Effects of TaC addition on the ablation resistance of C/SiC

Wang Yi; Xu Yongdong; Wang Yiguang; Cheng Laifei; Zhang Litong

doi:10.1016/j.matlet.2010.04.051

Effects of TaC addition on the ablation resistance of C/SiC

Wang Yi, Xu Yongdong, Wang Yiguang^*, Cheng Laifei, Zhang Litong

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

63 Citations (Scopus)

Abstract

C/SiC-TaC composites were fabricated by powder infiltration (PI) combined with chemical vapor infiltration (CVI) processing. Their ablation resistance performance was evaluated with oxyacetylene torch flame. The ablation morphology and microstructure of the tested samples were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Energy dispersive X-ray spectrum (EDS), respectively. The results indicated that TaC could improve the ablative resistance of C/SiC composites at ultra high temperatures. Liquid Ta ₂O₅ formed due to TaC oxidation could fill the interspaces, cracks, and pores in matrix and to obstruct the diffusing channels of the ablative flames. Presence of TaC and Ta₂O₅ could limit the heat transfer and thus reduce the ablation. The steady SiC-TaC matrix improves the stability of composite.

Original language	English
Pages (from-to)	2068-2071
Number of pages	4
Journal	Materials Letters
Volume	64
Issue number	19
DOIs	https://doi.org/10.1016/j.matlet.2010.04.051
Publication status	Published - 15 Oct 2010
Externally published	Yes

Keywords

Ablation resistance
C/SiC
Composite materials
Microstructure
TaC

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10.1016/j.matlet.2010.04.051

Cite this

@article{f6154af6139e432aad0fd876c791721f,

title = "Effects of TaC addition on the ablation resistance of C/SiC",

abstract = "C/SiC-TaC composites were fabricated by powder infiltration (PI) combined with chemical vapor infiltration (CVI) processing. Their ablation resistance performance was evaluated with oxyacetylene torch flame. The ablation morphology and microstructure of the tested samples were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Energy dispersive X-ray spectrum (EDS), respectively. The results indicated that TaC could improve the ablative resistance of C/SiC composites at ultra high temperatures. Liquid Ta 2O5 formed due to TaC oxidation could fill the interspaces, cracks, and pores in matrix and to obstruct the diffusing channels of the ablative flames. Presence of TaC and Ta2O5 could limit the heat transfer and thus reduce the ablation. The steady SiC-TaC matrix improves the stability of composite.",

keywords = "Ablation resistance, C/SiC, Composite materials, Microstructure, TaC",

author = "Wang Yi and Xu Yongdong and Wang Yiguang and Cheng Laifei and Zhang Litong",

year = "2010",

month = oct,

day = "15",

doi = "10.1016/j.matlet.2010.04.051",

language = "English",

volume = "64",

pages = "2068--2071",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "19",

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TY - JOUR

T1 - Effects of TaC addition on the ablation resistance of C/SiC

AU - Yi, Wang

AU - Yongdong, Xu

AU - Yiguang, Wang

AU - Laifei, Cheng

AU - Litong, Zhang

PY - 2010/10/15

Y1 - 2010/10/15

N2 - C/SiC-TaC composites were fabricated by powder infiltration (PI) combined with chemical vapor infiltration (CVI) processing. Their ablation resistance performance was evaluated with oxyacetylene torch flame. The ablation morphology and microstructure of the tested samples were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Energy dispersive X-ray spectrum (EDS), respectively. The results indicated that TaC could improve the ablative resistance of C/SiC composites at ultra high temperatures. Liquid Ta 2O5 formed due to TaC oxidation could fill the interspaces, cracks, and pores in matrix and to obstruct the diffusing channels of the ablative flames. Presence of TaC and Ta2O5 could limit the heat transfer and thus reduce the ablation. The steady SiC-TaC matrix improves the stability of composite.

AB - C/SiC-TaC composites were fabricated by powder infiltration (PI) combined with chemical vapor infiltration (CVI) processing. Their ablation resistance performance was evaluated with oxyacetylene torch flame. The ablation morphology and microstructure of the tested samples were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Energy dispersive X-ray spectrum (EDS), respectively. The results indicated that TaC could improve the ablative resistance of C/SiC composites at ultra high temperatures. Liquid Ta 2O5 formed due to TaC oxidation could fill the interspaces, cracks, and pores in matrix and to obstruct the diffusing channels of the ablative flames. Presence of TaC and Ta2O5 could limit the heat transfer and thus reduce the ablation. The steady SiC-TaC matrix improves the stability of composite.

KW - Ablation resistance

KW - C/SiC

KW - Composite materials

KW - Microstructure

KW - TaC

UR - http://www.scopus.com/inward/record.url?scp=77954798073&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2010.04.051

DO - 10.1016/j.matlet.2010.04.051

M3 - Article

AN - SCOPUS:77954798073

SN - 0167-577X

VL - 64

SP - 2068

EP - 2071

JO - Materials Letters

JF - Materials Letters

IS - 19

ER -

Effects of TaC addition on the ablation resistance of C/SiC

Abstract

Keywords

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