The influence of Si on structure of aluminide coatings deposited on TiAl alloy

• Autorzy: Goral M. , Moskal G. , Swadzba L.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Increasing oxidation resistance of TiAl intermetallic alloy by depositing aluminide coating by slurry method and investigation of the influence of Si addition on structure of obtained coatings Design/methodology/approach: The structure of coatings was investigated by light scanning microscopy. The chemical composition of coatings was investigated by EDS method and XRD phase analysis was used as well Findings: The investigation has showed that the thickness of the coatings ranged from 30 to 40 µm. The structure of the silicon-modified aluminide coatings is as follows:- the outer zone consisting of TiAl3 phase and titanium silicides- - the middle zone consisting of columnar titanium silicides in phase TiAl3 matrix the inner zone consisting of TiAl2 phase The analysis of the average chemical composition of the outer zone exhibited the gradual increase of the silicon content along with the increase of this element in the slurry. The phase analysis has confirmed Ti5Si3 creation and, in case of the high silicon content in slurry, also other silicides: types Ti5Si4,TiSi2,TiSi Practical implications: The slurry method can be applied in aerospace and automotive industry as low-cost technology of producing of aluminide coatings on intermetallics Originality/value: New method of depositing of aluminide coatings on TiAl alloys

Słowa kluczowe

EN

surface treatment; aluminide coatings

PL

obróbka powierzchni; powłoki aluminidkowe

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 463--466
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Goral M.

• Department of Materials Science, Silesian University of Technology ul. Krasinskiego 8, 40-019 Katowice, Poland

autor

Moskal G.

• Department of Materials Science, Silesian University of Technology ul. Krasinskiego 8, 40-019 Katowice, Poland

autor

Swadzba L.

• Department of Materials Science, Silesian University of Technology ul. Krasinskiego 8, 40-019 Katowice, Poland

Bibliografia

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