Abstract
Chemical transitions after atmospheric pressure plasma irradiation were investigated by evaluating intermolecular attractions and atomic and molecular reactions. Gold, titanium and stainless-steel alloy samples were ground with #800 grit SiC waterproof paper and nitrogen gas atmospheric plasma irradiation was conducted. The surface free energies of the treated alloys were calculated and compared statistically. X-ray photoelectron spectroscopy analysis was performed.The surface free energies of all metal surfaces treated by plasma irradiation were 1.5-times higher than those of the untreated metals. The energy of the hydrogen bonding component increased, and all alloy surfaces were coated with metal oxide after only a short period of plasma irradiation. The surfaces oxidized by plasma exhibited a high active energy, mainly due to an increase in the hydrogen bonding component. Reactions with oxygen in the air were promoted on the clean surfaces with exposed reactive elements.
| Original language | English |
|---|---|
| Pages (from-to) | 375-380 |
| Number of pages | 6 |
| Journal | Dental Materials Journal |
| Volume | 39 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2020 |
Keywords
- Dental alloys
- Hydrogen bonding
- Oxides
- Photoelectron spectroscopy
- Plasma gases