Abstract
Plasma spray deposition of low carbon steel specimens was carried out under three different conditions (denoted HA-1, HA-2, HA-3). To determine the influence of hydroxyapatite (HA) coatings on fatigue lives of machined low carbon steel specimens, fatigue experiments using a symmetrical cyclical bending load were carried out. It was found out, all HA coatings led to prolongation of the fatigue lives as compared to specimens without coatings (by 43%, 23%, and 38%, respectively). Subsequent fractographic analysis confirmed that the fracture micromorphology of individual HA coatings is influenced by different spraying conditions, and the fatigue cracks in coated bodies initiate underneath the coatings, i.e., on the steel substrate surface.
| Original language | English |
|---|---|
| Pages (from-to) | 205-215 |
| Number of pages | 11 |
| Journal | Acta Technica CSAV (Ceskoslovensk Akademie Ved) |
| Volume | 52 |
| Issue number | 3 |
| Publication status | Published - 2007 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Mechanics of Materials
- Electrical and Electronic Engineering
Keywords
- Fatigue test
- Fractographic analysis
- Implants
- Plasma sprayed hydroxyapatite coatings
- Residual stress
- Scanning electron microscopy