| Title | Effect of heat treatment on relative content of β-Ca 2P
2O
7 crystalline phase in calcium phosphate glass-ceramics
|
| Publication Type | Journal Article |
| 2003 |
| Authors | Li, Y, Weng, W, Du, P, Shen, G, Han, G, Santos, JD, Lopes, AM |
| Journal | Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic SocietyKuei Suan Jen Hsueh Pao |
| Volume | 31 |
| Issue | 7 |
| Pagination | 669 - 672+677 |
| Date Published | 2003/// |
| 04545648 (ISSN) |
| Bioactivity, Calcium Compounds, calcium phosphate, Crystalline materials, Crystalline phase, Crystallization, Glass ceramics, Glass-ceramics, Heat treatment, Nucleation, Phase separation, Phosphates |
| The 3Na 2O-12TiO
2-57CaO-28P
2O
5 glass was heat-treated to form glass-ceramics under different conditions. The relationships between the heat-treatment conditions and the content of β-Ca
2P
2O
7 in the glass-ceramics, bioactivity of the glass-ceramics were investigated. The experimental results show that the glass-ceramics contain crystalline phases of β-Ca
2P
2O
7, CaTi
4(PO
4)
6, NaTi
2(PO
4)
3 and TiP
2O
7 after heat-treatment, in which β-Ca
2P
2O
7 crystalline phase is a dominant one; the content of β-Ca
2P
2O
7 crystalline phase in the glass-ceramics increases with the increase of nucleation temperature and time; and the glass-ceramics with more β-Ca
2P
2O
7 crystalline phase has a better bioactivity. The role of heat-treatment in increasing the content of β-Ca
2P
2O
7 crystalline phase in the glass-ceramics is attributed to the crystallization of β-Ca
2P
2O
7 involved in the simultaneous occurrence of the glass phase separation and nucleation processes. Due to the better ability of β-Ca
2P
2O
7 in promoting bioactivity, the glass-ceramics with more β-Ca
2P
2O
7 phase have stronger bioactivity. Therefore, the bioactivity of the glass-ceramics could be changed by heat treatment.
|
| http://www.scopus.com/inward/record.url?eid=2-s2.0-0347513558&partnerID=40&md5=1155e6484ca4dd506ea1406fd2544671 |
