About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Powder and Ceramic Materials Science
|
Presentation Title |
Plasma Sprayed Carbon Nano Fillers Reinforced Lanthanum-cerate Hybrid Composite Coating with Outstanding Toughness |
Author(s) |
Pushpender Singh, Niranjan Pandit, Anup Kumar Keshri |
On-Site Speaker (Planned) |
Pushpender Singh |
Abstract Scope |
Graphene nanoplatelets (1 wt. %) and carbon nanotube (0.5 wt. %), and reinforced lanthanum cerate (La2Ce2O7) matrix, as well as their involvement in overcoming the primary constraints of the La2Ce2O7 (LC) coating. LC coatings have been deposited on the Inconel-718 substrate using the atmospheric plasma spray technique (APS). We report an exceptionally high fracture toughness (8.04 ± 0.2 MPa m0.5) value for an LC coating prepared reinforced by GNPs (1 wt. %) and CNTs (0.5 wt. %); the enhancement in fracture toughness was noted to be ~500% compared to all previous works. Several factors, viz. uniform distribution of GNPs and CNTs in La2Ce2O7 matrix, stabilization of cubic fluorite La2Ce2O7 phase, and various associated toughening mechanisms offered by GNPs and CNTs were attributed to this enhancement. Apart from it, the thermal shock resistance of LCGC coating performed at 1800 °C showed 1721 numbers of cycles before the partial delamination of the coating. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other |