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Ablation Experiments of High-Temperature Materials (Inconel, C–C and SiC) Using a High-Velocity Oxygen-Fuel Torch

Ablation Experiments of High-Temperature Materials (Inconel, C–C and SiC) Using a High-Velocity... Ablation experiments of three different material specimens for high-temperature aerospace applications, namely Inconel, C–C and SiC were carried out using a high-velocity oxygen-fuel system. Originally designed for spray coating, the HVOF can be used as an easy-to-operate and inexpensive alternative to plasma wind tunnels. The HVOF flow characterization was performed intrusively using a water-cooled Gardon gauge for stagnation point heat fluxes and wedge probes for supersonic Mach numbers. The specimen surface temperatures were measured using a two-colour pyrometer and an IR camera. The SiC specimen showed the maximum surface temperature around 2200 K. The stagnation point heat fluxes were measured at 80 mm, 100 mm, 120 mm, 140 mm, 160 mm and 180 mm away from the HVOF torch nozzle exit as 10.935 MW/m2, 8.026 MW/m2, 5.111 MW/m2, 3.263 MW/m2, 1.935 MW/m2, and 1.600 MW/m2, respectively. Using an HVOF system, this is the first study to report heat flux values measured experimentally at specimen test locations. A constant supersonic Mach number of 1.38 was obtained up to 80 mm of the flow. Three-dimensional mappings were performed to study the specimen surface feature changes before and after the tests. SEM and EDS were performed. The SiC specimen showed excellent ablation resistance, even though it was tested at a higher heat flux condition compared to other two material specimens. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Aeronautical and Space Sciences Springer Journals

Ablation Experiments of High-Temperature Materials (Inconel, C–C and SiC) Using a High-Velocity Oxygen-Fuel Torch

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References (22)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to The Korean Society for Aeronautical & Space Sciences 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2093-274X
eISSN
2093-2480
DOI
10.1007/s42405-022-00514-y
Publisher site
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Abstract

Ablation experiments of three different material specimens for high-temperature aerospace applications, namely Inconel, C–C and SiC were carried out using a high-velocity oxygen-fuel system. Originally designed for spray coating, the HVOF can be used as an easy-to-operate and inexpensive alternative to plasma wind tunnels. The HVOF flow characterization was performed intrusively using a water-cooled Gardon gauge for stagnation point heat fluxes and wedge probes for supersonic Mach numbers. The specimen surface temperatures were measured using a two-colour pyrometer and an IR camera. The SiC specimen showed the maximum surface temperature around 2200 K. The stagnation point heat fluxes were measured at 80 mm, 100 mm, 120 mm, 140 mm, 160 mm and 180 mm away from the HVOF torch nozzle exit as 10.935 MW/m2, 8.026 MW/m2, 5.111 MW/m2, 3.263 MW/m2, 1.935 MW/m2, and 1.600 MW/m2, respectively. Using an HVOF system, this is the first study to report heat flux values measured experimentally at specimen test locations. A constant supersonic Mach number of 1.38 was obtained up to 80 mm of the flow. Three-dimensional mappings were performed to study the specimen surface feature changes before and after the tests. SEM and EDS were performed. The SiC specimen showed excellent ablation resistance, even though it was tested at a higher heat flux condition compared to other two material specimens.

Journal

International Journal of Aeronautical and Space Sciences – Springer Journals

Published: Apr 1, 2023

Keywords: HVOF; Gardon gauge; Mach number; Inconel; SiC; Ablation

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