Journal Published Online: 20 January 2023
Volume 12, Issue 1

Influence of Abrasion on Corrosive Behavior of a Supermartensitic Stainless Steel in Saline Medium

CODEN: MPCACD

Abstract

Supermartensitic stainless steels, with moderate wear and corrosion resistance, are commonly used in the petroleum and gas industry. A setup configured with a potentiostat and a tribometer was developed to study tribocorrosion behavior of a supermartensitic stainless steel. The electrochemical evaluation indicated that under abrasion, the breakdown potential shifted from 73 V toward lower values, reaching −76 mV(Ag/AgCl) by using larger particles. Using the smallest particles, the breakdown potential was the highest. Because of the synergetic effect of wear and corrosion, the concentration of pits was higher with rubbing, but the pit growth was inhibited. The effects of particle size on wear and corrosion were evaluated using diamond particles with a size range of 10–20 μm, 30–40 μm, 40–60 μm, and 140–170 μm. The smallest particles promoted the highest pit growth inhibition and the highest breakdown potential but also the highest passivation current density. The larger abrasive diamond particles decreased the breakdown potential of the supermartensitic stainless steel in a saline solution.

Author Information

Soares, Renata Braga
Federal University of Latin-American Integration, Foz do Iguaçu, PR, Brazil
Ma, Lian
Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA
Liang, Hong
Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA
Lins, Vanessa de Freitas Cunha
Department of Chemical Engineering, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
Pages: 15
Price: $25.00
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Stock #: MPC20220009
ISSN: 2379-1365
DOI: 10.1520/MPC20220009