Copper Oxides on a Cu Sheet Substrate Made by Laser Technique
Małgorzata Musztyfaga-Staszuk1,2, Damian Janicki1, Katarzyna Gawlińska-Nęcek3
1Welding Department, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland.
Materials (Basel, Switzerland)
|September 2, 2020
Summary
Laser oxidation of copper sheets produces copper oxide layers. Diode lasers yield results comparable to thermal oxidation, while Yb:YAG disc lasers offer superior phase uniformity for advanced applications.
Area of Science:
- Materials Science
- Laser Physics
- Surface Engineering
Background:
- Copper oxides are crucial for various electronic and catalytic applications.
- Traditional thermal oxidation methods have limitations in control and uniformity.
- Laser-based methods offer potential for precise surface modification.
Purpose of the Study:
- To investigate the formation of copper oxide layers using diode and Yb:YAG disc lasers.
- To compare laser-produced oxide layers with those from thermal oxidation.
- To characterize the structural, chemical, and electrical properties of the oxide layers.
Main Methods:
- Laser oxidation (diode and Yb:YAG disc lasers)
- Thermal oxidation (IR furnace)
- Scanning Electron Microscopy (SEM)
- Atomic Force Microscopy (AFM)
- Hot-point probe
- Spectrophotometry (Kubelka-Munk method)
- Transmission Electron Microscopy (TEM)
- X-ray Diffraction (XRD)
Main Results:
- Controlled laser oxidation produced mixed Cu₂O and CuO phases.
- Diode laser oxidation yielded phase composition similar to thermal oxidation.
- Yb:YAG disc laser oxidation resulted in high phase uniformity across the layer cross-section.
- SEM, AFM, TEM, and XRD confirmed layer topography, composition, and phase.
Conclusions:
- Laser oxidation is a viable method for producing copper oxide layers.
- Diode lasers provide a comparable alternative to thermal oxidation.
- Yb:YAG disc lasers enable highly uniform copper oxide layer formation, suitable for advanced applications.
