Abstract
Aluminum and Fe3O4 reacts readily in what is known as thermite reaction to produce large amount of heat. Attempts were made to coat Fe-oxide on A319 cast aluminum alloy employing a high power laser to exploit this reaction. High-speed, high-resolution infrared thermography was employed to study the thermal conditions during the laser treatment. Parallel experiment using a less exothermic oxide (FeO) and the same substrate further emphasized development of higher temperature during highly exothermic reaction. The cooling rate calculated via both steady state and non-steady state relations were one order of magnitude different, which was supported by microstructural observations. Transmission electron microscopy revealed formation of aluminides as a result of reaction between iron oxide and aluminum alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 404-413 |
| Number of pages | 10 |
| Journal | Materials Science and Engineering: A |
| Volume | 390 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jan 15 2005 |
Funding
The authors acknowledge the infrared thermography work sponsored by the Assistant Secretary of Energy Efficiency and Renewable Energy, Office of Transportation Technologies, as part of the High Temperature Materials Laboratory User Program, and transmission electron microscopy facility at the Oak Ridge National Laboratory through the Shared Research Equipment (SHaRE) User Center at the Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.
| Funders | Funder number |
|---|---|
| Assistant Secretary of Energy Efficiency and Renewable Energy | |
| Office of Transportation Technologies | |
| U.S. Department of Energy | DE-AC05-00OR22725 |
| Oak Ridge National Laboratory |
Keywords
- A319
- Infrared thermography
- Iron oxides
- Laser coating
- Thermite reaction