Ablation behavior of CVD-ZrC coating under oxyacetylene torch environment with different heat fluxes

Shao Long Wang; Ke Zhi Li; He Jun Li; Yu Lei Zhang; Wei Yang Zhang

doi:10.1016/j.ijrmhm.2014.07.042

Ablation behavior of CVD-ZrC coating under oxyacetylene torch environment with different heat fluxes

Shao Long Wang, Ke Zhi Li, He Jun Li, Yu Lei Zhang, Wei Yang Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

37 Scopus citations

Abstract

An ablation resistance ZrC coating composed of micrometer particles was prepared on carbon/carbon composites by chemical vapor deposition. The structure evolution, ablation property and behavior of the coating were investigated under an oxyacetylene torch environment with different heat fluxes. Results show that the ablation performance decreases with the increase of heat fluxes from 2380 to 4180 kW/m². Oxidation erosion is proposed as the major ablation mechanism. The ablated coating consists of three layers (outer ZrO ₂ layer, transitional ZrC_xO_y layer and residual ZrC layer). An oxidation progress that the ZrC is oxidized into ZrC _xO_y firstly and then into ZrO₂ is inferred and accelerated by the continuous diffusion of oxygen resulted from the increase of heat fluxes. During different heat flux environments, the coating exhibits efficacious mechanical denudation resistance and the formed transitional ZrC_xO_y and outer ZrO₂ layers act as a good oxygen diffusion barrier, which could be the reason for its high ablation resistance at the temperature of 2000-3000 °C.

Original language	English
Pages (from-to)	108-114
Number of pages	7
Journal	International Journal of Refractory Metals and Hard Materials
Volume	48
DOIs	https://doi.org/10.1016/j.ijrmhm.2014.07.042
State	Published - Jan 2015

Keywords

Heat flux
High temperature corrosion
Oxidation
Weight loss

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10.1016/j.ijrmhm.2014.07.042

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@article{bc6ab90c31a346ae9c219c38fe1511b1,

title = "Ablation behavior of CVD-ZrC coating under oxyacetylene torch environment with different heat fluxes",

abstract = "An ablation resistance ZrC coating composed of micrometer particles was prepared on carbon/carbon composites by chemical vapor deposition. The structure evolution, ablation property and behavior of the coating were investigated under an oxyacetylene torch environment with different heat fluxes. Results show that the ablation performance decreases with the increase of heat fluxes from 2380 to 4180 kW/m2. Oxidation erosion is proposed as the major ablation mechanism. The ablated coating consists of three layers (outer ZrO 2 layer, transitional ZrCxOy layer and residual ZrC layer). An oxidation progress that the ZrC is oxidized into ZrC xOy firstly and then into ZrO2 is inferred and accelerated by the continuous diffusion of oxygen resulted from the increase of heat fluxes. During different heat flux environments, the coating exhibits efficacious mechanical denudation resistance and the formed transitional ZrCxOy and outer ZrO2 layers act as a good oxygen diffusion barrier, which could be the reason for its high ablation resistance at the temperature of 2000-3000 °C.",

keywords = "Heat flux, High temperature corrosion, Oxidation, Weight loss",

author = "Wang, {Shao Long} and Li, {Ke Zhi} and Li, {He Jun} and Zhang, {Yu Lei} and Zhang, {Wei Yang}",

year = "2015",

month = jan,

doi = "10.1016/j.ijrmhm.2014.07.042",

language = "英语",

volume = "48",

pages = "108--114",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Ablation behavior of CVD-ZrC coating under oxyacetylene torch environment with different heat fluxes

AU - Wang, Shao Long

AU - Li, Ke Zhi

AU - Li, He Jun

AU - Zhang, Yu Lei

AU - Zhang, Wei Yang

PY - 2015/1

Y1 - 2015/1

N2 - An ablation resistance ZrC coating composed of micrometer particles was prepared on carbon/carbon composites by chemical vapor deposition. The structure evolution, ablation property and behavior of the coating were investigated under an oxyacetylene torch environment with different heat fluxes. Results show that the ablation performance decreases with the increase of heat fluxes from 2380 to 4180 kW/m2. Oxidation erosion is proposed as the major ablation mechanism. The ablated coating consists of three layers (outer ZrO 2 layer, transitional ZrCxOy layer and residual ZrC layer). An oxidation progress that the ZrC is oxidized into ZrC xOy firstly and then into ZrO2 is inferred and accelerated by the continuous diffusion of oxygen resulted from the increase of heat fluxes. During different heat flux environments, the coating exhibits efficacious mechanical denudation resistance and the formed transitional ZrCxOy and outer ZrO2 layers act as a good oxygen diffusion barrier, which could be the reason for its high ablation resistance at the temperature of 2000-3000 °C.

AB - An ablation resistance ZrC coating composed of micrometer particles was prepared on carbon/carbon composites by chemical vapor deposition. The structure evolution, ablation property and behavior of the coating were investigated under an oxyacetylene torch environment with different heat fluxes. Results show that the ablation performance decreases with the increase of heat fluxes from 2380 to 4180 kW/m2. Oxidation erosion is proposed as the major ablation mechanism. The ablated coating consists of three layers (outer ZrO 2 layer, transitional ZrCxOy layer and residual ZrC layer). An oxidation progress that the ZrC is oxidized into ZrC xOy firstly and then into ZrO2 is inferred and accelerated by the continuous diffusion of oxygen resulted from the increase of heat fluxes. During different heat flux environments, the coating exhibits efficacious mechanical denudation resistance and the formed transitional ZrCxOy and outer ZrO2 layers act as a good oxygen diffusion barrier, which could be the reason for its high ablation resistance at the temperature of 2000-3000 °C.

KW - Heat flux

KW - High temperature corrosion

KW - Oxidation

KW - Weight loss

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U2 - 10.1016/j.ijrmhm.2014.07.042

DO - 10.1016/j.ijrmhm.2014.07.042

M3 - 文章

AN - SCOPUS:84906691298

SN - 0263-4368

VL - 48

SP - 108

EP - 114

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Ablation behavior of CVD-ZrC coating under oxyacetylene torch environment with different heat fluxes

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Keywords

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