4.7 Article

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

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TRIBOLOGY INTERNATIONAL
卷 188, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2023.108894

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Graphene; SiC nanowires; Lubricating coating; Service life; Anticorrosive property

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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.
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.

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