Abstract
Aluminium is one of the common elements that has attracted researcher all over the world because of the light weight to strength, but the hardness values and wear resistance is low which limited usage in the area of applications. This research work is based on the surface hardening of aluminum by laser alloying with binary combinations of molybdenum and zirconium metallic powders. The laser was performed with 4.4 kW Rofin Sinar Nd:YAG. The laser alloyed surfaces produced were characterized using standard techniques. The electrochemical, wear and micro-hardness tests were used to determine the possible area of application. The results showed that laser alloying of aluminium with molybdenum and zirconium metallic powders enhanced the hardness values, wear and corrosion resistance. The hardness values of 6-times and wear resistance of 16-stimes were obtained over the substrate at optimum condition of 50%Mo and 50% Zr, laser power of 4 kW and speed of 1.4 m/min. The various microstructures obtained were the main factor responsible for the improvement in properties.
| Original language | English |
|---|---|
| Pages (from-to) | 126-139 |
| Number of pages | 14 |
| Journal | International Journal of Electrochemical Science |
| Volume | 11 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2016 |
| Externally published | Yes |
Keywords
- Control
- Corrosion rate
- Hardness
- LSA
- Wear
ASJC Scopus subject areas
- Electrochemistry