Investigation of reactivity between SiC and Nb-1Zr in planned irradiation creep experiments

Technical Report · Fri Aug 01 00:00:00 EDT 1997

DOI:https://doi.org/10.2172/543203· OSTI ID:543203

Lewinsohn, C. A.; Hamilton, M. L.; Jones, R. H.

Thermodynamic calculations and diffusion couple experiments showed that SiC and Nb-1Zr were reactive at the upper range of temperatures anticipated in the planned irradiation creep experiment. Sputter-deposited aluminum oxide (Al{sub 2}O{sub 3}) was selected as a diffusion barrier coating. Experiments showed that although the coating coarsened at high temperature it was an effective barrier for diffusion of silicon from SiC into Nb-1Zr. Therefore, to avoid detrimental reactions between the SiC composite and the Nb-1Zr pressurized bladder during the planned irradiation creep experiment, a coating of Al{sub 2}O{sub 3} will be required on the Nb-1Zr bladder.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 543203
• Report Number(s): DOE/ER-0313/22; ON: DE97008797; TRN: 97:020242
• Resource Relation: Other Information: PBD: Aug 1997; Related Information: Is Part Of Fusion materials semiannual progress report for period ending June 30, 1997; PB: 358 p.
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
36 MATERIALS SCIENCE
40 CHEMISTRY
SILICON CARBIDES
ACTIVATION ENERGY
THERMONUCLEAR REACTOR MATERIALS
PHYSICAL RADIATION EFFECTS
NIOBIUM
ZIRCONIUM
PROGRESS REPORT
CREEP