Abstract
Aiming at developing a dental titanium alloy with better mechanical properties and machinability than unalloyed titanium, a series of Ti-Nb alloys with Nb concentrations up to 30% was made. They were cast into magnesia-based molds using a dental casting machine and the mechanical properties and grindability of the castings were examined. The hardness of the alloys with Nb concentrations of 5% and above was significantly higher than that of titanium. The yield strength and tensile strength of the alloys with Nb concentrations of 10% and above were significantly higher than those of titanium, while the elongation was significantly lower. A small addition of niobium to titanium did not contribute to improving the grindability of titanium. The Ti-30%Nb alloy exhibited significantly better grindability at low grinding speed with higher hardness, strength, and Young's modulus than titanium, presumably due to precipitation of the w phase in the β matrix.
| Original language | English |
|---|---|
| Pages (from-to) | 328-342 |
| Number of pages | 15 |
| Journal | Dental Materials Journal |
| Volume | 22 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2003 Sept |
Keywords
- Grindability
- Mechanical property
- Titanium alloy