3D printing of CaO-based ceramic core using nanozirconia suspension as a binder

The 3D printing of a ceramic core with nanoceramic suspension as a binder was performed to investigate a novel method for the fabrication of a complex-shaped ceramic core. Green bodies were printed using CaO powder as a precursor material and nanozirconia-absolute ethyl alcohol solution suspension a...

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Bibliographic Details
Published inJournal of the European Ceramic Society Vol. 37; no. 15; pp. 5119 - 5125
Main Authors Zhao, Huoping, Ye, Chunsheng, Fan, Zitian, Wang, Changming
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2017
Subjects
3D printing
CaO
Ceramic core
Hydration resistance
Nanozirconia suspension
CaO
Nanozirconia suspension
Ceramic core
Hydration resistance
3D printing
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Summary:The 3D printing of a ceramic core with nanoceramic suspension as a binder was performed to investigate a novel method for the fabrication of a complex-shaped ceramic core. Green bodies were printed using CaO powder as a precursor material and nanozirconia-absolute ethyl alcohol solution suspension as a binder. The green bodies were sintered at 1300–1500°C for 2h. The effects of binder saturation level on the properties of the sintered bodies were investigated. Increasing the binder saturation level caused decreases in the linear shrinkage of the sintered bodies, but increases in hydration resistance and bending strength. The nanozirconia particles were deposited on the surfaces of the CaO particles and filled the pores of green bodies, and then formed a high melting temperature CaZrO3 layer with the CaO at the surfaces of the CaO grains, which improved the hydration resistance of the CaO-based ceramic core parts.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2017.06.050