The effect of plasma torch power on the microstructure and phase composition of alumina coatings

• Autorzy: Marcinauskas, L. , Valatkevičius, P.
• Języki publikacji: EN

Abstrakty

EN

Alumina coatings were obtained by the atmospheric plasma spraying using Al2O3 nanopowders. The powders were injected into the anode zone of the torch. The microstructures and phase compositions of the coatings were determined by the scanning electron microscopy and X-ray diffraction. The results indicated that the higher the plasma torch power, the lower the surface roughness is. The as-sprayed coatings are composed of ?-Al2O3 and ?-Al2O3, while the original powders were composed of ?-Al2O3 and ?-Al2O3 phases. The amount of ?-Al2O3 in the coatings increases from 56.52% to 100% if the plasma torch power is increased from 3.2 kW to 4.5 kW.

Słowa kluczowe

EN

Al2O3; plasma sprayed coating; plasma torch

• Czasopismo: Materials Science Poland
• Rocznik: 2010
• Tom: Vol. 28, No. 2
• Strony: 451--458
• Opis fizyczny: Bibliogr. 26 poz.

Twórcy

autor

Marcinauskas, L.

autor

Valatkevičius, P.

• Physics Department Kaunas University of Technology Studentu 50 LT-51368, Kaunas Lithuania

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