghdadite (BAG) has high bioactivity due to its ability to form apatite and stimulate cell proliferation. So, this structure is used widely for medical applications to treat bone-based diseases. Physically, we expect changes in temperature and pressure to affect the Baghdadite-based nanostructure’s mechanical behaviour. So, in this computational study, we report the pressure/temperature effect on Baghdadite matrix with nanoscale size by using Molecular Dynamics (MD) approach. To this end, physical values like the total energy, temperature, final strength (FS), stress–strain curve, potential energy, and Young’s modulus (YM) are reported. Simulation results indicated the mechanical properties of Baghdadite (BAG) nanostructure weakened by temperature and pressure increase. Numerically, the FS and YM of the defined structure reach 131.40 MPa/159.43 MPa, and 115.15 MPa/139.72 MPa with temperature/pressure increasing. Therefore, the increase in initial pressure and temperature leads to a decrease in the mechanical properties of nanostructures. These results indicate the importance of the initial condition in the Baghdadite-based nanostructures’ mechanical behaviour that must be considered in clinical applications.

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: The numerical study of pressure and temperature effects on mechanical properties of baghdadite-based nanostructure: molecular dynamics simulation

Bykanova

Akhmadeev

et al. 2022

Sci Rep

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“…High Sdr values provide more surface area to stimulate cell attachment onto the surface. 46 Figure 6 shows water contact angle measurements of the HAp-Ga and HAp coatings, where the droplets were measured after being stable on the surfaces in Figure 6a,b. The HAp-Ga coating is hydrophilic with an average water contact angle of 78.1 ± 7.0°, and the HAp coating is hydrophobic with an average water contact angle of 107.1 ± 6.1°.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the different behavior among these regions could arise from the amorphous and crystalline phases in the coating, which has been evaluated in other studies. 43,46 Identical analyses to evaluate the mechanical properties of the HAp-only coating are depicted in Figure 9, where the distribution of the elastic modulus and hardness and the elemental maps are given. These two coatings of HAp and HAp-Ga presented similar hardness ranges and elastic modulus values, but the HAp coating revealed a more even distribution of mechanical properties in Figure 9a,b.…”

Section: Resultsmentioning

confidence: 99%

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Antibacterial Longevity of a Novel Gallium Liquid Metal/Hydroxyapatite Composite Coating Fabricated by Plasma Spray

Pham

Gangadoo

Berndt

et al. 2022

ACS Appl. Mater. Interfaces

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Hydroxyapatite (HAp)-coated metallic implants are known for their excellent bioactivity and osteoconductivity. However, infections associated with the microstructure of the HAp coatings may lead to implant failures as well as increased morbidity and mortality. This work addresses the concerns about infections by developing novel composite coatings of HAp and gallium liquid metal (GaLM) using atmospheric plasma spray (APS) as the coating technique. Five weight percent Ga was mixed into a commercially supplied HAp powder using an orbital shaker; then, the HAp-Ga particle feedstock was coated onto Ti 6 Al 4 V substrates using the APS technique. The X-ray diffraction results indicated that Ga did not form any Ga-related phases in either the HAp-Ga powder or the respective coating. The GaLM filled the pores of the HAp coating presented both on the top surface and within the coating, especially at voids and cracks, to prevent failures of the coating at these locations. The wettability of the surface was changed from hydrophobic for the HAp coating to hydrophilic for the HAp-Ga composite coating. Finally, the HAp-Ga coating presented excellent antibacterial efficacies against both initial attachments and established biofilms generated from methicillinresistant Staphylococcus aureus and Pseudomonas aeruginosa after 18 h and 7 days of incubation in comparison to the control HAp coating. This study shows that GaLM improves the antibacterial properties of HAp-based coatings without sacrificing the beneficial properties of conventional HAp coatings. Thus, the HAp-Ga APS coating is a viable candidate for antibacterial coatings.

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“…Therefore, it is crucial to develop artificial hip joints with high longevity and excellent tribological properties. Currently, surface modification techniques such as plasma spraying [4][5][6][7] and laser cladding [8][9][10][11] can be used to improve the tribological properties and maintain the excellent mechanical properties by preparing a layer of bioinert ceramic coating on the surface of the titanium alloy artificial hip joint head, which in turn meets the long-life requirements of the artificial hip joint.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Chen

Deng

et al. 2022

Coatings

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Laser cladding coating has many advantages in surface modification, such as a small heat-affected zone, and good metallurgical bonding. However, some serious problems such as pores, and poor forming quality still exist in the coating. To suppress these problems, a novel process of ultrasonic vibration-assisted laser cladding process was adopted to in-situ synthesize TiC/TiB composite ceramic coating on the surface of titanium alloy. Results showed that the introduction of ultrasonic vibration effectively improved the surface topography of the coating, reduced the number of pores in the coating, refined the crystal grains of the coating, decreased the residual tensile stress in the coating, and increased the micro-hardness of the coating. The tribological properties of the coating were significantly improved by the ultrasonic vibration, the wear resistance of the coating fabricated with ultrasonic vibration at power of 400 W increased about 1.2 times compared with the coating fabricated without ultrasonic vibration, and the friction coefficient decreased by 50%.

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Baghdadite coating formed by hybrid water-stabilized plasma spray for bioceramic applications: Mechanical and biological evaluations

Cited by 12 publications

References 40 publications

RETRACTED ARTICLE: The numerical study of pressure and temperature effects on mechanical properties of baghdadite-based nanostructure: molecular dynamics simulation

RETRACTED ARTICLE: The numerical study of pressure and temperature effects on mechanical properties of baghdadite-based nanostructure: molecular dynamics simulation

Antibacterial Longevity of a Novel Gallium Liquid Metal/Hydroxyapatite Composite Coating Fabricated by Plasma Spray

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

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