Affiliation:
1. Institute of Metal Research, Chinese Academy of Sciences
Abstract
Abstract
The TiB2 coating deposited by magnetron sputtering on the Ti6Al4V simulated blade tip with a dense fiber-like microstructure has the adhesion strength grade of HF1. High-speed rubbing results showed that the TiB2 coating could inhibit the adhesive transfer of the Al-hBN seal coating at 300 m/s. It was found that the tribological oxidation of TiB2 coating led to the TiB2/fused Al interface reaction by characterization of the interface microstructure of the Al-adhesive blade tip. The thin interface reaction interlayer mainly consists of TiAl3 phase. The large thermal stress at TiAl3/TiB2 interface makes the interface reaction layer with the Al-adhesive transfer layer easily peel off from the blade tip. Thus, the Al-adhesive transfer is always at a lower level.
Publisher
Research Square Platform LLC
Reference45 articles.
1. Interacting force estimation during blade/seal rubs;Mandard R;Tribology International,2015
2. E. Lugscheider, J. Zwick, M. Hertter, D. Sporer, Control of coating properties of abradable seals by on-line process diagnostics, International Thermal Spray Conference (ITSC), Basel, Switzerland, 2005.
3. Material transfer behaviour between a Ti6Al4V blade and an aluminium hexagonal boron nitride abradable coating during high-speed rubbing;Xue WH;Wear,2015
4. Adhesive transfer in aero-engine abradable linings contact;Fois N;Wear,2013
5. Role of third bodies in friction and wear of protective coatings;Singer IL;Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films,2003