Microstructure and in vitro behaviour of 45S5 bioglass coatings deposited by high velocity suspension flame spraying (HVSFS)

Bioceramics used as coatings show different biocompatibility and bioactive behavior in relation to their chemical and morphological behavior. Bioactive ceramics such as β-tricalcium phosphate (β-TCP) promote and enhance biological fixation. Stable coatings require an optimum between resorption rate, flexural strength and adhesive strength of the coating. Therefore new bioceramic coating materials that ensure the balance between loss of substances and osteointegration need to be designed and investigated. By modifying the high velocity suspension flame spraying (HVSFS) process parameters, five coatings with different materials were obtained. The in vitro cytotoxicity was determined by the microculture tetrazolium (WST) assay after 24, 48 and 72 h. Cells were grown on the materials for 3, 7, 14, and 21 days and counted. Cell morphology, cell attachment, and cell spreading were investigated using fluorescence microscopy and raster scanning electron microscopy. All substrates supported sufficient cellular growth for 19 days and showed no cytotoxicity. On each material an identical cell colonisation of well communicating, polygonal, vital cells was verified.

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Microstructural and in vitro characterisation of high-velocity suspension flame sprayed (HVSFS) bioactive glass coatings

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2009.01.032 ◽

2009 ◽

Vol 29 (11) ◽

pp. 2249-2257 ◽

Cited By ~ 31

Author(s):

G. Bolelli ◽

V. Cannillo ◽

R. Gadow ◽

A. Killinger ◽

L. Lusvarghi ◽

...

Keyword(s):

Bioactive Glass ◽

High Velocity

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High velocity suspension flame spraying (HVSFS) of metal doped bioceramic coatings

Bioactive Materials ◽

10.1016/j.bioactmat.2017.04.006 ◽

2017 ◽

Vol 2 (3) ◽

pp. 162-169 ◽

Cited By ~ 6

Author(s):

P. Krieg ◽

A. Killinger ◽

R. Gadow ◽

S. Burtscher ◽

A. Bernstein

Keyword(s):

High Velocity ◽

Flame Spraying ◽

Metal Doped ◽

Bioceramic Coatings

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Enhancing In Vitro Bioactivity of Melt-Derived 45S5 Bioglass® by Comminution in a Stirred Media Mill

Journal of the American Ceramic Society ◽

10.1111/jace.12615 ◽

2013 ◽

Vol 97 (1) ◽

pp. 150-156 ◽

Cited By ~ 25

Author(s):

Stefan Romeis ◽

Alexander Hoppe ◽

Claudia Eisermann ◽

Nadine Schneider ◽

Aldo R. Boccaccini ◽

...

Keyword(s):

In Vitro Bioactivity ◽

45S5 Bioglass ◽

Stirred Media Mill

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Deposition of chromium oxide-chromium carbide coatings via high velocity suspension flame spraying (HVSFS)

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2018.07.072 ◽

2018 ◽

Vol 351 ◽

pp. 171-176 ◽

Cited By ~ 3

Author(s):

Andrea Förg ◽

Matthias Blum ◽

Andreas Killinger ◽

José Andrés Moreno Nicolás ◽

Rainer Gadow

Keyword(s):

Chromium Carbide ◽

Chromium Oxide ◽

High Velocity ◽

Flame Spraying ◽

Carbide Coatings ◽

Chromium Carbide Coatings

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Wires for Arc and High Velocity Flame Spraying—Wire Design, Materials, and Coating Properties

Thermal Spray 2000: Proceedings from the International Thermal Spray Conference ◽

10.31399/asm.cp.itsc2000p0609 ◽

2000 ◽

Author(s):

J. Wilden ◽

A. Wank ◽

F. Schreiber

Keyword(s):

High Velocity ◽

Protective Coatings ◽

Large Diameter ◽

Flame Spraying ◽

Arc Spraying ◽

Coating Properties ◽

Effective Protection ◽

Low Degree ◽

High Degree ◽

Cored Wires

Abstract Cored wires show a high potential for production of protective coatings for combined corrosion and wear applications. Iron and nickel based grooved cored wires without and with different reinforcing carbide fillers have been sprayed by arc- and high velocity combustion wire (HVCW) spraying with a Praxair Type 216 gun. Depending on the wear mechanism coatings with a similar abrasive or oscillating wear resistance like HVOF WC/Co/Cr 86/10/4 have been produced. For effective protection against oscillating wear wires with a large diameter and therefore a high content of reinforcing carbide filler have to be applied. All nickel based coatings with chromium addition show an improved corrosion resistance compared to HVOF-sprayed WC/Co/Cr 86/10/4. For coatings from wires with NiCr 80/20 velum no effect of severe sulphurous corrosion in the DIN 50018 test is observed. HVCW-spraying is especially suitable, when only a low degree of interaction between velum and filler material is wanted as for cermet-like coatings. Conventional arc-spraying rather meets the demands of a high degree of interaction between velum and filler necessary for the production of pure metallic coatings like NiCrBSi. All manufactured coatings show good machinability.

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