Plasma Sprayed Hydroxyapatite Coatings: Influence of Spraying Power on Microstructure

Autor: S. M. Mohd, M. Z. Abd, A. N. Abd, Mohamad Rusop, Rihanum Yahaya Subban, Norlida Kamarulzaman, Wong Tin Wui
Rok vydání: 2010
Předmět:
Zdroj: AIP Conference Proceedings.
ISSN: 0094-243X
DOI: 10.1063/1.3377885
Popis: The plasma sprayed hydroxyapatite (HA) coatings are used on metallic implants to enhance the bonding between the implant and bone in human body. The coating process was implemented at different spraying power for each spraying condition. The coatings formed from a rapid solidification of molten and partly molten particles that impact on the surface of substrate at high velocity and high temperature. The study was concentrated on different spraying power that is between 23 to 31 kW. The effect of different power on the coatings microstructure was investigated using scanning electron microscope (SEM) and phase composition was evaluated using X‐ray diffraction (XRD) analysis. The coatings surface morphology showed distribution of molten, partially melted particles and some micro‐cracks. The produced coatings were found to be porous as observed from the cross‐sectional morphology. The coatings XRD results indicated the presence of crystalline phase of HA and each of the patterns was similar to the initial powder. Regardless of different spraying power, all the coatings were having similar XRD patterns.
Databáze: OpenAIRE