| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering III
|
| Presentation Title |
Damage Tolerance of TiC-laden Tribaloy T400 Suspension-powder Plasma-sprayed Composite Biocompatible Coating |
| Author(s) |
Moumita Mistri, Shrikant Joshi, Kantesh Balani, Kamal Kar |
| On-Site Speaker (Planned) |
Moumita Mistri |
| Abstract Scope |
TiC-reinforced Tribaloy T400 suspension-powder plasma-sprayed coating is deposited. A uniform and adherent T400-TiC coating of thickness ~100 µm revealed in microstructural analysis further confirms dendritic Laves CoMoSi/Co3Mo2Si and hard intermetallic Co7Mo6/Co2Mo7 phases of T400, along with the corresponding TiC phases, in phase study. Synergistic reinforcement of TiC has elicited an enhancement in elastic modulus (of ~184.5 GPa) by ~36%, and Vickers hardness (of ~11.5 GPa) by ~82% in comparison to that of T400 (~135.2 GPa, and ~6.3 GPa respectively. A subsequent deceased fretting wear contact diameter, hence an improved damage tolerance, in T400-TiC compared to T400 alone is noted from a contact area-based wear model postulated herein. Further, with synergistic cell viability in L929 fibroblast, TiC reinforcement in T400 is ascertained to accommodate heavy-duty in-situ load-bearing application with substantially improved micro-hardness via retaining the smaller grain size, and a subsequent fretting wear augmentation through carbide phase strengthening. |
| Proceedings Inclusion? |
Planned: |