Investigation on microstructure and oxidation resistance of Cr-Al-Si coating for carbon/carbon composites by plasma spraying

Min Huang; Kezhi Li; Hejun Li; Qiangang Fu; Guozhong Xu; Guodong Sun

Investigation on microstructure and oxidation resistance of Cr-Al-Si coating for carbon/carbon composites by plasma spraying

Min Huang, Kezhi Li, Hejun Li, Qiangang Fu, Guozhong Xu, Guodong Sun

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

2 Scopus citations

Abstract

Cr-Al-Si coating was prepared on the surface of SiC coated C/C composites by the plasma spraying method. The phase composition and microstructure of Cr-Al-Si coating were studied by XRD and SEM. The isothermal oxidation test at 1500°C was carried out in air. The XRD results show that the outer Cr-Al-Si alloy coating consists of Al_3.21Si_0.47, Cr₃Si and Al₂O₃. The thickness of the coating was about 120μm, and no penetrable crack was observed in the cross-sectional SEM morphologies of the coating. The oxidation resistance of the single porous β-SiC coating is poor, which can only protect C/C composites from oxidation for 10h with a mass loss of 10%. After adding the Cr-Al-Si alloy outer coating, the double-layer Cr-Al-Si and SiC show a better oxidation protective ability and 5.3% mass loss of the coated sample after oxidation for 61h.

Original language	English
Pages (from-to)	109-112
Number of pages	4
Journal	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume	24
Issue number	5
State	Published - Oct 2007

Keywords

Anti-oxidation coating
Carbon/carbon composites
Cr-Al-Si
Plasma spraying

Cite this

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title = "Investigation on microstructure and oxidation resistance of Cr-Al-Si coating for carbon/carbon composites by plasma spraying",

abstract = "Cr-Al-Si coating was prepared on the surface of SiC coated C/C composites by the plasma spraying method. The phase composition and microstructure of Cr-Al-Si coating were studied by XRD and SEM. The isothermal oxidation test at 1500°C was carried out in air. The XRD results show that the outer Cr-Al-Si alloy coating consists of Al3.21Si0.47, Cr3Si and Al2O3. The thickness of the coating was about 120μm, and no penetrable crack was observed in the cross-sectional SEM morphologies of the coating. The oxidation resistance of the single porous β-SiC coating is poor, which can only protect C/C composites from oxidation for 10h with a mass loss of 10%. After adding the Cr-Al-Si alloy outer coating, the double-layer Cr-Al-Si and SiC show a better oxidation protective ability and 5.3% mass loss of the coated sample after oxidation for 61h.",

keywords = "Anti-oxidation coating, Carbon/carbon composites, Cr-Al-Si, Plasma spraying",

author = "Min Huang and Kezhi Li and Hejun Li and Qiangang Fu and Guozhong Xu and Guodong Sun",

year = "2007",

month = oct,

language = "英语",

volume = "24",

pages = "109--112",

journal = "Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica",

issn = "1000-3851",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

number = "5",

}

TY - JOUR

T1 - Investigation on microstructure and oxidation resistance of Cr-Al-Si coating for carbon/carbon composites by plasma spraying

AU - Huang, Min

AU - Li, Kezhi

AU - Li, Hejun

AU - Fu, Qiangang

AU - Xu, Guozhong

AU - Sun, Guodong

PY - 2007/10

Y1 - 2007/10

N2 - Cr-Al-Si coating was prepared on the surface of SiC coated C/C composites by the plasma spraying method. The phase composition and microstructure of Cr-Al-Si coating were studied by XRD and SEM. The isothermal oxidation test at 1500°C was carried out in air. The XRD results show that the outer Cr-Al-Si alloy coating consists of Al3.21Si0.47, Cr3Si and Al2O3. The thickness of the coating was about 120μm, and no penetrable crack was observed in the cross-sectional SEM morphologies of the coating. The oxidation resistance of the single porous β-SiC coating is poor, which can only protect C/C composites from oxidation for 10h with a mass loss of 10%. After adding the Cr-Al-Si alloy outer coating, the double-layer Cr-Al-Si and SiC show a better oxidation protective ability and 5.3% mass loss of the coated sample after oxidation for 61h.

AB - Cr-Al-Si coating was prepared on the surface of SiC coated C/C composites by the plasma spraying method. The phase composition and microstructure of Cr-Al-Si coating were studied by XRD and SEM. The isothermal oxidation test at 1500°C was carried out in air. The XRD results show that the outer Cr-Al-Si alloy coating consists of Al3.21Si0.47, Cr3Si and Al2O3. The thickness of the coating was about 120μm, and no penetrable crack was observed in the cross-sectional SEM morphologies of the coating. The oxidation resistance of the single porous β-SiC coating is poor, which can only protect C/C composites from oxidation for 10h with a mass loss of 10%. After adding the Cr-Al-Si alloy outer coating, the double-layer Cr-Al-Si and SiC show a better oxidation protective ability and 5.3% mass loss of the coated sample after oxidation for 61h.

KW - Anti-oxidation coating

KW - Carbon/carbon composites

KW - Cr-Al-Si

KW - Plasma spraying

UR - http://www.scopus.com/inward/record.url?scp=36349010653&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:36349010653

SN - 1000-3851

VL - 24

SP - 109

EP - 112

JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 5

ER -

Investigation on microstructure and oxidation resistance of Cr-Al-Si coating for carbon/carbon composites by plasma spraying

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