Development and Microstructural Characterization of Hard Coatings for Damping Applications in Aerospace Systems
Abstract
The main goal of this research was to improve the vibration damping performance of the Titanium (Ti) substrates by surface modification of the substrates with Titanium nitride (TiN) thin film coatings. TiN thin films were deposited on Ti substrates by pulsed laser deposition (PLD) and radio frequency (RF) magnetron sputtering. Damping ratios of the TiN-coated beams were 1-2 orders of magnitude greater than uncoated beams. Additionally, the damping amplitudes of the TiN coated beams have been observed to return to zero position faster than the uncoated beam. The energy dissipation due to internal friction at the beam-coating interface and inter-lamellae interface within TiN coatings are the mechanisms responsible for reducing vibration amplitudes of TiN-coated beams. Corrosion properties of TiN thin films were investigated. Electrochemical results indicated that TiN films bring about a significant improvement in the corrosion resistance of the Ti disks in phosphate buffer saline (PBS) solution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 2020
- Accession Number
- AD1192771
Entities
People
- D. Kumar
- Jacob Som
- Kausjik Srakar
- Manosi Roy
- Panupong Jaipan
Organizations
- North Carolina Agricultural and Technical State University