Surface studies on aluminized and thermally oxidized superalloy 690 substrates interacted with simulated nuclear waste and sodium borosilicate melt

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872782· OSTI ID:22271045

Sengupta, P.; Dutta, R. S.; Dey, G. K. ^[1]; Kshirsagar, R. J. ^[2]; Mishra, R. K.; Kaushik, C. P. ^[3]

---

1. Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)
2. High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)
3. Waste Management Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)

Aluminized and thermally oxidized Ni-Cr-Fe based superalloy 690 substrates with Al{sub 2}O{sub 3} layer on top have been exposed in nitrate based environment (simulated high level nuclear liquid waste) at 373 K for 216 hours and sodium borosilicate melt at 1248 K for 192 hours. The surfaces of exposed samples have been characterized by using Electron probe micro-analyzer (EPMA). Elemental X-ray mapping on coated specimen that exposed in simulated nuclear waste solution revealed that the surface is enriched with Ni, Cr and Al. X-ray mapping on surface of the specimen that interacted with sodium borosilicate melt indicated that the surface is composed of Al, Fe, Ni and Cr.

• OSTI ID: 22271045
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALUMINIUM OXIDES
BORON SILICATES
ELECTRON MICROPROBE ANALYSIS
ELECTRON PROBES
INCONEL 690
LIQUID WASTES
MAPPING
NITRATES
RADIOACTIVE WASTES
SIMULATION
SODIUM COMPOUNDS
SUBSTRATES
SURFACES
X-RAY FLUORESCENCE ANALYSIS