THE COMPATIBILITY OF MARTENSITIC STEELS WITH LIQUID PB-17LI

Citation
N. Simon et al., THE COMPATIBILITY OF MARTENSITIC STEELS WITH LIQUID PB-17LI, Journal of nuclear materials, 254(2-3), 1998, pp. 185-190
Citations number
6
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
ISSN journal
00223115
Volume
254
Issue
2-3
Year of publication
1998
Pages
185 - 190
Database
ISI
SICI code
0022-3115(1998)254:2-3<185:TCOMSW>2.0.ZU;2-S
Abstract
Mass transfer experiments in liquid Pb-17Li have been conducted in an anisothermal container with pure metals, Fe and Cr, and with Fe-Cr ste els (DIN 1.4914 martensitic steel and a ferritic steel; 26%Cr). These experiments have shown that the corrosion rate of pure chromium is one order of magnitude higher than that of pure iron, while the Fe-Cr ste els exhibit a dissolution rate equal to that of pure iron. A mechanism of corrosion of the martensitic steel has been proposed and discussed below: Dissolution of the metallic elements constituting the steel: F e, Cr, etc. Diffusion of the dissolved species in the boundary layer o f liquid metal, with the rate determining step for the whole corrosion mechanism being the diffusion of iron. Diffusion of Cr element in the matrix to the solid/liquid metal interface. (C) 1998 Elsevier Science B.V.