Abstract
Laser treatment of an aluminum composite surface was carried out to improve tribological properties and corrosion resistance at the surface. The workpiece consists of 15% SiC and pure aluminum, and it is produced by hot pressing. The characteristics of the laser-treated surface were examined using optical and scanning electron microscopes, energy dispersive spectroscopy, X-ray diffraction, a micro-tribometer, and a potentiostat. Laser treatment was carried out by following a spiral scanning track at the surface. This provides a self-annealing effect of the lately formed laser tracks on the initially formed tracks while lowering the cooling rates at the surface. It was found that laser-treated surfaces are free from asperities such as large-scale cracks and voids. Laser treatment improves the hardness of the surface because of the dense layer formation in the surface region. The friction coefficient of the laser-treated surface attains lower values than that corresponding to the untreated surface. Laser treatment improves the corrosion resistance of the surface.
| Original language | English |
|---|---|
| Pages (from-to) | 495-503 |
| Number of pages | 9 |
| Journal | Science and Engineering of Composite Materials |
| Volume | 23 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Sep 2016 |
Bibliographical note
Publisher Copyright:© 2016 Walter de Gruyter GmbH, Berlin/Boston.
Keywords
- aluminum composite
- corrosion resistance
- friction coefficient
- laser
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry