Abstract
The aim of this study was to develop Au-Pt-Pd-Si alloys with metal-resin bonding properties optimized for dental restorations. The amount of silicon added ranged from 0.00-0.54 wt.% . The Au-Pt-Pd-Si alloys were manufactured using an arc melting furnace. They were homogenized at 800°C in air and cold rolled to a 1 mm thickness. The changes in the surface morphology and oxide layer formation were analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy, electron probe microanalysis and X-ray photoelectron spectroscopy before and after oxidation treatment. The mechanical properties of the alloys were evaluated using micro-hardness and shear bonding tests. The surface oxide layer was mostly composed of silicon dioxide and metallic gold. The microhardness of the Au-Pt-Pd-Si alloys increased as a function of the silicon concentration. The shear bonding strength was significantly higher (9.30 MPa) at 0.54 wt.% silicon (p < 0.05).
Original language | English |
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Pages (from-to) | 1503-1508 |
Number of pages | 6 |
Journal | International Journal of Materials Research |
Volume | 103 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2012 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry