Brine-Induced Tribocorrosion Accelerates Wear on Stainless Steel: Implications for Mars Exploration

Javier Martín‐Torres* (Corresponding Author), María‐Paz Zorzano‐Mier, Erik Nyberg, Abhilash Vakkada-Ramachandran, Anshuman Bhardwaj

*Corresponding author for this work

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Tribocorrosion is a degradation phenomenon of material surfaces subjected to the combined action of mechanical loading and corrosion attack caused by the environment. Although corrosive chemical species such as materials like chloride atoms, chlorides, and perchlorates have been detected on the Martian surface, there is a lack of studies of its impact on materials for landed spacecraft and structures that will support surface operations on Mars. Here, we present a series of experiments on the stainless-steel material of the ExoMars 2020 Rosalind Franklin rover wheels. We show how tribocorrosion induced by brines accelerates wear on the materials of the wheels. Our results do not compromise the nominal ExoMars mission but have implications for future long-term surface operations in support of future human exploration or extended robotic missions on Mars.
Original languageEnglish
Article number6441233
Number of pages11
JournalAdvances in Astronomy
Early online date28 Dec 2021
Publication statusPublished - 28 Dec 2021

Bibliographical note

The authors thank the ExoMars Project Team, European Space Agency (ESA), for reviewing the manuscript. The SpaceQ chamber has been developed in collaboration with Kurt J. Lesker Company and was funded by the Kempe Foundation. MPZ’s contribution has been partially supported by the Spanish State Research Agency (AEI), Project No. MDM-2017-0737, Unidad de Excelencia “Maria de Maeztu”–Centro de Astrobiologia (CSIC-INTA).


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