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[57490] Artykuł:

Study of the microstructure of plasma sprayed coatings obtained from Al2O3-13TiO(2) nanostructured and conventional powders

Czasopismo: Materials Characterization   Tom: 96, Strony: 234-240
ISSN:  1044-5803
Wydawca:  ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
Opublikowano: Pażdziernik 2014
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
A. Goral33.00  
Wojciech Żórawski orcid logoWMiBMKatedra Inżynierii Eksploatacji i Przemysłowych Systemów Laserowych*3345.00  
L. Litynska-Dobrzynska33.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 45
Klasyfikacja Web of Science: Article

DOI LogoDOI     Web of Science Logo Web of Science    
Keywords:

Al2O3-13TiO(2) coating  Nanostructure  Plasma spraying 


Abstract:

The microstructure of coatings obtained from nanostructured or conventional Al2O3-13TiO(2) powders and deposited by plasma spraying technique on low-carbon steel was examined by transmission electron microscopy techniques. The dominating phase in both coatings was gamma-Al2O3 phase. It has been observed that the grains of gamma-Al2O3 grew in various shapes and sizes, that are particularly visible in the case of coating sprayed from nanostructured powder. The coatings obtained from the fully melted conventional powders exhibited a typical lamellar microstructure, into which the strips of TiO2 phase were extended. The microstructure of coatings produced from agglomerates of nanostructured particles also revealed the regions consisting of partially melted alpha-Al2O3 powders surrounded by the net-like structure formed from fully melted oxides that improved the coating properties. Along with the observed morphology diversity some changes in the chemical composition on the cross sections of obtained coatings have been also noticed. (C) 2014 Elsevier Inc All rights reserved.


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