Cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites under oxyacetylene torch with two heat fluxes at the temperatures above 2000 ºC

Zhigang Zhao; Kezhi Li; Wei Li; Leilei Zhang

doi:10.1016/j.corsci.2020.109202

Cyclic ablation behavior of C/C-ZrC-SiC-ZrB₂ composites under oxyacetylene torch with two heat fluxes at the temperatures above 2000 ºC

Zhigang Zhao, Kezhi Li, Wei Li, Leilei Zhang

School of Materials Sience and Engineering

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

50 Scopus citations

Abstract

The cyclic ablation behavior of C/C-ZrC-SiC-ZrB₂ composites was investigated following 30s×4 and 60s×2 cycles at the heat fluxes of 2.38 and 4.18 MW/m², respectively. At the two heat fluxes, the surface temperature of cyclic ablation of 30s×4 was lower than that of 60s×2. Microstructure characterization indicated that the center and transition region consisted of a layered structure of the outer ZrO₂ layer with the subsurface ZrO₂-SiO₂ layer. The depletion of SiO₂ was decreased in the sub layer and the grain size of ZrO₂ in the sub layer was smaller than that of ZrO₂ in the outer layer.

Original language	English
Article number	109202
Journal	Corrosion Science
Volume	181
DOIs	https://doi.org/10.1016/j.corsci.2020.109202
State	Published - 1 Apr 2021

Keywords

C/C-ZrC-SiC-ZrB composites
Carbon/carbon composites
Cyclic ablation
Reactive melt infiltration

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10.1016/j.corsci.2020.109202

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title = "Cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites under oxyacetylene torch with two heat fluxes at the temperatures above 2000 ºC",

abstract = "The cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites was investigated following 30s×4 and 60s×2 cycles at the heat fluxes of 2.38 and 4.18 MW/m2, respectively. At the two heat fluxes, the surface temperature of cyclic ablation of 30s×4 was lower than that of 60s×2. Microstructure characterization indicated that the center and transition region consisted of a layered structure of the outer ZrO2 layer with the subsurface ZrO2-SiO2 layer. The depletion of SiO2 was decreased in the sub layer and the grain size of ZrO2 in the sub layer was smaller than that of ZrO2 in the outer layer.",

keywords = "C/C-ZrC-SiC-ZrB composites, Carbon/carbon composites, Cyclic ablation, Reactive melt infiltration",

author = "Zhigang Zhao and Kezhi Li and Wei Li and Leilei Zhang",

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year = "2021",

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doi = "10.1016/j.corsci.2020.109202",

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TY - JOUR

T1 - Cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites under oxyacetylene torch with two heat fluxes at the temperatures above 2000 ºC

AU - Zhao, Zhigang

AU - Li, Kezhi

AU - Li, Wei

AU - Zhang, Leilei

PY - 2021/4/1

Y1 - 2021/4/1

N2 - The cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites was investigated following 30s×4 and 60s×2 cycles at the heat fluxes of 2.38 and 4.18 MW/m2, respectively. At the two heat fluxes, the surface temperature of cyclic ablation of 30s×4 was lower than that of 60s×2. Microstructure characterization indicated that the center and transition region consisted of a layered structure of the outer ZrO2 layer with the subsurface ZrO2-SiO2 layer. The depletion of SiO2 was decreased in the sub layer and the grain size of ZrO2 in the sub layer was smaller than that of ZrO2 in the outer layer.

AB - The cyclic ablation behavior of C/C-ZrC-SiC-ZrB2 composites was investigated following 30s×4 and 60s×2 cycles at the heat fluxes of 2.38 and 4.18 MW/m2, respectively. At the two heat fluxes, the surface temperature of cyclic ablation of 30s×4 was lower than that of 60s×2. Microstructure characterization indicated that the center and transition region consisted of a layered structure of the outer ZrO2 layer with the subsurface ZrO2-SiO2 layer. The depletion of SiO2 was decreased in the sub layer and the grain size of ZrO2 in the sub layer was smaller than that of ZrO2 in the outer layer.

KW - C/C-ZrC-SiC-ZrB composites

KW - Carbon/carbon composites

KW - Cyclic ablation

KW - Reactive melt infiltration

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U2 - 10.1016/j.corsci.2020.109202

DO - 10.1016/j.corsci.2020.109202

M3 - 文章

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SN - 0010-938X

VL - 181

JO - Corrosion Science

JF - Corrosion Science

M1 - 109202

ER -

Cyclic ablation behavior of C/C-ZrC-SiC-ZrB₂ composites under oxyacetylene torch with two heat fluxes at the temperatures above 2000 ºC

Abstract

Keywords

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