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Phase Analysis and Thermal Stability of Hot Isostatically Pressed Zirconia–Hydroxyapatite Composites
Author(s) -
Adolfsson Erik,
AlberiusHenning Peter,
Hermansson Leif
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01634.x
Subject(s) - cubic zirconia , materials science , composite material , hot isostatic pressing , sintering , microstructure , phase (matter) , decomposition , thermal stability , hot pressing , scanning electron microscope , ceramic , chemical engineering , chemistry , organic chemistry , engineering
Composites of zirconia and hydroxyapatite (OHAp) have been processed via hot isostatic pressing (HIP) or sintering in air. When the composites were sintered in air at a temperature of 950°C, decomposition of the OHAp to tricalcium phosphate occurred. Using the HIP technique, composites without any detectable degradation of the OHAp phase were produced at 1200°C. The reactivity between zirconia and OHAp was dependent on both the amount of water lost from OHAp and the geometry of the interaction. The phase composition of the materials prepared was evaluated from their powder X‐ray diffraction patterns, and their microstructures were studied via electron microscopy.