Abstract
Hydroxyapatite (HA) coated onto titanium alloys by atmospheric plasma-arc spraying is a promising
 technique for improving biocompatibility of materials. The tissue adherence to the HA coating
 increases when compared to the provided by the natural environment of the human body.
 Hidroxyapatite coating applied to a Ti-6Al-7Nb alloy substrate by plasma spray was characterized
 morphologically via Scanning Electron Microscopy (SEM) and X-Ray diffraction. X-Ray diffraction
 results of the HA layer indicated the presence of crystalline HA, amorphous phase and another
 constituents, like tricalcium phosphate (TCP) and calcium oxide. However, after annealing at a
 temperature of 600oC there was recristalisation of the amorphous phase and transformation of some
 of the TCP to HA. SEM results revealed a lamellar morphology which is typical of plasma sprayed
 surfaces. The HA/alloy interface exhibited some irregularities, however these are not present in the
 majority of the interfacial area.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
