Work

Pb corrosion of ferritic/martensitic steels at 600–700 °C

Year: 2025

Type: article

Abstract: This research investigates the corrosion behavior of three different ferritic/martensitic steels (P91, 1.4748, 1.4136) in liquid lead containing 2 ×10 -7 wt.% dissolved oxygen. Additionally, one of the steels (P91) is surface-aluminized by pack cementation prior to Pb exposure to explore the efficacy of an aluminide coating. The aim of this study is to explore the possibility to extend the use from a corrosion point of view of the selected F/M steels in liquid Pb up to 700 °C. To gain a better understanding of the corrosion behavior over time, exposure tests with three different durations up to 5000 hours are performed. Post-exposure analysis demonstrates oxidation on all materials in the initial stage, followed by various differing scenarios specific for each material and exposure temperature. These range from oxidation with protective properties and selective Cr dissolution with intergranular Pb penetration to total dissolution.

Source: Corrosion Science

DOI: 10.1016/j.corsci.2025.113142

Authors: Anisa Purwitasari, Renate Fetzer, Annette Heinzel, Ceyhun Oskay, Alfons Weisenburger, Georg Müller

Institutions: Karlsruhe Institute of Technology, Society for Chemical Engineering and Biotechnology, DECHEMA-Forschungsinstitut

Language: English

Topic: Nuclear Materials and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,070

Funder: Bundesministerium für Wirtschaft und Klimaschutz