1. Effects of annealing in air on microstructure and hardness of hydroxyapatite ceramics.
- Author
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Zhu, Wenliang, Imamura, Hayata, Marin, Elia, Adachi, Tetsuya, Miyamoto, Nao, Yamamoto, Toshiro, Kanamura, Narisato, and Pezzotti, Giuseppe
- Subjects
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MICROSTRUCTURE , *HARDNESS , *X-ray photoelectron spectroscopy , *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 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. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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