Authors: Vladimir Totolin Hakan Göcerler Manel Rodríguez Ripoll Martin Jech
Publish Date: 2016/12/24
Volume: 65, Issue: 1, Pages: 20-
Abstract
The role of ferric oxide nanoparticles on the lubricating characteristics of passivating films formed on stainless steel SS was discussed in this study The triboelectrochemical behavior of mirrorlike polished AISI 304 SS used as an exemplary material was evaluated in various electrolytes by means of a simulated chemical–mechanical polishing process in laboratory scale It was clearly demonstrated that a suitable combination of abrasives ferric oxide nanoparticles and an oxidizer nitric acid can act as an effective lubricant that lowers the friction and wear of the AISI 304 SS surfaces The excellent lubricating and anticorrosion properties shown by a slurry containing a high content of ferric oxide nanoparticles at high nitric acid concentrations were attributed to the formation of a stable and robust passive film that was composed of chromium oxide and a mixture of iron oxides The lack of ferric oxide nanoparticles in two solutions containing nitric acid of different concentrations led to pitting corrosion and abrasive wear When low concentrations of both ferric oxide nanoparticles and nitric acid were used wearaccelerated corrosion became the dominant mechanism that was caused by the presence of thirdbody wear particles in the contact zoneThis work was funded by the Austrian COMETProgram Project K2 XTribology Grant No 849109 and has been carried out within the Excellence Centre of Tribology The authors would like to thank Christoph Gabler for performing the XPS analyses and Fjorda Xhiku for the topography measurements
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