Influence of the surface finishing on the corrosion behaviour of AISI 316L stainless steel

• Main Authors: Sylvia Dundeková, Viera Zatkalíková, Stanislava Fintová, Branislav Hadzima, Viktor Škorík
• Format: Article
• Language: English
• Published: Univerzity of Zilina. Faculty of Mechanical Engineering 2015-02-01
• Series: Materiálové Inžinierstvo
• Subjects: AISI 316L stainless steel; corrosion; immersion test; corrosion rate
• Online Access: http://ojs.mateng.sk/index.php/Mateng/article/view/166

The influence of the surface preparation of AISI 316L stainless steel by mechanical grinding, polishing and following passivation was examined by immersion corrosion tests in solution simulating body fluids. Decreasing of the surface roughness by finer preparation resulted in decrease of corrosion rates of AISI 316L stainless steel. Passivation of specimens resulted in decreasing of the corrosion rates and in decreasing of the corrosion process speed independently on the roughness of specimens before passivations. Lowest corrosion rates were observed in the case of polished and passivated specimens. However no significant difference in corrosion rates between polished and ground specimens with following passivation was observed.