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Fabrication of functionally graded materials of hydroxyapatite and titanium  

김성진 (금오공과대학교 재료공학과)
박지환 (금오공과대학교 재료공학과)
조경식 (금오공과대학교 재료공학과)
박노진 (금오공과대학교 재료공학과)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.12, no.3, 2002 , pp. 144-148 More about this Journal
Abstract
Hydroxyapatite/titanium composites were prepared as 4-layered functionally graded materials (FGM) using a spark plasma sintering (SPS) apparatus. The maximum density and the biaxial strength of hydroxyapatite/titanium composites were achieved by SPS with a holding time 8 minutes at $1200^{\circ}C$. However, the hydroxyapatite was decomposed tetracalcium phosphate (TetCP) at $1100^{\circ}C$, and calcium titanate compounds ($CaTiO_3$) were formed. When titanium was added to hydroxyapatite, decomposition of hydroxyapatite was occurred easily at the low temperature.
Keywords
Hydroxyapatite; Functionally graded materials; Composites; Spark plasma sintering;
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