Sealing role of B 2O 3 in MoSi 2-CrSi 2-Si/B-modified SiC coating for C/C composites

Tao Feng; He Jun Li; Xiao Hong Shi; Xi Yang; Yi Xian Li; Xi Yuan Yao

doi:10.1016/j.corsci.2012.04.018

Sealing role of B ₂O ₃ in MoSi ₂-CrSi ₂-Si/B-modified SiC coating for C/C composites

Tao Feng, He Jun Li, Xiao Hong Shi, Xi Yang, Yi Xian Li, Xi Yuan Yao

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

61 Scopus citations

Abstract

A MoSi ₂-CrSi ₂-Si/B-modified SiC coating was prepared by two-step pack cementation. The coating could protect C/C composites from oxidation at 1173K for 600min and at 1873K for 300h and from erosion at 1873K for 50h, respectively. B ₂O ₃ oxidised from B-modified SiC layer could seal cracks at intermediate temperatures, resulting in improving the oxidation resistance of the coating. Large cracks caused by the bending of the coated specimens and excessive local stress resulted in the fracture of the tested specimens.

Original language	English
Pages (from-to)	4-9
Number of pages	6
Journal	Corrosion Science
Volume	60
DOIs	https://doi.org/10.1016/j.corsci.2012.04.018
State	Published - Jul 2012

Keywords

A. Ceramic matrix composites
A. Intermetallics
C. Oxidation

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10.1016/j.corsci.2012.04.018

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title = "Sealing role of B 2O 3 in MoSi 2-CrSi 2-Si/B-modified SiC coating for C/C composites",

abstract = "A MoSi 2-CrSi 2-Si/B-modified SiC coating was prepared by two-step pack cementation. The coating could protect C/C composites from oxidation at 1173K for 600min and at 1873K for 300h and from erosion at 1873K for 50h, respectively. B 2O 3 oxidised from B-modified SiC layer could seal cracks at intermediate temperatures, resulting in improving the oxidation resistance of the coating. Large cracks caused by the bending of the coated specimens and excessive local stress resulted in the fracture of the tested specimens.",

keywords = "A. Ceramic matrix composites, A. Intermetallics, C. Oxidation",

author = "Tao Feng and Li, {He Jun} and Shi, {Xiao Hong} and Xi Yang and Li, {Yi Xian} and Yao, {Xi Yuan}",

year = "2012",

month = jul,

doi = "10.1016/j.corsci.2012.04.018",

language = "英语",

volume = "60",

pages = "4--9",

journal = "Corrosion Science",

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TY - JOUR

T1 - Sealing role of B 2O 3 in MoSi 2-CrSi 2-Si/B-modified SiC coating for C/C composites

AU - Feng, Tao

AU - Li, He Jun

AU - Shi, Xiao Hong

AU - Yang, Xi

AU - Li, Yi Xian

AU - Yao, Xi Yuan

PY - 2012/7

Y1 - 2012/7

N2 - A MoSi 2-CrSi 2-Si/B-modified SiC coating was prepared by two-step pack cementation. The coating could protect C/C composites from oxidation at 1173K for 600min and at 1873K for 300h and from erosion at 1873K for 50h, respectively. B 2O 3 oxidised from B-modified SiC layer could seal cracks at intermediate temperatures, resulting in improving the oxidation resistance of the coating. Large cracks caused by the bending of the coated specimens and excessive local stress resulted in the fracture of the tested specimens.

AB - A MoSi 2-CrSi 2-Si/B-modified SiC coating was prepared by two-step pack cementation. The coating could protect C/C composites from oxidation at 1173K for 600min and at 1873K for 300h and from erosion at 1873K for 50h, respectively. B 2O 3 oxidised from B-modified SiC layer could seal cracks at intermediate temperatures, resulting in improving the oxidation resistance of the coating. Large cracks caused by the bending of the coated specimens and excessive local stress resulted in the fracture of the tested specimens.

KW - A. Ceramic matrix composites

KW - A. Intermetallics

KW - C. Oxidation

UR - http://www.scopus.com/inward/record.url?scp=84861201771&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2012.04.018

DO - 10.1016/j.corsci.2012.04.018

M3 - 文章

AN - SCOPUS:84861201771

SN - 0010-938X

VL - 60

SP - 4

EP - 9

JO - Corrosion Science

JF - Corrosion Science

ER -

Sealing role of B ₂O ₃ in MoSi ₂-CrSi ₂-Si/B-modified SiC coating for C/C composites

Abstract

Keywords

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