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Synergism in multi-asperity abrasion-corrosion of martensitic and dual phase steels in three aqueous electrolytes
Pondicherry, K.; Fauconnier, D.; De Baets, P. (2020). Synergism in multi-asperity abrasion-corrosion of martensitic and dual phase steels in three aqueous electrolytes. Wear 452-453: 203286. https://hdl.handle.net/10.1016/j.wear.2020.203286
In: Wear: An International Journal on the Science and Technology of Friction, Lubrication and Wear. Elsevier: Amsterdam. ISSN 0043-1648; e-ISSN 0043-1648, more
Peer reviewed article  

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Author keywords
    Two-body abrasion-corrosion; Synergy; Dual phase and martensitic steel; Distilled water; Salt solution and seawater; Anodic and cathodic polarization

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Abstract
    Synergism is noted to expedite the material degradation kinetics in wear-corrosion systems. Over the years, many wear-corrosion contact configurations have been explored to grade materials in application oriented environments. Current investigation focuses on quantifying the synergy of abrasion-corrosion in a two-body abrasive wear configuration where abrasive particles interact with metal counter surface, conforming to ASTM G132. Two abrasion resistant steels, i.e., martensitic and dual phase steels, are exposed to tribo-electrochemical conditions in three different aqueous electrolytes, namely distilled water, aqueous salt solution (3.5 wt% NaCl) and seawater from the North Sea. The submerged metal pins are engaged with 1 N normal load and slid against a P180 SiC abrasive paper. In distilled water, both the materials exhibited slowest corrosion kinetics attributed to the absence of ions thus leading to lowest corrosion currents. Overall, martensitic steel displays a better global wear performance than dual phase steel in all media except seawater. Cathodic protection generates lowest specific wear rates in all the experiments except for martensitic steel in distilled water where the observed higher wear rates are suspected to occur due to hydrogen embrittlement. Generally, the influence of abrasive wear on corrosion was much higher than the effect of corrosion on abrasive wear.

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