Analysis of thermal-chemical interactions at the ceramic mould – molten nickel alloy interface

• Autorzy: Binczyk F. , Śleziona J. , Michalska J.
• Języki publikacji: EN

Abstrakty

EN

A model of thermal-chemical interactions at the ceramic mould – molten nickel alloy interface was described. Studies were carried out on mould coated with a layer of modifier based on zirconium silicate and cobalt aluminate. The thermodynamic calculations indicated the possibility of chemical reactions taking place between the chemically active nickel alloy constituents (Al, Ti, Hf, Ta and Nb) and components of the modifying coating. The result of such interactions is possible formation on the surface of mould and casting of "new compounds" which can be the source of casting defects, like burns-on, pitting, etc., the fact proved by extensive X-ray microanalysis. In addition, the possibility of crack formation on mould surface and of the molten metal penetration into thus formed crevices was observed.

Słowa kluczowe

EN

nickel superalloys; chemical reaction; casting defects; thermodynamic potential

PL

stopy niklu; reakcja chemiczna; potencjał termodynamiczny; wady odlewów

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 4
• Strony: 5--8
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Binczyk F.

• Silesian University of Technology, Chair of Materials Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

autor

Śleziona J.

• Silesian University of Technology, Chair of Materials Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

autor

Michalska J.

• Silesian University of Technology, Chair of Materials Science, Krasińskiego Str. 8, 40-019 Katowice, Poland

Bibliografia

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• [7] F. Binczyk, J. Śleziona, Macrostructure of IN-713C superalloy after volume modification, Archives of Foundry Engineering, Vol. 9, issue 2, 2009, pp.105-108.
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