Microstructure and isothermal oxidation of 3Al2O3·2SiO2/SiC coating on high and low density carbon-carbon composites

Gbologah, Lemuel; Xiong, Xiang; Hao, Hanlin; Zeng, Yi; Zhang, Wu-zhuang

doi:10.1007/s11771-013-1455-5

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The tetraethyl orthosilicate in the Layer I solution was hydrolyzed with ethanol as a solvent and phosphoric acid as a catalyst. The hydrolysis of tetraethyl orthosilicate is a widely used sol-gel technique for preparing new materials such as glass and ceramics with SiO 2 as the matrix material [23,24].…”

Section: Microstructures Of the Coatingmentioning

confidence: 99%

“…The hydrolysis of tetraethyl orthosilicate is a widely used sol-gel technique for preparing new materials such as glass and ceramics with SiO2 as the matrix material [23,24].…”

Section: The Hydrolysis Reaction Of Tetraethyl Orthosilicate Is Shown...mentioning

confidence: 99%

“…Figure 5a shows the microstructure of the gradient coating formed after the Layer I and Layer II solutions were alternatingly brushed three times and pretreated according to the temperature curve in Figure 1b. The hydrolysis of tetraethyl orthosilicate is a widely used sol-gel technique for preparing new materials such as glass and ceramics with SiO2 as the matrix material [23,24].…”

Section: The Hydrolysis Reaction Of Tetraethyl Orthosilicate Is Shown...mentioning

confidence: 99%

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Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Zheng,

Yin

2024

Materials

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We studied a gradient anti-oxidation coating of C/C composite materials for aircraft brake discs with a simple process and low costs. The gradient coating consists of two layers, of which the inner layer is prepared with tetraethyl orthosilicate (Si (OC2H5)4), C2H5OH, H3PO4 and B4C, and the outer layer is prepared with Na2B4O7.10H2O, B2O3, and SiO2 powder. The experimental results show that after being oxidized at 700 °C for 15 h, the oxidation weight loss of the sample with the coating was only −0.17%. At the same time, after 50 thermal cycles in air at 900 °C, the sample’s oxidation weight loss was only −0.06%. We conducted the 1:1 dynamic simulation test for aircraft brake discs, and the brake disc did not oxidize, thus meeting the requirements for aircraft use. In addition, the anti-oxidation mechanism of the coating was analyzed via scanning electron microscopy (SEM), X-ray diffraction (XRD), differential thermal analysis (DSC-TGA), and high-temperature in situ SEM.

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Section: Microstructures Of the Coatingmentioning

confidence: 99%

“…The hydrolysis of tetraethyl orthosilicate is a widely used sol-gel technique for preparing new materials such as glass and ceramics with SiO2 as the matrix material [23,24].…”

Section: The Hydrolysis Reaction Of Tetraethyl Orthosilicate Is Shown...mentioning

confidence: 99%

Section: The Hydrolysis Reaction Of Tetraethyl Orthosilicate Is Shown...mentioning

confidence: 99%

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Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Zheng,

Yin

2024

Materials

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Design of domain-limited CVI reactor for L-shaped C/C structure

Zhang³

et al. 2023

Journal of Materials Research and Technology

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Fabrication and characterization of Ni–Fe–P–TiO₂ nanocomposite coatings

Zhang

Pan

Chen

et al. 2022

Int. J. Mod. Phys. B

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This study develops the Ni–Fe–P–TiO2 nanocomposite coatings via an electroless deposition process. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to determine the coating structures. Hardness and wear tests were conducted to measure the coating’s mechanical performance, and polarization curves were recorded to evaluate the corrosion behavior. The results show that the TiO2 nanoparticles are incorporated into the coatings. The proper addition of TiO2 refines the coating surface morphology without changing the coating phase constituents. The best mechanical and corrosion performance is obtained for the 0.5-g/L modified Ni–Fe–P–TiO2 sample, owing to its compact surface feature and well-dispersed TiO2 nanoparticles.

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Microstructure and isothermal oxidation of 3Al2O3·2SiO2/SiC coating on high and low density carbon-carbon composites

Cited by 3 publications

References 11 publications

Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Design of domain-limited CVI reactor for L-shaped C/C structure

Fabrication and characterization of Ni–Fe–P–TiO₂ nanocomposite coatings

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Microstructure and isothermal oxidation of 3Al2O3·2SiO2/SiC coating on high and low density carbon-carbon composites

Cited by 3 publications

References 11 publications

Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Preparation of a Gradient Anti-Oxidation Coating for Aircraft C/C Composite Brake Disc and Its High-Temperature In Situ Self-Healing Performance

Design of domain-limited CVI reactor for L-shaped C/C structure

Fabrication and characterization of Ni–Fe–P–TiO2 nanocomposite coatings

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Fabrication and characterization of Ni–Fe–P–TiO₂ nanocomposite coatings