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Kanyo, Janos E. ; Schafföner, Stefan ; Uwanyuze, R. Sharon ; Leary, Kaitlynn S.:
An overview of ceramic molds for investment casting of nickel superalloys.
In: Journal of the European Ceramic Society.
Bd. 40
(2020)
Heft 15
.
- S. 4955-4973.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2020.07.013
Abstract
Accelerating advancements in technological systems have demonstrated a need for alloys with drastically improved thermomechanical and chemical properties, called superalloys. Ceramic molds are typically used in near-net shape investment casting processes of superalloy components due to their chemical inertness and high-temperature capabilities. Ceramic molds, however, often suffer from shortcomings in vital properties including flexural strength, thermal shock resistance, permeability, dimensional stability, corrosion resistance, and leachability, which have restricted their ability to adequately process modern alloy castings. This study analyses these limitations and illustrates how to address them, particularly regarding ceramic mold and slurry design, processing of shells and cores, material selection, and testing and characterization. By utilizing advanced processing methods including additive manufacturing and gel-casting, more dimensionally accurate and preferentially built molds can be formed. Additionally, by varying the mold composition to achieve more chemically inert structures, reactions with the mold can be mitigated to reduce chemically induced defects.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe > Lehrstuhl Keramische Werkstoffe - Univ.-Prof. Dr.-Ing. Stefan Schafföner |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 31 Mär 2023 10:00 |
| Letzte Änderung: | 31 Mär 2023 10:00 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/75767 |