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Interaction of a Ceramic Casting Mold Material of the Al2O3–Al2O3 Composition with a Nickel-Based Superalloy

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Abstract

The paper presents the results of studies of the contact physicochemical interaction of a high-temperature nickel alloy with an investment casting shell material of Al2O3–Al2O3 composition. A comparative assessment of the quality of the surface layer of cast products obtained in conventional ceramic shells of the Al2O3–SiO2 composition has been performed. It is found that, unlike the Al2O3–SiO2 investment casting shell mold, the Al2O3–Al2O3 casting mold interacts with the melt to a much lesser extent. The introduction of non-metallic inclusions occurs to a depth of 10–20 μm (Al2O3–Al2O3 ceramic shell mold), which is noticeably lower than that of cast products obtained in the Al2O3–SiO2 ceramic shell mold (up to 40–70 μm). The roughness value of the casting produced in the Al2O3–Al2O3 ceramic shell mold is 2.5–5.0 μm, and in conventional Al2O3–SiO2 shells this value is 3.5–6.5 μm.

Graphic abstract

The process of interaction of a ceramic shell mold material of the Al2O3–Al2O3 composition with a nickel-based superalloy was investigated.

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Authors and Affiliations

  1. Moscow Aviation Institute, National Research University, Moscow, Russia, 125993

    Maxim S. Varfolomeev

  2. State Research Institute for Chemistry and Technology of Organoelement Compounds, Moscow, Russia, 105118

    Galina I. Shcherbakova

Authors
  1. Maxim S. Varfolomeev
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  2. Galina I. Shcherbakova
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Correspondence to Maxim S. Varfolomeev.

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Varfolomeev, M.S., Shcherbakova, G.I. Interaction of a Ceramic Casting Mold Material of the Al2O3–Al2O3 Composition with a Nickel-Based Superalloy. Inter Metalcast 15, 1309–1316 (2021). https://doi.org/10.1007/s40962-020-00557-5

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  • DOI: https://doi.org/10.1007/s40962-020-00557-5

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