Features of the manufacturing technology of highly refractory ceramic molds for castings from γ-TiAl alloys

Rassokhina L.I., Bityutskaya O.N., Gamazina M.V., Kochetkov A.S.
UDC
666.7
DOI
10.18577/2307-6046-2020-0-2-31-40
Article PDF (Russian) (905.26 KB)
How to cite
Rassokhina L.I., Bityutskaya O.N., Gamazina M.V., Kochetkov A.S. Features of the manufacturing technology of highly refractory ceramic molds for castings from γ-TiAl alloys // Proceedings of VIAM. 2020. No. 2. DOI: 10.18577/2307-6046-2020-0-2-31-40. URL: https://test.viam.ru/en/journal/2020/2/4
Keywords
the binder sol of yttrium oxide, the binder sol of aluminium oxide, water-based binders, highly resistant ceramic molds, titanium intermetallics.
Abstract

The results of research on new modern materials for the manufacture of highly refractory ceramic molds for the production of castings from γ-TiAl alloys are presented. Technological, physical and chemical properties of yttrium oxide binder Sol (Y2O3) and aluminum oxide binder Sol (Al2O3) were tested.

Based on the results of studies of the main properties of yttrium oxide Sol, it was decided to stop further work with the binder as unpromising in terms of determining the possibility of its use for the manufacture of ceramic molds for the manufacture of castings from γ-TiAl alloys at the Leicomelt 5 furnace.

According to the study of the basic properties of water the binder Sol of aluminum oxide were obtained satisfactory results on the strength of the ceramic layer, it sintering during high-temperature firing, therefore it was decided to continue work on the study of the properties of a Sol of aluminum oxide to further develop the technology for the manufacture of ceramic molds for casting of γ-TiAl alloys on the Leicomelt 5 furnace.

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