Microstructure,mechanical and high temperature tribological behaviour of graphene nanoplatelets reinforced plasma sprayed titanium nitride coating |
| |
| Affiliation: | 1. Plasma Spray Coating Laboratory, Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Bihta, Bihar 801106, India;2. CSIR-National Metallurgical Laboratory, Jamshedpur 831007, India;3. Hunan University, Yuelushan, Changsha, Hunan 410082, China;1. R&D, Tata Steel, Jamshedpur 831001, Jharkhand, India;2. Plasma Spraying Laboratory, Department of Metallurgical and Materials Engineering, Patna 801103, India |
| |
| Abstract: | In the present study, graphene nanoplatelets (GNPs: 1–2 wt. %) reinforced TiN coating were successfully fabricated over titanium alloy using a reactive shroud plasma spraying technique. All coatings were completely oxide free, while the addition of GNPs suppressed the non-stoichiometric TiN0.3 phase. Improvement of 19%, 18% and 300% in hardness, elastic modulus and fracture toughness was achieved by mere addition of 2 wt. % GNP. The addition of GNP in TiN also reduced the wear volume loss and the wear rate of the coatings for the entire range of temperature (293–873 K). Moreover, GNPs also manifested the coefficient of friction (COF) of the coating. Post wear characterization revealed that the presence of GNP throughout the wear track even at 873 K. The multi-layer structure of GNPs assisted in long term lubricity to the surface and increased the wear resistance of the coating. |
| |
| Keywords: | Titanium nitride Graphene nanoplatelets Shroud plasma spray Mechanical property High temperature tribological behavior |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
