SiC nanowires enhanced graphene composite coatings with excellent tribological and anticorrosive properties

The synergistic effect between nanomaterials with different dimensions can enhance wear and corrosion resistance of surface protective coatings. In this work, GO-pva-SiC and RGO-pva-SiC coatings were constructed on stainless steel substrate by combining spraying process and subsequent chemical reduction of hydrazine hydrate. Tribological tests have shown that GO-pva-SiC coating exhibits good lubricating performance under low load and long wear life under high load. After reduction, RGO-pva-SiC coating presents a longer wear resistance life (25,000 cycles) at a lower friction coefficient of 0.11 under 20.0 N. Furthermore, the electrochemical corrosion behavior indicates that the addition of SiC NWs can enhance corrosion resistance of graphene-based coatings. This work provides an efficient way to develop graphene-based composite coatings for practical engineering applications.

Automated summary

The synergistic effect between nanomaterials with different dimensions can enhance wear and corrosion resistance of surface protective coatings. This study found that the GO-pva-SiC coating exhibits good lubricating performance under low load, while the RGO-pva-SiC coating has a longer wear life under high load. Furthermore, the addition of SiC nanowires can enhance the corrosion resistance of graphene-based coatings.