HVSFS spraying

Figure 5.33 shows the surface (a) and the cross section (b) of a typical HVSF-sprayed hydroxyapatite coating with a highly dense structure that attest to complete melting of the powder particles and superior adhering to the substrate. The dense coating resembles a glassy layer with non-identifiable lamella boundaries (see also Bolelli et al., 2014). 

Figure 5.33 Surface (a) and cross section (fracture surface, (b)) of a HVSF-sprayed hydroxyapatite coating (Stiegler, 2012). (Images courtesy of Dipl-lng. Peter Krieg, University Stuttgart.)...

A research team at the Department of Materials and Environmental Engineering, University of Modena and Reggio Emilia, Italy, published a continuous string of contributions on HVSF-sprayed bioglass coatings (Bolelli et al., 2009a, 2010a,b Altomare etal., 2011 Bellucci etal., 2012). 

A limited number of contributions dealing with HVSF-sprayed alumina coatings exist. While these contributions appear to have no direct bearing to bioceramic coatings, alumina is considered a bioinert ceramic and, in the future, applications may arise for such coatings in the biomedical realm. 

N. (2010) Microstructure and in-vitro behaviour of a novel high-velocity suspension flame sprayed (HVSFS) bioactive glass coating. Surf. Coat. Technol., 205 (4), 1145-1149. 

High Velocity Suspension Flame Spraying (HVSFS)... 

Gadow, R., Killinger, A., and Rauch, J. (2008) New results in high velocity suspension flame spraying (HVSFS). Surf. Coat. Technol., 202 (18), 4329-4336. 

Stiegler, N., Bellucci, D., Bolelli, G., Cannillo, V., Gadow, R., Killinger, A., Lusvarghi, L., and Sola, A. (2012) High-velocity suspension flame sprayed (HVSFS) hydroxyapatite coatings for biomedical applications. / Therm. Spray Technol., 21 (2), 275 — 287. 

High velocity suspension flame sprayed (HVSFS) hydroxyapatite coatings for biomedical applications, in Advanced Ceramic Coatings and Materials for... 

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