Effect of B2O3/SiO2 mass ratio on oxidation resistant property of phosphate coating for C/C composites

G. D. Sun; H. J. Li; Q. G. Fu; Q. Zhang

doi:10.1179/1432891714Z.000000000770

Effect of B₂O₃/SiO₂ mass ratio on oxidation resistant property of phosphate coating for C/C composites

G. D. Sun, H. J. Li, Q. G. Fu, Q. Zhang

School of Materials Sience and Engineering

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

10 Scopus citations

Abstract

To prevent carbon/carbon (C/C) composites from oxidation, a phosphate coating was prepared on the composites by a simple and low cost slurry technique. The effect of B₂O₃/SiO₂ mass ratio on the microstructure and oxidation resistant property of phosphate coating was studied. The coating characterised by scanning electron microscopy and X-ray diffraction is mainly composed of SiO₂, BPO₄ and Al(PO₃)₃. Oxidation tests show that, as the mass ratio of B₂O₃ and SiO₂ is 1:1, the coating possessed excellent oxidation resistant ability. After oxidation in air at 700°C for 30 h and thermal cycling between 900°C and room temperature for 50 times, the weight losses of the coated samples were only 4·3 and 0·35% respectively. The weight loss of the coated C/C composites was considered to arise from the formation of bubble holes and microcracks in the phosphate coating.

Original language	English
Pages (from-to)	S4715-S4718
Journal	Materials Research Innovations
Volume	18
DOIs	https://doi.org/10.1179/1432891714Z.000000000770
State	Published - 1 Jul 2014

Keywords

C/C composites
Oxidation resistance
Phosphate coating

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10.1179/1432891714Z.000000000770

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title = "Effect of B2O3/SiO2 mass ratio on oxidation resistant property of phosphate coating for C/C composites",

abstract = "To prevent carbon/carbon (C/C) composites from oxidation, a phosphate coating was prepared on the composites by a simple and low cost slurry technique. The effect of B2O3/SiO2 mass ratio on the microstructure and oxidation resistant property of phosphate coating was studied. The coating characterised by scanning electron microscopy and X-ray diffraction is mainly composed of SiO2, BPO4 and Al(PO3)3. Oxidation tests show that, as the mass ratio of B2O3 and SiO2 is 1:1, the coating possessed excellent oxidation resistant ability. After oxidation in air at 700°C for 30 h and thermal cycling between 900°C and room temperature for 50 times, the weight losses of the coated samples were only 4·3 and 0·35% respectively. The weight loss of the coated C/C composites was considered to arise from the formation of bubble holes and microcracks in the phosphate coating.",

keywords = "C/C composites, Oxidation resistance, Phosphate coating",

author = "Sun, {G. D.} and Li, {H. J.} and Fu, {Q. G.} and Q. Zhang",

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doi = "10.1179/1432891714Z.000000000770",

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T1 - Effect of B2O3/SiO2 mass ratio on oxidation resistant property of phosphate coating for C/C composites

AU - Sun, G. D.

AU - Li, H. J.

AU - Fu, Q. G.

AU - Zhang, Q.

N1 - Publisher Copyright: © W. S. Maney & Son Ltd. 2014.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - To prevent carbon/carbon (C/C) composites from oxidation, a phosphate coating was prepared on the composites by a simple and low cost slurry technique. The effect of B2O3/SiO2 mass ratio on the microstructure and oxidation resistant property of phosphate coating was studied. The coating characterised by scanning electron microscopy and X-ray diffraction is mainly composed of SiO2, BPO4 and Al(PO3)3. Oxidation tests show that, as the mass ratio of B2O3 and SiO2 is 1:1, the coating possessed excellent oxidation resistant ability. After oxidation in air at 700°C for 30 h and thermal cycling between 900°C and room temperature for 50 times, the weight losses of the coated samples were only 4·3 and 0·35% respectively. The weight loss of the coated C/C composites was considered to arise from the formation of bubble holes and microcracks in the phosphate coating.

AB - To prevent carbon/carbon (C/C) composites from oxidation, a phosphate coating was prepared on the composites by a simple and low cost slurry technique. The effect of B2O3/SiO2 mass ratio on the microstructure and oxidation resistant property of phosphate coating was studied. The coating characterised by scanning electron microscopy and X-ray diffraction is mainly composed of SiO2, BPO4 and Al(PO3)3. Oxidation tests show that, as the mass ratio of B2O3 and SiO2 is 1:1, the coating possessed excellent oxidation resistant ability. After oxidation in air at 700°C for 30 h and thermal cycling between 900°C and room temperature for 50 times, the weight losses of the coated samples were only 4·3 and 0·35% respectively. The weight loss of the coated C/C composites was considered to arise from the formation of bubble holes and microcracks in the phosphate coating.

KW - C/C composites

KW - Oxidation resistance

KW - Phosphate coating

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U2 - 10.1179/1432891714Z.000000000770

DO - 10.1179/1432891714Z.000000000770

M3 - 文章

AN - SCOPUS:84907855038

SN - 1432-8917

VL - 18

SP - S4715-S4718

JO - Materials Research Innovations

JF - Materials Research Innovations

ER -

Effect of B₂O₃/SiO₂ mass ratio on oxidation resistant property of phosphate coating for C/C composites

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Keywords

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