Related Experiment Video
Updated: Jul 16, 2025
09:12
Production of Single Tracks of Ti-6Al-4V by Directed Energy Deposition to Determine the Layer Thickness for Multilayer Deposition
Published on: March 13, 2018
9.3K
Multi-layer structure of Inconel 625 coatings prepared by magnetron sputtering.
Jinghua Feng1, Guangcui Yuan2,3, Li Mao1
1Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Surface & Coatings Technology
|September 18, 2023
Summary
Researchers used X-ray and neutron reflectometry to reveal the detailed vertical structure of Inconel 625 coatings. They identified distinct sublayers and surface oxide layers, crucial for understanding material properties and improving corrosion resistance.
Area of Science:
- Materials Science
- Surface Science
- Nanotechnology
Background:
- The interface and oxide layers of Inconel 625 coatings significantly affect material properties, particularly corrosion resistance.
- Understanding the detailed vertical structure of these thin layers is challenging due to experimental limitations.
Purpose of the Study:
- To reveal the multi-layer structure of Inconel 625 films prepared by magnetron sputtering.
- To characterize the thickness and composition of each layer with atomic-scale resolution.
Main Methods:
- X-ray reflectometry (XRR) and neutron reflectometry (NR) were employed to analyze the film's vertical structure.
- These techniques allowed for the determination of layer thicknesses and compositions.
Main Results:
- A ~2 nm Cr-rich Inconel sublayer was identified beneath the main Inconel 625 film.
- A ~2 nm NiO surface oxide layer was observed on the main film.
- A ~2 Å contamination layer was detected between the sapphire substrate and the Inconel film, even after cleaning.
Conclusions:
- The study provides atomic-scale insights into the multi-layered structure of Inconel 625 coatings.
- Findings offer guidance for future research aimed at enhancing the corrosion resistance of these coatings.
