Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
CHARACTERIZATION OF UHTC ZrB2/SiC COMPOSITE MATERIALS EXPOSED TO HYPERSONIC PLASMA TORCH SIMULATING AEROSPACE APPLICATIONS
Submission Author:
Cristian Cley Paterniani Rita , SP
Co-Authors:
Cristian Cley Paterniani Rita, FELIPE MIRANDA, GILBERTO PETRACONI
Presenter: Cristian Cley Paterniani Rita
doi://10.26678/ABCM.COBEM2019.COB2019-1702
Abstract
The successful implementation of hypersonic vehicles and evolution of space capsules used at the atmospheric reentry, relies on the deep understanding of aerothermodynamic load effect on the new class of materials called ultra-high temp ceramic (UHTC). This approach demands experimental data of ablation resistance of UHTC materials under hypersonic regime, which is rarely discussed in the literature. For this reason, the present study aims to investigate the degradation mechanism of ZrB2-SiC based materials, tested in a plasma wind tunnel, capable of generating a hypersonic plasma jet and simulating the reentry atmosphere conditions. The air plasma jet used to promote the ablative environment has thermal flux of 1.7 MW/m2, average enthalpy of 18.5 MJ / kg and Mach number 5. The effect of ablative environment at hypersonic flow on the microstructure of ZrB2-SiC, with different SiC percentage in volume (10, 20 and 30%) were discussed through the results obtained from the XRD, SEM and EDS analysis.
Keywords
Plasma Wind Tunnel, UHTC Materials, Plasma Jet, Hypersonic Flow, Hypersonic Plasma Torch
