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[4160] Artykuł:

Comparison of the microstructure of the Al2O3-13TiO2 coatings plasma sprayed from nanostructured and conventional powders

Czasopismo: Materials Characterization   Zeszyt: 96, Strony: 234-240
ISSN:  1044-5803
Opublikowano: 2014
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
Anna Góral50.00  
Wojciech Żórawski orcid logoWMiBMKatedra Inżynierii Eksploatacji i Przemysłowych Systemów Laserowych*2545.00  
Lidia Lityńska-Dobrzyńska25.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 45

Pełny tekstPełny tekst     DOI LogoDOI    
Keywords:

Al2O313TiO2 coating  Nanostructure  Plasma spraying 


Abstract:

The microstructure of coatings obtained from nanostructured or conventional Al2O3–13TiO2 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 γ-Al2O3 phase. It has been observed that the grains of γ-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 α-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.


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