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New Processing Technique for Hydroxyapatite Ceramics by the Hydrothermal Hot‐Pressing Method
Author(s) -
Hosoi Kazuyuki,
Hashida Toshiyuki,
Takahashi Hideaki,
Yamasaki Nakamichi,
Korenaga Takashi
Publication year - 1996
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.1151-2916.1996.tb09048.x
Subject(s) - materials science , ceramic , lamellar structure , hydrothermal circulation , microstructure , ultimate tensile strength , calcium hydroxide , hot pressing , porosity , metallurgy , mineralogy , composite material , chemical engineering , chemistry , engineering
A new processing technique for preparing hyroxyapatite (HAp) ceramics has been developed using the hydrothermal hot‐pressing (HHP) method. Powder mixed dibasic calcium phosphate dihydrate and calcium hydroxide mixed with a Ca/P ratio of 1.67 was treated at 150°C and 40 MPa. The HHP method with the selection of the powder enabled the HAp to be solidified at the low temperature. The resulting HAp ceramics had a tensile strength of approximately 10 MPa. Furthermore, the HAp ceramics possessed a lamellar microstructure and high porosity.