Novel suspension route to incorporate graphene nano-platelets in HVAF-sprayed Cr3C2–NiCr coatings for superior wear performance
نویسندگان
چکیده
Graphene nano platelets (GNP) have several attractive properties, including excellent lubricity that can be used to develop wear-resistant coatings. Thermally sprayed chromium carbide–nickel (Cr3C2–NiCr) coatings are widely employed impart wear resistance engineering components. This work attempts improve the of high velocity air fuel (HVAF) Cr3C2–NiCr by incorporating GNP using a hybrid approach in which (powder) and (suspension) co-axially injected. Two different powder-to-suspension delivery ratios were this study utilizes liquid feedstock tandem with HVAF system. Furthermore, for comparison, pure (without graphene) reference coating was deposited process identical spray parameters. The as-sprayed characterized their microstructure phase constitution SEM/EDS X-Ray Diffraction. Mechanical properties such as hardness fracture toughness evaluated micro-indentation technique. subjected dry sliding tests performance compared Cr3C2–NiCr. incorporated exhibited lower CoF rates than coating. Post analysis revealed mechanisms predominant investigated Utilizing above case study, provides key insights into new produce mitigating wear.
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ژورنال
عنوان ژورنال: Journal of materials research and technology
سال: 2021
ISSN: ['2238-7854', '2214-0697']
DOI: https://doi.org/10.1016/j.jmrt.2021.04.096