Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying

Min Huang; Ke Zhi Li; He Jun Li; Jian Feng Huang; Qian Gang Fu

Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying

Min Huang, Ke Zhi Li, He Jun Li, Jian Feng Huang, Qian Gang Fu

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

Different yttrium silicate coatings for SiC-coated C/C composites were designed and prepared by an atmospheric plasma spray method to prevent the C/C composites from oxidation. XRD profiles showed that the coating was composed of Y₂SiO₅, Y₂Si₂O₇, and Y₄Si₃O₁₂. SEM showed that the gradient SiC/Y₄Si₃O₁₂/ Y₂Si₂O₇/Y₂SiO₅ coating had a more compact surface than the other coatings did. Isothermal oxidation tests at 1500°C in air showed that the weight loss curves of the as-prepared C/C composites showed a linear tendency with time and the weight loss rate of all coated samples increased significantly after 73 h. The coating could protect the C/C composites from oxidation at 1500°C for 73 h in air with a weight loss rate of 1.01 × 10^-4 g · cm^-2 · h^-1. The SiC/Y₄Si₃O₁₂/ Y₂Si₂O₇/Y₂SiO₅ was the better coating at high temperature than other coatings.

Original language	English
Pages (from-to)	187-191
Number of pages	5
Journal	Xinxing Tan Cailiao/New Carbon Materials
Volume	25
Issue number	3
State	Published - Jun 2010

Keywords

Carbon/carbon composites
Coating
Plasma spraying
Yttrium Silicate

Cite this

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title = "Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying",

abstract = "Different yttrium silicate coatings for SiC-coated C/C composites were designed and prepared by an atmospheric plasma spray method to prevent the C/C composites from oxidation. XRD profiles showed that the coating was composed of Y2SiO5, Y2Si2O7, and Y4Si3O12. SEM showed that the gradient SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 coating had a more compact surface than the other coatings did. Isothermal oxidation tests at 1500°C in air showed that the weight loss curves of the as-prepared C/C composites showed a linear tendency with time and the weight loss rate of all coated samples increased significantly after 73 h. The coating could protect the C/C composites from oxidation at 1500°C for 73 h in air with a weight loss rate of 1.01 × 10-4 g · cm-2 · h-1. The SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 was the better coating at high temperature than other coatings.",

keywords = "Carbon/carbon composites, Coating, Plasma spraying, Yttrium Silicate",

author = "Min Huang and Li, {Ke Zhi} and Li, {He Jun} and Huang, {Jian Feng} and Fu, {Qian Gang}",

year = "2010",

month = jun,

language = "英语",

volume = "25",

pages = "187--191",

journal = "Xinxing Tan Cailiao/New Carbon Materials",

issn = "2097-1605",

publisher = "Science Press ",

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TY - JOUR

T1 - Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying

AU - Huang, Min

AU - Li, Ke Zhi

AU - Li, He Jun

AU - Huang, Jian Feng

AU - Fu, Qian Gang

PY - 2010/6

Y1 - 2010/6

N2 - Different yttrium silicate coatings for SiC-coated C/C composites were designed and prepared by an atmospheric plasma spray method to prevent the C/C composites from oxidation. XRD profiles showed that the coating was composed of Y2SiO5, Y2Si2O7, and Y4Si3O12. SEM showed that the gradient SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 coating had a more compact surface than the other coatings did. Isothermal oxidation tests at 1500°C in air showed that the weight loss curves of the as-prepared C/C composites showed a linear tendency with time and the weight loss rate of all coated samples increased significantly after 73 h. The coating could protect the C/C composites from oxidation at 1500°C for 73 h in air with a weight loss rate of 1.01 × 10-4 g · cm-2 · h-1. The SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 was the better coating at high temperature than other coatings.

AB - Different yttrium silicate coatings for SiC-coated C/C composites were designed and prepared by an atmospheric plasma spray method to prevent the C/C composites from oxidation. XRD profiles showed that the coating was composed of Y2SiO5, Y2Si2O7, and Y4Si3O12. SEM showed that the gradient SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 coating had a more compact surface than the other coatings did. Isothermal oxidation tests at 1500°C in air showed that the weight loss curves of the as-prepared C/C composites showed a linear tendency with time and the weight loss rate of all coated samples increased significantly after 73 h. The coating could protect the C/C composites from oxidation at 1500°C for 73 h in air with a weight loss rate of 1.01 × 10-4 g · cm-2 · h-1. The SiC/Y4Si3O12/ Y2Si2O7/Y2SiO5 was the better coating at high temperature than other coatings.

KW - Carbon/carbon composites

KW - Coating

KW - Plasma spraying

KW - Yttrium Silicate

UR - http://www.scopus.com/inward/record.url?scp=77954467690&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:77954467690

SN - 2097-1605

VL - 25

SP - 187

EP - 191

JO - Xinxing Tan Cailiao/New Carbon Materials

JF - Xinxing Tan Cailiao/New Carbon Materials

IS - 3

ER -

Yttrium silicate coatings for SiC coated C/C composites prepared by atmospheric plasma spraying

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Keywords

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