2 November 2000 Structure and property changes of air-sprayed NiCrAlY overlay coatings after laser remelting
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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.
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Krystyna Kobylanska-Szkaradek, Krystyna Kobylanska-Szkaradek, } "Structure and property changes of air-sprayed NiCrAlY overlay coatings after laser remelting", Proc. SPIE 4238, Laser Technology VI: Applications, (2 November 2000); doi: 10.1117/12.405967; https://doi.org/10.1117/12.405967
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