A SiCnw/PyC -toughened ZrB                         2                         -SiC coating for protecting Si-SiC coated C/C composites against oxidation

Chunyu Cheng; Hejun Li; Qiangang Fu; Liping Guo

doi:10.1016/j.apsusc.2018.06.246

A SiCnw/PyC -toughened ZrB ₂ -SiC coating for protecting Si-SiC coated C/C composites against oxidation

Chunyu Cheng, Hejun Li, Qiangang Fu, Liping Guo

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

45 Scopus citations

Abstract

A novel ZrB ₂ -SiC ceramic coating reinforced with well-dispersed SiC nanowire/pyrolytic carbon (SiCnw/PyC) core-shell structures was prepared on Si-SiC coated carbon/carbon (C/C) composites by heat treatment, chemical vapor deposition (CVD) and pack cementation. Compared to the ZrB ₂ -SiC coating only toughened by SiC nanowires, the ZrB ₂ -SiC coating with SiCnw/PyC structures shows a better oxidation resistance due to Si in raw materials reacting with PyC to generate dense SiC layer, which leads to an efficient load transfer from coating to SiCnw/PyC structure. The results of thermogravimetric analysis shows that the maximal mass loss of the coated C/C specimen with SiCnw/PyC structures is only 2.20% from 323 K to 1673 K, and its mass loss is only 0.30% after thermal shock between room temperature and 1673 K for 40 times.

Original language	English
Pages (from-to)	360-366
Number of pages	7
Journal	Applied Surface Science
Volume	457
DOIs	https://doi.org/10.1016/j.apsusc.2018.06.246
State	Published - 1 Nov 2018

Keywords

Pack cementation
SiCnw/PyC structure
ZrB -SiC coating

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10.1016/j.apsusc.2018.06.246

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@article{5026021bcbb843808a30d6c39d7ac4d1,

title = " A SiCnw/PyC -toughened ZrB 2 -SiC coating for protecting Si-SiC coated C/C composites against oxidation ",

abstract = " A novel ZrB 2 -SiC ceramic coating reinforced with well-dispersed SiC nanowire/pyrolytic carbon (SiCnw/PyC) core-shell structures was prepared on Si-SiC coated carbon/carbon (C/C) composites by heat treatment, chemical vapor deposition (CVD) and pack cementation. Compared to the ZrB 2 -SiC coating only toughened by SiC nanowires, the ZrB 2 -SiC coating with SiCnw/PyC structures shows a better oxidation resistance due to Si in raw materials reacting with PyC to generate dense SiC layer, which leads to an efficient load transfer from coating to SiCnw/PyC structure. The results of thermogravimetric analysis shows that the maximal mass loss of the coated C/C specimen with SiCnw/PyC structures is only 2.20% from 323 K to 1673 K, and its mass loss is only 0.30% after thermal shock between room temperature and 1673 K for 40 times.",

keywords = "Pack cementation, SiCnw/PyC structure, ZrB -SiC coating",

author = "Chunyu Cheng and Hejun Li and Qiangang Fu and Liping Guo",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = nov,

day = "1",

doi = "10.1016/j.apsusc.2018.06.246",

language = "英语",

volume = "457",

pages = "360--366",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

A SiCnw/PyC -toughened ZrB ₂ -SiC coating for protecting Si-SiC coated C/C composites against oxidation . / Cheng, Chunyu; Li, Hejun ; Fu, Qiangang et al.
In: Applied Surface Science, Vol. 457, 01.11.2018, p. 360-366.

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

TY - JOUR

T1 - A SiCnw/PyC -toughened ZrB 2 -SiC coating for protecting Si-SiC coated C/C composites against oxidation

AU - Cheng, Chunyu

AU - Li, Hejun

AU - Fu, Qiangang

AU - Guo, Liping

PY - 2018/11/1

Y1 - 2018/11/1

N2 - A novel ZrB 2 -SiC ceramic coating reinforced with well-dispersed SiC nanowire/pyrolytic carbon (SiCnw/PyC) core-shell structures was prepared on Si-SiC coated carbon/carbon (C/C) composites by heat treatment, chemical vapor deposition (CVD) and pack cementation. Compared to the ZrB 2 -SiC coating only toughened by SiC nanowires, the ZrB 2 -SiC coating with SiCnw/PyC structures shows a better oxidation resistance due to Si in raw materials reacting with PyC to generate dense SiC layer, which leads to an efficient load transfer from coating to SiCnw/PyC structure. The results of thermogravimetric analysis shows that the maximal mass loss of the coated C/C specimen with SiCnw/PyC structures is only 2.20% from 323 K to 1673 K, and its mass loss is only 0.30% after thermal shock between room temperature and 1673 K for 40 times.

AB - A novel ZrB 2 -SiC ceramic coating reinforced with well-dispersed SiC nanowire/pyrolytic carbon (SiCnw/PyC) core-shell structures was prepared on Si-SiC coated carbon/carbon (C/C) composites by heat treatment, chemical vapor deposition (CVD) and pack cementation. Compared to the ZrB 2 -SiC coating only toughened by SiC nanowires, the ZrB 2 -SiC coating with SiCnw/PyC structures shows a better oxidation resistance due to Si in raw materials reacting with PyC to generate dense SiC layer, which leads to an efficient load transfer from coating to SiCnw/PyC structure. The results of thermogravimetric analysis shows that the maximal mass loss of the coated C/C specimen with SiCnw/PyC structures is only 2.20% from 323 K to 1673 K, and its mass loss is only 0.30% after thermal shock between room temperature and 1673 K for 40 times.

KW - Pack cementation

KW - SiCnw/PyC structure

KW - ZrB -SiC coating

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U2 - 10.1016/j.apsusc.2018.06.246

DO - 10.1016/j.apsusc.2018.06.246

M3 - 文章

AN - SCOPUS:85049309169

SN - 0169-4332

VL - 457

SP - 360

EP - 366

JO - Applied Surface Science

JF - Applied Surface Science

ER -

A SiCnw/PyC -toughened ZrB ₂ -SiC coating for protecting Si-SiC coated C/C composites against oxidation

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Keywords

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