Preparation of oxidation protective Hf0.2Ta0.8B2                         -                         x-SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites

Xuanru Ren; Hejun Li; Kezhi Li; Qiangang Fu

doi:10.1016/j.jallcom.2014.08.185

Preparation of oxidation protective Hf_0.2Ta_0.8B₂ _- _x-SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites

Xuanru Ren
, Hejun Li
, Kezhi Li
, Qiangang Fu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

26 Scopus citations

Abstract

To improve the oxidation resistance of TaB₂or HfB₂based coating for C/C composites, an outer Hf_0.2Ta_0.8B₂ _- _x-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. Hf_0.2Ta_0.8B₂ _- _xwas obtained through the in-situ reaction by reducing HfO₂and Ta₂O₅using B₂O₃and graphite. The coating could protect C/C from oxidation at 1773 K for 1220 h. Dual protection of the "inlaid phases" and compound glass layer is responsible for the excellent oxidation resistance of the coating. The double layer coating also presents a stable oxidation resistance at a wide range of temperature from room temperature to 1773 K.

Original language	English
Pages (from-to)	390-395
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	618
DOIs	https://doi.org/10.1016/j.jallcom.2014.08.185
State	Published - 5 Jan 2015

Keywords

Coating materials
Inorganic materials
Oxidation
Scanning electron microscopy, SEM
X-ray diffraction

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10.1016/j.jallcom.2014.08.185

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title = "Preparation of oxidation protective Hf0.2Ta0.8B2 - x-SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites",

abstract = "To improve the oxidation resistance of TaB2or HfB2based coating for C/C composites, an outer Hf0.2Ta0.8B2 - x-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. Hf0.2Ta0.8B2 - xwas obtained through the in-situ reaction by reducing HfO2and Ta2O5using B2O3and graphite. The coating could protect C/C from oxidation at 1773 K for 1220 h. Dual protection of the {"}inlaid phases{"} and compound glass layer is responsible for the excellent oxidation resistance of the coating. The double layer coating also presents a stable oxidation resistance at a wide range of temperature from room temperature to 1773 K.",

keywords = "Coating materials, Inorganic materials, Oxidation, Scanning electron microscopy, SEM, X-ray diffraction",

author = "Xuanru Ren and Hejun Li and Kezhi Li and Qiangang Fu",

year = "2015",

month = jan,

day = "5",

doi = "10.1016/j.jallcom.2014.08.185",

language = "英语",

volume = "618",

pages = "390--395",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Preparation of oxidation protective Hf0.2Ta0.8B2 - x-SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites

AU - Ren, Xuanru

AU - Li, Hejun

AU - Li, Kezhi

AU - Fu, Qiangang

PY - 2015/1/5

Y1 - 2015/1/5

N2 - To improve the oxidation resistance of TaB2or HfB2based coating for C/C composites, an outer Hf0.2Ta0.8B2 - x-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. Hf0.2Ta0.8B2 - xwas obtained through the in-situ reaction by reducing HfO2and Ta2O5using B2O3and graphite. The coating could protect C/C from oxidation at 1773 K for 1220 h. Dual protection of the "inlaid phases" and compound glass layer is responsible for the excellent oxidation resistance of the coating. The double layer coating also presents a stable oxidation resistance at a wide range of temperature from room temperature to 1773 K.

AB - To improve the oxidation resistance of TaB2or HfB2based coating for C/C composites, an outer Hf0.2Ta0.8B2 - x-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. Hf0.2Ta0.8B2 - xwas obtained through the in-situ reaction by reducing HfO2and Ta2O5using B2O3and graphite. The coating could protect C/C from oxidation at 1773 K for 1220 h. Dual protection of the "inlaid phases" and compound glass layer is responsible for the excellent oxidation resistance of the coating. The double layer coating also presents a stable oxidation resistance at a wide range of temperature from room temperature to 1773 K.

KW - Coating materials

KW - Inorganic materials

KW - Oxidation

KW - Scanning electron microscopy, SEM

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/84907168695

U2 - 10.1016/j.jallcom.2014.08.185

DO - 10.1016/j.jallcom.2014.08.185

M3 - 快报

AN - SCOPUS:84907168695

SN - 0925-8388

VL - 618

SP - 390

EP - 395

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Preparation of oxidation protective Hf_0.2Ta_0.8B₂ _- _x-SiC coating by in-situ reaction method on SiC-coated carbon/carbon composites

Abstract

Keywords

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