Investigation of the interaction of liquid tin-lithium alloy with austenitic stainless steel at high temperatures
Ponkratov Y.V. Samarkhanov K.K. Baklanov V.V. Gordienko Y.N. Kenzhina I.E. Bochkov V.S. Tulubayev Y.Y. Orazgaliyev N.A. Saparbek E.
June 2023Elsevier Ltd
Fusion Engineering and Design
2023#191
This paper describes research work to determine the corrosion compatibility of material of the capillary-porous structure (CPS) matrix with a liquid tin-lithium (Sn-Li) alloy at high temperatures. The studies were carried out with the Sn-Li alloy containing 73 at.% of tin and 27 at.% of lithium and samples of 12Cr18Ni10Ti grade austenitic stainless-steel. This steel was proposed as one of the options as a candidate material for the Sn-Li CPS matrix manufacturing. Experiments on the interaction of a liquid Sn-Li alloy with stainless-steel at high temperatures were carried out on the TiGrA experimental facility based on the Mettler Toledo TGA/DSC 3+ thermogravimetric analyzer. The temperature gap in corrosion experiments ranged from 600 °C to 1000 °C, the interaction time for each temperature level was about 10 h. In the course of the work, experiments were carried out to study the compatibility of a Sn-Li alloy in the liquid phase with stainless-steel at temperatures of 600 °C, 800 °C and 1000 °C. Post-experimental studies of stainless-steel samples were carried out using microstructural and energy-dispersive analysis. Based on the results obtained, it was determined that when stainless-steel interacts with an Sn-Li alloy at high temperatures, complex physical-chemical processes occur, such as: selective dissolution of steel components by a liquid alloy; permeation of the liquid alloy into stainless-steel; mass transfer of dissolved metals from a solid metal to a liquid one.
Capillary-porous structure , Corrosion , Microstructural analysis , Plasma-facing material , Sn-Li alloy , Stainless-steel
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Institute of Atomic Energy Branch of the National Nuclear Center of the Republic of Kazakhstan, Kurchatov, Kazakhstan
Tomsk Polytechnic University, Tomsk, Russian Federation
Kazakh-British Technical University, Almaty, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Institute of Atomic Energy Branch of the National Nuclear Center of the Republic of Kazakhstan
Tomsk Polytechnic University
Kazakh-British Technical University
Satbayev University
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