About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
Influence of Graphene Reinforcement on the Mechanical and Tribological Performance of HVOF-Sprayed Cr3C2-NiCr Coatings |
| Author(s) |
SHUBHENDRA SHIVAM MAURYA, G Sivakumar |
| On-Site Speaker (Planned) |
SHUBHENDRA SHIVAM MAURYA |
| Abstract Scope |
Tungsten-based cermet coatings are widely used for wear protection; however, the demand for high-temperature, tungsten-free alternatives has driven the development of advanced Cr3C2-NiCr coatings. In this study, graphene-reinforced Cr3C2-NiCr composite coatings were fabricated using the high-velocity oxy-fuel (HVOF) spray process. The effect of graphene on the microstructure, mechanical properties, and tribological performance of the coatings was systematically investigated. Graphene addition resulted in a dense and homogeneous microstructure with enhanced interlamellar cohesion. Consequently, the composite coating exhibited improved hardness, elastic modulus, and fracture toughness through effective load transfer, crack deflection, crack bridging, and crack arrest mechanisms. The graphene-reinforced coating also demonstrated superior wear resistance and a lower coefficient of friction, attributed to its enhanced mechanical integrity and the solid-lubricating nature of graphene. These findings establish graphene-reinforced HVOF-sprayed Cr3C2-NiCr coatings as promising tungsten-free candidates for demanding wear-resistant engineering applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Mechanical Properties, Composites |