Original scientific paper

https://doi.org/10.21278/TOF.502080625

Improvement of Titanium Cold Spray Coating Adhesion by Shot Peening

Martin Vicen orcid.org/0000-0002-9904-346X ; Faculty of Mechanical Engineering, University of Žilina, Slovakia *
Libor Trško orcid.org/0000-0002-9696-6939 ; Research Centre, University of Žilina, Žilina, Slovakia & VSB-TU Ostrava, CPIT – Centre for Advanced Innovation Technologies, Czech Republic
Otakar Bokůvka ; Research Centre, University of Žilina, Žilina, Slovakia
Eva Nogová ; Research Centre, University of Žilina, Žilina, Slovakia
Anna Góral ; Institute of Metallurgy and Materials Science, Polish Academy of Science, Krakow, Poland
Wojciech Żórawski ; Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Kielce, Poland

* Corresponding author.

Abstract

Shot peening was applied to quenched and highly tempered C55 structural steel as a pre-treatment to titanium coating cold spray deposition with the aim of improving the coating’s adhesion during cyclic loading. Applying titanium cold spray directly onto the steel surface caused significant plastic deformation of the substrate, resulting in the creation of discontinuities on the coating/substrate interface. When shot peening was applied prior to the cold spraying, the work-hardened surface layer served as a more suitable substrate, avoiding the creation of major interface discontinuities. Fatigue resistance of the shot-peened specimens was improved by up to 20% and no coating delamination was observed in the regions of fatigue crack initiation and propagation.

Keywords

cold spray; Ti coating; adhesion; shot peening; fatigue

Hrčak ID:

346600

URI

https://hrcak.srce.hr/346600

Publication date:

9.4.2026.

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