Development of TiC and HfC UHTC Coatings on S45C Steel via HVOF for Rocket Nozzle Applications Kurotun Aini1,2, Djoko Triyono1, Eni Sugiarti2, Bagus Wicaksono3, Lilis Mariani3, Mujtahid3, Safitry Ramandhany2, Nurul Latifah2
1 Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Indonesia
2 Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), Serpong, Indonesia
3 Research Organization for Aeronautics and Space, Rumpin, Bogor, Indonesia, 10340
Abstract
This study aims to develop ultra high temperature ceramic UHTC based coatings of titanium carbide TiC and hafnium carbide HfC on S45C steel substrates using the High Velocity Oxygen Fuel HVOF method for rocket nozzle applications The coatings were designed to enhance high temperature oxidation resistance erosion resistance and surface hardness while maintaining the relatively lightweight characteristics of the material Oxidation testing was conducted at 800C for 100 hours while erosion testing was performed in accordance with ASTM G211 14 standards Coating characterization was carried out using Scanning Electron Microscopy Energy Dispersive Spectroscopy SEM EDS X Ray Diffraction XRD and Vickers hardness testing to evaluate surface morphology phase formation and mechanical properties of the coatings The results are expected to demonstrate that TiC and HfC coatings can improve the performance of S45C steel under extreme environments making them potential protective materials for rocket nozzle applications The novelty of this research lies in the development of TiC and HfC coatings on S45C substrates using HVOF technology for thermal and erosive protection in rocket propulsion systems
