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- Title
Stability of plasma-sprayed TiN and ZrN coatings on graphite for application to uranium-melting crucibles for pyroprocessing.
- Authors
Jang, Junhyuk; Lee, Ho-Se; Lee, Sungjai
- Abstract
The high-temperature stability of ZrN and TiN coatings deposited by plasma spraying on graphite crucibles for melting uranium was investigated. A layer of mixed Zr (or Ti) oxide and nitride was formed with a thickness of 80-100 μm. The chemical stability was evaluated by a melting test with uranium at 1400 °C. The ZrN layer disappeared after the melting test, but the TiN layer remained stable. The thermal stability was evaluated by heating up to 1400 °C; the surface of the crucible coated with ZrN flaked off after this test, whereas the surface of the crucible coated with TiN remained almost intact.
- Subjects
PLASMA spraying; URANIUM; RADIOCHEMICAL analysis; GRAPHITE; SURFACE coatings; THERMAL stability
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2016, Vol 310, Issue 3, p1173
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-016-4947-6