Crystals 2015, 5(4), 447-457; doi:10.3390/cryst5040447
Laser Annealing for Gas-Dynamical Spraying of HA Coating upon a Titanium Surface
1
Laboratory of Innovative Additive Technologies, Moscow State University of Technology “STANKIN”, 127055 Moscow, Russia
2
Lebedev Physical Institute of Russian Academy of Sciences, Samara Branch, Novo-Sadovaja st. 221, 443011 Samara, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Helmut Cölfen
Received: 29 July 2015 / Revised: 18 September 2015 / Accepted: 28 September 2015 / Published: 8 October 2015
Abstract
Laser post-heating computer controlled detonation spraying (CCDS) and cold spray (CS) hybrid processes were proposed for fabrication of near sub micron structure coatings of hydroxyapatite (HA) + Ti system. Optical and SEM with energy dispersive X-ray analysis and comparative XRD phase analysis were used to evaluate microstructure. After those hybrid processes, no substantial variation in HA composition was noted by structural and phase examination. Nano-sized HA powders can be recommended for laser annealing CS (LaCS) process. Regimes of laser treatment optimal for increasing the adhesion between the HA and titanium coatings, providing more strength, ductility and decreasing of HA destruction in the coatings were determined. View Full-TextKeywords:
computer controlled detonation spraying (CCDS); cold spray (CS); laser annealing CCDS and CS; hydroxyapatite (HA)
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Saphronov, V.; Shishkovsky, I. Laser Annealing for Gas-Dynamical Spraying of HA Coating upon a Titanium Surface. Crystals 2015, 5, 447-457.
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