In this paper, a new treatment method, flame remelt spheroidization, is used to improve the crystallinity of hydroxyapatite (HA) powders. Based on SEM and XRD analysis, the treated powder is more crystalline than spray-dried and sintered HA powder and has higher density and a smoother surface morphology as well. In addition, coatings produced by plasma spraying the treated powder are shown to have better surface microstructure than coatings synthesized from untreated powder.

bioactive coatings, crystallinity, flame remelt spheroidization, hydroxyapatite powder, plasma spraying
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Copyright © 2009 ASM International. All rights reserved.
2009
ASM International
Topics
Crystal structure Microstructure Bioactive ceramics Ceramic powder Plasma spray coating Remelting
Issue Section:
Biomedical Coatings
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