AVS 71 Session SE-ThP: Advanced Surface Engineering Poster Session

This Study Investigates the Development of Multilayer Nano Nitride Coatings for Enhanced Corrosion and Wear Resistance, Fabricated Using the Magnetron Sputtering Technique. The Multilayer Coatings, Consisting of Alternating Thin Nitride Layers with Tailored Stoichiometries and Thicknesses, Are Designed to Improve Mechanical Properties and Protect Substrates from Aggressive Environments. The Corrosion Performance of the Coatings Was Assessed Using Electrochemical Impedance Spectroscopy (Eis), a Technique That Provides Valuable Insight Into the Electrochemical Behavior and Protective Efficiency of the Coatings in Corrosive Media. The Eis Results Demonstrated a Marked Improvement in the Corrosion Resistance of the Multilayer Coatings Compared to Uncoated Substrates and Single-Layer Coatings, Indicating Their Superior Ability to Act as a Barrier Against Corrosive Agents.

Nanoindentation Was Employed to Evaluate the Mechanical Properties, Particularly the Hardness of the Coatings. This Technique Allowed for Precise Hardness Measurements at the Nanoscale, Revealing a Significant Increase in Hardness for the Multilayer Coatings Compared to Both the Substrate and Single-Layer Nitride Coatings. The Improved Hardness Is Attributed to the Unique Microstructure and the Stress Distribution Across the Multilayer Design, Which Enhances Wear Resistance and Mechanical Durability.

the Coatings' Microstructure, Phase Composition, and Adhesion Strength Were Further Characterized by X-Ray Diffraction (Xrd), Scanning Electron Microscopy (Sem), and Scratch Testing, Confirming the High Quality of the Multilayer Coatings and Their Strong Interlayer Bonding. Overall, the Multilayer Nitride Coatings Exhibited Enhanced Mechanical and Electrochemical Properties, Providing Excellent Corrosion and Wear Resistance. These Results Suggest That Magnetron Sputtering, Combined with Eis and Nanoindentation, Is an Effective Approach for Developing Advanced Nitride Coatings Suitable for Applications in Harsh Industrial Environments Requiring High Durability and Long-Term Performance. This Study Will Help in Marine Applications for Future Purposes and Be Beneficial.

Keywords: Magnetron Sputtering, Nitride Coatings, Hardness, Corrosion, Marine Application.