TaxHf1-xB2-SiC multiphase oxidation protective coating for SiC-coated carbon/carbon composites

Xuanru Ren; Hejun Li; Qiangang Fu; Kezhi Li

doi:10.1016/j.corsci.2014.07.016

Ta_xHf_1-xB₂-SiC multiphase oxidation protective coating for SiC-coated carbon/carbon composites

Xuanru Ren, Hejun Li, Qiangang Fu, Kezhi Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

77 Scopus citations

Abstract

A Ta_xHf_1-xB₂-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. Ta_xHf_1-xB₂ phase is the form of solid solution between TaB₂ and HfB₂. Isothermal oxidation behavior at 1773K and ablation behavior of the coated C/C were tested. Ta_xHf_1-xB₂-SiC/SiC coating could protect the C/C from oxidation at 1773K for 1480h and ablation above 2200K for 40s. During oxidation, oxides of Ta and Hf atoms exist as "pinning phases" in the compound glass layer consisted of outer Ta-Si-O compound silicate layer and inner SiO₂ glass layer, which was responsible for the excellent oxidation resistance.

Original language	English
Pages (from-to)	479-488
Number of pages	10
Journal	Corrosion Science
Volume	87
DOIs	https://doi.org/10.1016/j.corsci.2014.07.016
State	Published - Oct 2014

Keywords

A. Ceramic
A. Tantalum oxide
B. SEM
B. XRD
C. Oxidation

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10.1016/j.corsci.2014.07.016

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title = "TaxHf1-xB2-SiC multiphase oxidation protective coating for SiC-coated carbon/carbon composites",

abstract = "A TaxHf1-xB2-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. TaxHf1-xB2 phase is the form of solid solution between TaB2 and HfB2. Isothermal oxidation behavior at 1773K and ablation behavior of the coated C/C were tested. TaxHf1-xB2-SiC/SiC coating could protect the C/C from oxidation at 1773K for 1480h and ablation above 2200K for 40s. During oxidation, oxides of Ta and Hf atoms exist as {"}pinning phases{"} in the compound glass layer consisted of outer Ta-Si-O compound silicate layer and inner SiO2 glass layer, which was responsible for the excellent oxidation resistance.",

keywords = "A. Ceramic, A. Tantalum oxide, B. SEM, B. XRD, C. Oxidation",

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

year = "2014",

month = oct,

doi = "10.1016/j.corsci.2014.07.016",

language = "英语",

volume = "87",

pages = "479--488",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - TaxHf1-xB2-SiC multiphase oxidation protective coating for SiC-coated carbon/carbon composites

AU - Ren, Xuanru

AU - Li, Hejun

AU - Fu, Qiangang

AU - Li, Kezhi

PY - 2014/10

Y1 - 2014/10

N2 - A TaxHf1-xB2-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. TaxHf1-xB2 phase is the form of solid solution between TaB2 and HfB2. Isothermal oxidation behavior at 1773K and ablation behavior of the coated C/C were tested. TaxHf1-xB2-SiC/SiC coating could protect the C/C from oxidation at 1773K for 1480h and ablation above 2200K for 40s. During oxidation, oxides of Ta and Hf atoms exist as "pinning phases" in the compound glass layer consisted of outer Ta-Si-O compound silicate layer and inner SiO2 glass layer, which was responsible for the excellent oxidation resistance.

AB - A TaxHf1-xB2-SiC coating was prepared by in-situ reaction method on SiC coated C/C composites. TaxHf1-xB2 phase is the form of solid solution between TaB2 and HfB2. Isothermal oxidation behavior at 1773K and ablation behavior of the coated C/C were tested. TaxHf1-xB2-SiC/SiC coating could protect the C/C from oxidation at 1773K for 1480h and ablation above 2200K for 40s. During oxidation, oxides of Ta and Hf atoms exist as "pinning phases" in the compound glass layer consisted of outer Ta-Si-O compound silicate layer and inner SiO2 glass layer, which was responsible for the excellent oxidation resistance.

KW - A. Ceramic

KW - A. Tantalum oxide

KW - B. SEM

KW - B. XRD

KW - C. Oxidation

UR - http://www.scopus.com/inward/record.url?scp=84905400453&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2014.07.016

DO - 10.1016/j.corsci.2014.07.016

M3 - 文章

AN - SCOPUS:84905400453

SN - 0010-938X

VL - 87

SP - 479

EP - 488

JO - Corrosion Science

JF - Corrosion Science

ER -

Ta_xHf_1-xB₂-SiC multiphase oxidation protective coating for SiC-coated carbon/carbon composites

Abstract

Keywords

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