Abstract
Solidification of hydroxyapatite (HA:Ca10(PO4) 6(OH)2) and its bonding with titanium (Ti) was achieved simultaneously by using the hydrothermal hot-pressing method at temperatures as low as 150°C with no special surface treatment of Ti. A mixture of calcium hydrogen phosphate dihydrate and calcium hydroxide was used as the starting powder material for solidifying HA. Three-point bending tests were conducted to obtain an estimate of the fracture toughness for the HA/Ti interface as well as for the HA ceramics only. The fracture toughness tests showed that the induced crack from the pre-crack tip deviated from the HA/Ti interface and propagated into the HA. The fracture toughness determined on the bonded HA/Ti specimen was close to that of the HA ceramics only (∼0.30 MPa m1/2).
Original language | English |
---|---|
Pages (from-to) | 767-770 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 52 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2005 Apr 1 |
Keywords
- Bonding
- Hydrothermal
- Hydroxyapatite
- Titanium
- Toughness
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys