Abstract
A sintered Co-Cr-Mo/Bioglass® composite coating, developed for medical implant application, is examined and compared to plasma-sprayed and sintered monolithic Co-Cr-Mo coatings. In addition to microstructure and wear resistance analysis, the bioactivities and corrosion behaviours of various coatings are assessed using simulated body fluid (SBF) immersion. The sintered Co-Cr-Mo/Bioglass® composite and monolithic Co-Cr-Mo coatings have more porous structure than the plasma sprayed Co-Cr-Mo coating. Although the Co-Cr-Mo/Bioglass® composite coating has adequate bonding between Co-Cr-Mo powder and glass particles, the wear resistance is lower than the plasma sprayed Co-Cr-Mo and Stellite 21 substrate. After SBF immersion, calcium is present on the Co-Cr-Mo/Bioglass composite coating, but not on the Co-Cr-Mo coating. It indicates the formation of an apatite layer on the Co-Cr- Mo/Bioglass composite coating and potentially better bioactivity than the monolithic coatings.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 264-281 |
| Number of pages | 18 |
| Journal | International Journal of Surface Science and Engineering |
| Volume | 8 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - 2014 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films
Keywords
- Bioactivity
- Composite
- Microhardness
- Plasma spraying
- Sintering
- Wear