Abstract
SiO2-free calcium phosphate glass-ceramics with easy machinability were prepared by heat-treatment of a 60CaO-30P2O5-3TiO2-7Na2O (in mol%) glass. The glass-ceramics containing β-Ca2P2O7 and β-Ca3(PO4)2 crystals were found to show good machinability, as confirmed by a drilling test using a conventional carbide tool. SEM observation of the glass-ceramic showed that β-Ca2P2O7 crystals having a layered morphology are interlocking one another; plate-like crystals of several tens nanometers in thickness are piled up. The easy machinability of the glass-ceramics was suggested to result from the cleavage of β-Ca2P2O7 crystals precipitated in the glass. The glass-ceramics formed bonelike apatite crystals on the surface in simulated body fluid. The glass-ceramics were also found to be strongly joined with a new β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr, by heating in air.
| Original language | English |
|---|---|
| Pages (from-to) | 3183-3188 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 426-432 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2003 |
| Externally published | Yes |
| Event | Thermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain Duration: 2003 Jul 7 → 2003 Jul 11 |
Keywords
- Ap atite formation
- Bioactivity
- Biomaterial
- Calcium phosphate
- Coating
- Glass
- Glass-ceramic
- Machinability
- Sintering
- Titanium alloy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering