Effects of annealing in air on microstructure and hardness of hydroxyapatite ceramics

Abstract In this study, microstructural variation of hydroxyapatite (HAp) ceramics upon thermal treatment in air at different temperatures was investigated by x-ray diffraction patterns, Raman and x-ray photoelectron spectroscopies. The results revealed a significant dependence of the microstructure...

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Bibliographic Details
Published inJournal of physics. D, Applied physics Vol. 54; no. 31; pp. 315301 - 315309
Main Authors Zhu, Wenliang, Imamura, Hayata, Marin, Elia, Adachi, Tetsuya, Miyamoto, Nao, Yamamoto, Toshiro, Kanamura, Narisato, Pezzotti, Giuseppe
Format Journal Article
LanguageEnglish
Published IOP Publishing 05.08.2021
Subjects
annealing
ceramics
hydroxyapatite
microstructure
Raman spectroscopy
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Summary:Abstract In this study, microstructural variation of hydroxyapatite (HAp) ceramics upon thermal treatment in air at different temperatures was investigated by x-ray diffraction patterns, Raman and x-ray photoelectron spectroscopies. The results revealed a significant dependence of the microstructure of nonstoichiometric HAp on temperature, because of the competition between hydroxylation and different kinds of dehydroxylation at different temperatures, and a gradual increase in material hardness with annealing temperature because of structural reconstruction. In summary, a suitable thermal treatment can effectively tailor microstructure and defect contents, as well as chemical composition and mechanical hardness of HAp ceramics.
Bibliography:JPhysD-127110.R2
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/abfe82