NANOSTRUCTURED PLASMA SPRAY COATINGS

 

Iwona Cieślik1, Ludwik Górski1, Michał Woźniak2

1-National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland.

2- Warsaw University of Technology, Faculty of Material Science and   Engineering, Warsaw, Poland.

 

The presented studies concern high temperature resistant coatings known as thermal barrier coatings (TBC). This type of coatings containing as essential components ceramic layers based on Al2O3 and ZrO2 deposited by plasma spraying technology have numerous applications among others in heat and gaseous turbines, aircraft an high compression engines.

Phase composition and microstructure are studied by X-ray diffraction, electron microscopy and scanning probe microscopy. Coatings show polycrystalline structure with some local fluctuations of chemical and phase composition in nanoareas.

 

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