Abstract
The influence of cooling rate on the purity of tetracalcium phosphate powder (TTCP) prepared by high temperature solid state reaction was investigated. XRD and FTIR were used to determine the thermal behavior of TTCP powder. The results indicate that the purity of TTCP depends decisively on cooling rate after TTCP was sintered at 1500°C for 15 h. Quenching in air is propitious to the formation of pure TTCP. while cooling in furnace will cause the decomposition of TTCP and less TTCP is obtained. The examination of the thermal behavior of powder heated at different temperatures and the corresponding check-testing verify that there surely exists a decomposition temperature region of TTCP during subsequent cooling. It shows that cooling rate is a necessary condition for synthesizing TTCP by solid-state reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 689-693 |
| Number of pages | 5 |
| Journal | Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society |
| Volume | 32 |
| Issue number | 6 |
| State | Published - Jun 2004 |
Keywords
- Bioceramics
- Cooling rate
- Solid-state reaction
- Tetracalcium phosphate
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