Abstract
Highly crystalline (∼80%) yet porous (∼20%) hydroxyapatite (HAp) coating was developed on surgical grade SS316L substrate by the microplasma spraying (MIPS) technique. Phase analysis and microstructural characterisations were carried out by X-ray diffraction, scanning electron microscopy and field emission scanning electron microscopy. Nanohardness and Young’s modulus were measured by the nanoindentation technique at 100 mN load. Further, the HAp coatings were immersed in simulated body fluid (SBF) environment for 1–14 days to investigate their in vitro properties. Finally, single pass microscratch test was also conducted on the MIPS-HAp coatings after immersion in SBF.
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