The influence of Si on oxidation resistance of aluminide coatings 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 isothermal oxidation of TiAlNb intermetallic alloy. Design/methodology/approach: : The isothermal oxidation resistance tests were done in the chamber furnace at 900ºC for 500h time in the air atmosphere. The structure of coatings was investigated by light and scanning microscopy. The chemical composition of coatings and scales was investigated by EDS method and XRD phase analysis was used as well. Findings: In case of all the samples, the increase of the mass has been observed, as a result of the scale growth. The smallest mass changes have been detected in samples containing the coatings formed from 12,5% Si slurries. The largest weight loss took place in samples with the coatings created in 20, 40 and 60% wt silicon slurries. The oxidation test showed increasing of oxidation resistance of TiAl alloy with aluminide coatings and presence of products of oxidation - Al2O3 on surface. 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; oxidation resistance

PL

obróbka powierzchni; odporność na utlenianie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 459--462
• Opis fizyczny: Bibliogr. 15 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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