Effects of heat treatment temperature and atmosphere on the morphology and structure of calcium phosphate

D. R. Tresnasari, A. L. Juwono, D. S. Soejoko, N. N. Mulyaningsih

Research output: Contribution to journalConference articlepeer-review


Calcium phosphate can exist as several phases including hydroxyapatite (HA) and β-tricalcium phosphate (βTCP). Both HA and βTCP are chemically similar to calcified tissue, resulting in high incompatibility. In this study, we investigated the effects of heat treatment temperature (800 °C and 900 °C) and atmosphere (ambient air and argon) on the morphology, crystalline structure, and functional groups of calcium phosphate powder. Calcium phosphate without heat treatment was evaluated for comparison. The powders were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and transmission electron microscopy. Under both atmospheric conditions, the effect of heat treatment at 800 °C led to the formation of both HA and βTCP, which was caused by the reduction of CO/- bond in calcium phosphate. In contrast, the heat treatment of calcium phosphate at 900 °C generated C-H and C=O groups, resulting in βTCP alone.

Original languageEnglish
Article number012028
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 22 Feb 2019
Event2nd International Conference on Current Progress in Functional Materials 2017, ISCPFM 2017 - Bali, Indonesia
Duration: 8 Nov 20179 Nov 2017


  • calcium phosphate
  • crystalline structure
  • functional group bonds
  • hydroxyapatite
  • morphology
  • β-tricalcium phosphate


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