Laser-remelted plasma coatings

Ryszard Pawlak

doi:10.1117/12.520757

6 October 2003 Laser-remelted plasma coatings

Ryszard Pawlak

Proceedings Volume 5229, Laser Technology VII: Applications of Lasers; (2003) https://doi.org/10.1117/12.520757
Event: Laser Technology VII: Applications of Lasers, 2002, Szczecin, Poland

Abstract

In this article, changes in structural and electrical properties of surface coatings were investigated after laser remelting. The surface Ni-coating under investigation has been obtained by plasma spraying. Surface remelting was carried out under a pulse Nd:YAG laser. Microstructure evolution and phase identification was investigated by means of optical and scanning microscopy and X-ray microanalysis. Laser remelting eliminated defects and porosity of a surface layer and suppressed the oxide phase. The electrical resistivity of a plasma sprayed layer was decreased and the temperature resistivity coefficient was increased due to these structural changes.

Citation Download Citation

Ryszard Pawlak "Laser-remelted plasma coatings", Proc. SPIE 5229, Laser Technology VII: Applications of Lasers, (6 October 2003); https://doi.org/10.1117/12.520757

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