Chemical interaction of Y2O3 coating with U-Zr-Nd metallic fuel during casting

Seong Jun Ha, Young Kook Lee, Seoung Woo Kuk, ISeul S. Ryu, Sang Yeob Lim, Hyun Gil Kim, Jeong Yong Park

Research output: Contribution to journalArticlepeer-review


The interaction between molten metals and ceramic coating materials was studied to minimize fuel material loss and develop a reusable crucible for fuel melts. U-Zr-Nd alloy and pure Nd were used as metal melts while the substrate pellets were Y2O3-plasma-spray-coated graphite. The metals were melted using the sessile drop test method on Y2O3-coated graphite pellets. All Y2O3 coating layers of the specimens detached from the graphite specimens and attached to the molten metals because of their reactivity. Furthermore, a microstructural analysis of the specimens was performed after droplet testing. The results revealed that (Nd,Y)2O3 compounds were formed by the reaction between Nd and Y2O3 coating during the U-Zr-Nd fuel melting on the substrate.

Original languageEnglish
Pages (from-to)4751-4757
Number of pages7
JournalCeramics International
Issue number3
Publication statusPublished - 2023 Feb 1

Bibliographical note

Funding Information:
This work was supported by the Nuclear Research and Development Program of the National Research Foundation Grant funded by the Ministry of Science and ICT in Korea ( NRF-2017M2A8A5014889 ) and the KAERI Institutional Program (Project No. 524490-22 ).

Publisher Copyright:
© 2022 The Authors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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