Mechanical and chemical properties of Baghdadite coatings manufactured by atmospheric plasma spraying

Pham, Duy Quang; Berndt, Christopher C.; Gbureck, Uwe; Zreiqat, Hala; Truong, Vi Khanh; Ang, Andrew Siao Ming

doi:10.1016/j.surfcoat.2019.124945

Cited by 34 publications

(11 citation statements)

References 32 publications

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“…2c-f). Unmelted or partially melted spherical particles can also be observed near the surface of the spots [16]. Particle size is in the range of 1-12 µm, and the results are comparable to those reported by Kumari et al [37].…”

Section: Resultssupporting

confidence: 88%

“…3c, e) over the surface and clear lamellar structure (Fig. 2d, f) [16,36]. The splats consist of high ridges of splattered deposited molten metal and melted regions, which are related to the discharge channels (Fig.…”

Section: Resultsmentioning

confidence: 92%

“…Prolongation of the implant's life cycle inside the body has been extensively studied [9]. The majority of reports are based on surface expansion to fix the implant properly and then to increase corrosion resistance [10], i.e., grinding, etching, laser surface texturing [11], plasma spraying, etc., [12] combined with various coatings, i.e., Ti, TiN, TiO 2 [13], Zr, ZrO 2 [14], hydroxyapatite (HAp) [15], and Al 2 O 3 [16] . Hybrid treatment of implant materials is aimed at providing adequate influence of the surrounding tissues, and among many properties, the most important is significantly enhanced corrosion resistance [17].…”

Section: Introductionmentioning

confidence: 99%

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The influence of plasma-sprayed coatings on surface properties and corrosion resistance of 316L stainless steel for possible implant application

Woźniak

Staszuk

Reimann

et al. 2021

Archiv.Civ.Mech.Eng

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Herein, we analyzed the morphology of atmospheric plasma-sprayed (APS) coating on medical 316L stainless steel and its influence on the physical and electrochemical properties of implant application. Five types of coatings were examined: hydroxyapatite (HAp), titanium (Ti), zirconium (Zr), Ti/HAp and Zr/HAp. The base properties of the coatings were analyzed via chemical and phase composition, surface topography, surface wettability and in particular the corrosion resistance in Ringer solution in immersed conditions and potentiodynamic test, and EIS analysis. APS coating of pure HAp on 316L stainless steel showed poor cohesive bonding to the substrate material, whereas the application of Ti and Zr interlayer prior to HAp deposition improved surface morphology and coating properties. The beneficial effect of Ti and Zr interlayer under HAp layer on binding was demonstrated. HAp containing coatings (HAp, Ti/HAp and Zr/HAp) show Ca/P ratio greater than 1.8, which may positively influence the differentiation of osteogenic cells and good adhesion to bones. Among the studied materials, the composite coatings with Zr or Zr/HAp showed favorable physicochemical properties and the highest corrosion resistance in Ringer solution.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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The influence of plasma-sprayed coatings on surface properties and corrosion resistance of 316L stainless steel for possible implant application

Woźniak

Staszuk

Reimann

et al. 2021

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

show abstract

“…The distributions of hardness and elastic moduli of coatings were investigated using accelerated property mapping (XPM) with the support of the scanning probe microscopy (SPM) method. The nanoindentation test were performed following the testing procedure, which was described in the previous study of Pham et al [27]. Briefly, the tests were done on areas of 30 × 30 µm 2 with 400 indents in each area (1.5 µm gap between indents).…”

Section: Coating Characterisationsmentioning

confidence: 99%

Mechanical Properties of Strontium–Hardystonite–Gahnite Coating Formed by Atmospheric Plasma Spray

Pham

Berndt

Sadeghpour³

et al. 2019

Coatings

Self Cite

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In this work, we measured the mechanical properties and tested the cell viability of a bioceramic coating, strontium–hardystonite–gahnite (Sr–HT–G, Sr–Ca2ZnSi2O7–ZnAl2O4), to evaluate potential use of this novel bioceramic for bone regeneration applications. The evaluation of Sr–HT–G coatings deposited via atmospheric plasma spray (APS) onto Ti–6Al–4V substrates have been contrasted to the properties of the well-known commercial standard coating of hydroxyapatite (HAp: Ca10(PO4)6(OH)2). The Sr–HT–G coating exhibited uniform distribution of hardness and elastic moduli across its cross-section; whereas the HAp coating presented large statistical variations of these distributions. The Sr–HT–G coating also revealed higher results of microhardness, nanohardness and elastic moduli than those shown for the HAp coating. The nanoscratch tests for the Sr–HT–G coating presented a low volume of material removal without high plastic deformation, while the HAp coating revealed ploughing behaviour with a large pileup of materials and plastic deformation along the scratch direction. Furthermore, nanoscanning wear tests indicated that Sr–HT–G had a lower wear volume than the HAp coating. The Sr–HT–G coating had slightly higher cell attachment density and spreading area compared to the HAp coating indicating that both coatings have good biocompatibility for bone marrow mesenchymal stem cells (BMSCs).

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“…Surface engineering methods are known to enhance the pristine properties of bulk materials [ 21 , 22 , 23 , 24 ]. For cold cathodes, geometry engineering and surface modification are alternative methods to improve field emission performance [ 25 , 26 , 27 ] .…”

Section: Introductionmentioning

confidence: 99%

Improved Field Emission Properties of Carbon Nanostructures by Laser Surface Engineering

Minh

Nguyen

Hiep³

et al. 2020

Nanomaterials

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We herein present an alternative geometry of nanostructured carbon cathode capable of obtaining a low turn-on field, and both stable and high current densities. This cathode geometry consisted of a micro-hollow array on planar carbon nanostructures engineered by femtosecond laser. The micro-hollow geometry provides a larger edge area for achieving a lower turn-on field of 0.70 V/µm, a sustainable current of approximately 2 mA (about 112 mA/cm2) at an applied field of less than 2 V/µm. The electric field in the vicinity of the hollow array (rim edge) is enhanced due to the edge effect, that is key to improving field emission performance. The edge effect of the micro-hollow cathode is confirmed by numerical calculation. This new type of nanostructured carbon cathode geometry can be promisingly applied for high intensity and compact electron sources.

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Mechanical and chemical properties of Baghdadite coatings manufactured by atmospheric plasma spraying

Cited by 34 publications

References 32 publications

The influence of plasma-sprayed coatings on surface properties and corrosion resistance of 316L stainless steel for possible implant application

The influence of plasma-sprayed coatings on surface properties and corrosion resistance of 316L stainless steel for possible implant application

Mechanical Properties of Strontium–Hardystonite–Gahnite Coating Formed by Atmospheric Plasma Spray

Improved Field Emission Properties of Carbon Nanostructures by Laser Surface Engineering

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