Interaction of alumina with liquid Pb sub(83)Li sub(17) alloy

• Published in: Fusion engineering and design Vol. 89; no. 11; pp. 2554 - 2558
• Main Authors: Jain, Uttam, Mukherjee, Abhishek, Sonak, Sagar, Kumar, Sanjay, Mishra, Ratikant, Krishnamurthy, Nagaiyar
• Format: Journal Article
• Language: English
• Published: 01.11.2014
• Subjects: Aluminum oxide; Drag; Liquids; Lithium; Magnetohydrodynamics; Operating temperature; Reactors; Structural materials
• ISSN: 0920-3796
• DOI: 10.1016/j.fusengdes.2014.06.007

Eutectic lead lithium (Pb sub(83)Li sub(17)) alloy is being considered a coolant, neutron multiplier and tritium breeder for International Thermonuclear Experimental Reactor (ITER) and Fusion Power Reactors (FPR). In order to reduce the magneto-hydrodynamic drag (MHD) and to prevent corrosion of structural materials due to the flow of lead lithium (Pb sub(83)Li sub(17)) alloy, alumina (Al sub(2)O sub(3)) is proposed as a candidate ceramic coating material. Interaction of liquid Pb sub(83)Li sub(17) alloy with Al sub(2)O sub(3) at the operating temperature of these reactors is therefore an important issue. The present paper deals with the characterization of Pb sub(83)Li sub(17) alloy and its interaction with Al sub(2)O sub(3) at the reactor operating temperature. The interaction was studied using EPMA, XRD and thermal analysis technique. The result indicates that alumina can interact with Pb sub(83)Li sub(17) alloy at 550 [degrees]C even in high purity argon atmosphere. The role of oxygen in the interaction process has also been discussed.