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Proceedings Paper

Structure and property changes of air-sprayed NiCrAlY overlay coatings after laser remelting
Author(s): Krystyna Kobylanska-Szkaradek
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Paper Abstract

The analysis concerned the influence of laser melting with powder density 0.126x109 W/m2 scanning rate 5 m/min on the transfer from liquid to solid state and structure stability in solid state, thermal conductivity, resistance to thermal cyckling of NiCrAlY plasma sprayed coatings on nickel base heat-resistant alloy. It was stated that laser remelting causes structure changes and porosity disappearance, which is the reason for the increase of thermal conductivity of remelted coatings and at the same time decrease of interaction efficiency as thermal barriers and increase of exploatation stability.

Paper Details

Date Published: 2 November 2000
PDF: 6 pages
Proc. SPIE 4238, Laser Technology VI: Applications, (2 November 2000); doi: 10.1117/12.405967
Show Author Affiliations
Krystyna Kobylanska-Szkaradek, Silesian Technical Univ. (Poland)


Published in SPIE Proceedings Vol. 4238:
Laser Technology VI: Applications

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