Wear and Corrosion of UNS S32750 Steel Subjected to Nitriding and Cathodic Cage Deposition

• Published in: Journal of materials engineering and performance 2023-10, Vol.32 (20), p.9011-9018
• Main Authors: Silva, Lauriene G. L., Naeem, M., Costa, Thércio H. C., Libório, Maxwell S., Bandeira, Rafael M., Ferreira, Natália S., Rossino, Luciana S., Júnior, César A. A., Queiroz, José C. A., Neto, João F. M., Sousa, Rômulo R. M.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Materials Science; Quality Control; Reliability; Safety and Risk; Technical Article; Tribology
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-022-07792-3

Super duplex stainless steel (SDSS) has excellent corrosion resistance and good mechanical properties. However, the tribological characteristics of these steels reduce their applicability. Plasma nitriding (PN) and cathodic cage deposition (CCPD) have been used to cause surface changes to improve wear resistance without significant loss of corrosion resistance. In this study, PN and CCPD treatments were performed at 350 and 450 °C to evaluate the influence of temperature on wear and corrosion resistance. Microhardness, XRD, SEM, wear, and corrosion tests were performed to evaluate the results. It was observed that the treatments adopted in the study improved the hardness and wear resistance of all samples. The results showed that nitriding performed well in terms of corrosion resistance at low temperatures (350 °C), while at higher temperatures (450 °C), the duplex treatment proved to be more suitable.