Oxidation protection of carbon materials by acid phosphate impregnation

Weiming Lu; D. D.L. Chung

doi:10.1016/S0008-6223(01)00297-4

Oxidation protection of carbon materials by acid phosphate impregnation

Weiming Lu
, D. D.L. Chung

Department of Mechanical and Aerospace Engineering

University at Buffalo

SUNY Buffalo

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

96 Scopus citations

Abstract

Acid phosphate impregnation, with ozone pre-treatment, improves the oxidation resistance of carbon materials (polycrystalline graphite and pitch-based carbon fiber), as shown by weight measurement in air up to 1500 °C. The impregnation involves using phosphoric acid and dissolved aluminum hydroxide in the molar ratio 12:1 and results in a rough, white and hard aluminum metaphosphate coating of weight about 20% of that of the carbon before the treatment. Without ozone pre-treatment, the impregnation is not effective. Without aluminum hydroxide, the impregnation even degrades the oxidation resistance of the carbon.

Original language	English
Pages (from-to)	1249-1254
Number of pages	6
Journal	Carbon
Volume	40
Issue number	8
DOIs	https://doi.org/10.1016/S0008-6223(01)00297-4
State	Published - Jul 2002

Keywords

A. Carbon fibers, Synthetic graphite
B. Oxidation, Impregnation
C. Thermal analysis

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10.1016/S0008-6223(01)00297-4

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title = "Oxidation protection of carbon materials by acid phosphate impregnation",

abstract = "Acid phosphate impregnation, with ozone pre-treatment, improves the oxidation resistance of carbon materials (polycrystalline graphite and pitch-based carbon fiber), as shown by weight measurement in air up to 1500 °C. The impregnation involves using phosphoric acid and dissolved aluminum hydroxide in the molar ratio 12:1 and results in a rough, white and hard aluminum metaphosphate coating of weight about 20\% of that of the carbon before the treatment. Without ozone pre-treatment, the impregnation is not effective. Without aluminum hydroxide, the impregnation even degrades the oxidation resistance of the carbon.",

keywords = "A. Carbon fibers, Synthetic graphite, B. Oxidation, Impregnation, C. Thermal analysis",

author = "Weiming Lu and Chung, \{D. D.L.\}",

year = "2002",

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doi = "10.1016/S0008-6223(01)00297-4",

language = "English",

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T1 - Oxidation protection of carbon materials by acid phosphate impregnation

AU - Lu, Weiming

AU - Chung, D. D.L.

PY - 2002/7

Y1 - 2002/7

N2 - Acid phosphate impregnation, with ozone pre-treatment, improves the oxidation resistance of carbon materials (polycrystalline graphite and pitch-based carbon fiber), as shown by weight measurement in air up to 1500 °C. The impregnation involves using phosphoric acid and dissolved aluminum hydroxide in the molar ratio 12:1 and results in a rough, white and hard aluminum metaphosphate coating of weight about 20% of that of the carbon before the treatment. Without ozone pre-treatment, the impregnation is not effective. Without aluminum hydroxide, the impregnation even degrades the oxidation resistance of the carbon.

AB - Acid phosphate impregnation, with ozone pre-treatment, improves the oxidation resistance of carbon materials (polycrystalline graphite and pitch-based carbon fiber), as shown by weight measurement in air up to 1500 °C. The impregnation involves using phosphoric acid and dissolved aluminum hydroxide in the molar ratio 12:1 and results in a rough, white and hard aluminum metaphosphate coating of weight about 20% of that of the carbon before the treatment. Without ozone pre-treatment, the impregnation is not effective. Without aluminum hydroxide, the impregnation even degrades the oxidation resistance of the carbon.

KW - A. Carbon fibers, Synthetic graphite

KW - B. Oxidation, Impregnation

KW - C. Thermal analysis

UR - https://www.scopus.com/pages/publications/0036642967

U2 - 10.1016/S0008-6223(01)00297-4

DO - 10.1016/S0008-6223(01)00297-4

M3 - Article

SN - 0008-6223

VL - 40

SP - 1249

EP - 1254

JO - Carbon

JF - Carbon

IS - 8

ER -

Oxidation protection of carbon materials by acid phosphate impregnation

Abstract

Keywords

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