Journal
SCRIPTA MATERIALIA
Volume 55, Issue 10, Pages 863-866Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2006.07.049
Keywords
hydroxyapatite; composites; interfaces; sintering; microstructure
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The integrity of composites is determined by the interfacial reactions that take place during processing. The interfacial reaction between hydroxyapatite and alumina has been studied. It was found that alumina completely reacted with hydroxyapatite and formed alumina-rich calcium aluminates at relatively low temperatures. This has been attributed to the diffusion of Ca2+ from hydroxyapatite into the alumina matrix. The depletion of Ca2+ from hydroxyapatite leads to the decomposition of hydroxyapatite in to tricalcium phosphate at lower temperatures. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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