Work

Development of Thin Carbon-Ceramic Based Coatings in Roll-to-Roll Mode: Tribological and Corrosion Results on Stainless Steel

Year: 2025

Type: article

Abstract: In this work, silicon oxide based coatings with embedded graphene nanoplatelets (content ranging from 1.8 wt.% to 7.2 wt.%) have been developed following the sol-gel route, using AISI430 stainless steel as substrate and dip and roll-to-roll as coating techniques. The tribological and corrosion behaviour of these coatings have been evaluated and compared to bare steel. Concerning tribological behaviour, the coefficient of friction and wear print were significantly reduced with increasing the graphene nanoplatelets content. Regarding corrosion, all coatings showed improved corrosion behaviour compared to bare steel. However, higher concentration of nanoplatelets revealed a negative effect on the corrosion resistance, probably due to aggregation. Taking into account these two counteracting effects, as final part of this work, a bilayer coating with different graphene content has been proposed and fabricated. A top layer, with high graphene nanoplatelets concentration has allowed enhanced tribological properties whereas bottom layer, with no graphene nanoplatelets assures corrosion inhibition under harsh environments.

Source: Materials

DOI: 10.3390/ma18092159

Authors: Mª Fe Menéndez Suárez, Pascal Sanchez, Ana L. Martínez Díez, Beatriz Mingo Roman, Marta Mohedano Sánchez

Institutions: Fundación IDONIAL, Universidad Complutense de Madrid

Language: English

Topic: Lubricants and Their Additives

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: Centro para el Desarrollo Tecnológico Industrial, H2020 European Research Council