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Hydrothermal Preparation of Calcium Hydroxyapatite Powders
Author(s) -
Hattori Takeo,
Lwadate Yasuhiko
Publication year - 1990
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.1151-2916.1990.tb09841.x
Subject(s) - hydrothermal circulation , calcium , calcium oxide , materials science , chemical engineering , mineralogy , calcium pyrophosphate , hydrothermal synthesis , nuclear chemistry , metallurgy , chemistry , engineering
Calcium hydroxyapatite powders were prepared by hydrothermal reactions of calcium pyrophosphate and calcium oxide. Primary particles of the hydroxyapatite obtained were spherical with diameters less than 0.2 μm, and small prismatic crystals were rarely observed in some fields. The effects of temperature, pressure, and soaking time on the structural features of the resultant powders were also studied by means of XRD and SEM and were smaller than expected for the ranges investigated.