Effect of Monolithic LaB6 on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites

Yujun Jia; Hejun Li; Lu Li; Qiangang Fu; Kezhi Li

doi:10.1016/j.jmst.2016.06.019

Effect of Monolithic LaB₆ on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites

Yujun Jia, Hejun Li, Lu Li, Qiangang Fu, Kezhi Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

33 Scopus citations

Abstract

Ablation resistance of monolithic LaB₆-doped ZrC coating for SiC-coated carbon/carbon composites by supersonic atmospheric plasma spray was investigated under an oxyacetylene torch with a heat flux of 4.18 MW/m². Result shows that ZrC coating with 10 vol.% LaB₆ has a good ablation resistance compared with pure ZrC, ZrC with 20 vol.% LaB₆ and SiC-doped ZrC coating. After ablation for 15 s, the weight is increased by 1.12 mg/s. The good ablation resistance is ascribed to the formation of a stabilized scale which consists of protective La₂Zr₂O₇-containing molten phase and ZrO₂ particles keeping the integrity of the coating.

Original language	English
Pages (from-to)	996-1002
Number of pages	7
Journal	Journal of Materials Science and Technology
Volume	32
Issue number	10
DOIs	https://doi.org/10.1016/j.jmst.2016.06.019
State	Published - 1 Oct 2016

Keywords

Ablation performance
C/C composites
Ceramic coating

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10.1016/j.jmst.2016.06.019

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title = "Effect of Monolithic LaB6 on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites",

abstract = "Ablation resistance of monolithic LaB6-doped ZrC coating for SiC-coated carbon/carbon composites by supersonic atmospheric plasma spray was investigated under an oxyacetylene torch with a heat flux of 4.18 MW/m2. Result shows that ZrC coating with 10 vol.% LaB6 has a good ablation resistance compared with pure ZrC, ZrC with 20 vol.% LaB6 and SiC-doped ZrC coating. After ablation for 15 s, the weight is increased by 1.12 mg/s. The good ablation resistance is ascribed to the formation of a stabilized scale which consists of protective La2Zr2O7-containing molten phase and ZrO2 particles keeping the integrity of the coating.",

keywords = "Ablation performance, C/C composites, Ceramic coating",

author = "Yujun Jia and Hejun Li and Lu Li and Qiangang Fu and Kezhi Li",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = oct,

day = "1",

doi = "10.1016/j.jmst.2016.06.019",

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T1 - Effect of Monolithic LaB6 on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites

AU - Jia, Yujun

AU - Li, Hejun

AU - Li, Lu

AU - Fu, Qiangang

AU - Li, Kezhi

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Ablation resistance of monolithic LaB6-doped ZrC coating for SiC-coated carbon/carbon composites by supersonic atmospheric plasma spray was investigated under an oxyacetylene torch with a heat flux of 4.18 MW/m2. Result shows that ZrC coating with 10 vol.% LaB6 has a good ablation resistance compared with pure ZrC, ZrC with 20 vol.% LaB6 and SiC-doped ZrC coating. After ablation for 15 s, the weight is increased by 1.12 mg/s. The good ablation resistance is ascribed to the formation of a stabilized scale which consists of protective La2Zr2O7-containing molten phase and ZrO2 particles keeping the integrity of the coating.

AB - Ablation resistance of monolithic LaB6-doped ZrC coating for SiC-coated carbon/carbon composites by supersonic atmospheric plasma spray was investigated under an oxyacetylene torch with a heat flux of 4.18 MW/m2. Result shows that ZrC coating with 10 vol.% LaB6 has a good ablation resistance compared with pure ZrC, ZrC with 20 vol.% LaB6 and SiC-doped ZrC coating. After ablation for 15 s, the weight is increased by 1.12 mg/s. The good ablation resistance is ascribed to the formation of a stabilized scale which consists of protective La2Zr2O7-containing molten phase and ZrO2 particles keeping the integrity of the coating.

KW - Ablation performance

KW - C/C composites

KW - Ceramic coating

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DO - 10.1016/j.jmst.2016.06.019

M3 - 文章

AN - SCOPUS:84978800266

SN - 1005-0302

VL - 32

SP - 996

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JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

IS - 10

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Effect of Monolithic LaB₆ on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites

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