Oxidation response of a SiCf/SiC CMC with a HfB2-based coating in an arc jet test

C. Carney; D. King; M. De Stefano Fumo; C. Purpura; E. Trifoni; A. Martucci; B. Larson; T. Parthasarathy; M. Cinibulk; G. Marino

doi:10.1080/17436753.2018.1509174

Oxidation response of a SiCf/SiC CMC with a HfB₂-based coating in an arc jet test

C. Carney^*, D. King, M. De Stefano Fumo, C. Purpura, E. Trifoni, A. Martucci, B. Larson, T. Parthasarathy, M. Cinibulk, G. Marino

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The behaviour of a SiC-fibre-reinforced composite with a graded matrix was investigated in an arc jet facility. The graded matrix was comprised of several layers of silicon carbide that transition to a mixed SiC-HfB₂ top layer and was sealed with an HfB₂-SiC coating. Samples were exposed to maximum specific total enthalpy hypersonic flow between 14 and 17 MJ kg⁻¹ under stagnation pressures between 2700 and 3050 Pa for hold times of between 137 and 395 s. The resulting sample surface temperatures ranged between 1600 and 1950°C. Spectral emissivity at about 1 μm was calculated using a pyrometer capable of switching between one and two color modes and was shown to decrease with oxidation and removal of SiO₂ from the surface. The impacts of the surface chemistry changes during oxidation and of active oxidation were investigated.

Original language	English
Pages (from-to)	s19-s25
Journal	Advances in Applied Ceramics
Volume	117
Issue number	sup1
DOIs	https://doi.org/10.1080/17436753.2018.1509174
Publication status	Published - 17 Oct 2018
Externally published	Yes

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10.1080/17436753.2018.1509174

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title = "Oxidation response of a SiCf/SiC CMC with a HfB2-based coating in an arc jet test",

abstract = "The behaviour of a SiC-fibre-reinforced composite with a graded matrix was investigated in an arc jet facility. The graded matrix was comprised of several layers of silicon carbide that transition to a mixed SiC-HfB2 top layer and was sealed with an HfB2-SiC coating. Samples were exposed to maximum specific total enthalpy hypersonic flow between 14 and 17 MJ kg−1 under stagnation pressures between 2700 and 3050 Pa for hold times of between 137 and 395 s. The resulting sample surface temperatures ranged between 1600 and 1950°C. Spectral emissivity at about 1 μm was calculated using a pyrometer capable of switching between one and two color modes and was shown to decrease with oxidation and removal of SiO2 from the surface. The impacts of the surface chemistry changes during oxidation and of active oxidation were investigated.",

keywords = "Arc jet, Hfb, SiC: oxidation, UHTC, catalytic recombination, coating, composite",

author = "C. Carney and D. King and {De Stefano Fumo}, M. and C. Purpura and E. Trifoni and A. Martucci and B. Larson and T. Parthasarathy and M. Cinibulk and G. Marino",

note = "Publisher Copyright: {\textcopyright} 2018, {\textcopyright} 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.",

year = "2018",

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doi = "10.1080/17436753.2018.1509174",

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AU - Carney, C.

AU - King, D.

AU - De Stefano Fumo, M.

AU - Purpura, C.

AU - Trifoni, E.

AU - Martucci, A.

AU - Larson, B.

AU - Parthasarathy, T.

AU - Cinibulk, M.

AU - Marino, G.

PY - 2018/10/17

Y1 - 2018/10/17

N2 - The behaviour of a SiC-fibre-reinforced composite with a graded matrix was investigated in an arc jet facility. The graded matrix was comprised of several layers of silicon carbide that transition to a mixed SiC-HfB2 top layer and was sealed with an HfB2-SiC coating. Samples were exposed to maximum specific total enthalpy hypersonic flow between 14 and 17 MJ kg−1 under stagnation pressures between 2700 and 3050 Pa for hold times of between 137 and 395 s. The resulting sample surface temperatures ranged between 1600 and 1950°C. Spectral emissivity at about 1 μm was calculated using a pyrometer capable of switching between one and two color modes and was shown to decrease with oxidation and removal of SiO2 from the surface. The impacts of the surface chemistry changes during oxidation and of active oxidation were investigated.

AB - The behaviour of a SiC-fibre-reinforced composite with a graded matrix was investigated in an arc jet facility. The graded matrix was comprised of several layers of silicon carbide that transition to a mixed SiC-HfB2 top layer and was sealed with an HfB2-SiC coating. Samples were exposed to maximum specific total enthalpy hypersonic flow between 14 and 17 MJ kg−1 under stagnation pressures between 2700 and 3050 Pa for hold times of between 137 and 395 s. The resulting sample surface temperatures ranged between 1600 and 1950°C. Spectral emissivity at about 1 μm was calculated using a pyrometer capable of switching between one and two color modes and was shown to decrease with oxidation and removal of SiO2 from the surface. The impacts of the surface chemistry changes during oxidation and of active oxidation were investigated.

KW - Arc jet

KW - Hfb

KW - SiC: oxidation

KW - UHTC

KW - catalytic recombination

KW - coating

KW - composite

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DO - 10.1080/17436753.2018.1509174

M3 - Article

SN - 1743-6753

VL - 117

SP - s19-s25

JO - Advances in Applied Ceramics

JF - Advances in Applied Ceramics

IS - sup1

ER -

Oxidation response of a SiCf/SiC CMC with a HfB₂-based coating in an arc jet test

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