Mullite fiber sealing pad with favorable high-temperature rebound resilience fabricated through colloidal processing

Shen, Sibo; Zhao, Yingna; Du, Haiyan; Wang, Mingchao; Zhao, Lilong; Tian, Geng; Liu, Jiachen

doi:10.1016/j.ceramint.2014.01.033

Cited by 11 publications

(2 citation statements)

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“…Thermal sealing [1][2][3][4] is one of the critical thermal protection systems in aerospace, energy and mechanical elds that uses sealing materials to ll the gaps in joints to prevent serious or even catastrophic thermal runaway. The working environments of sealing materials are usually very harsh, 5,6 such as high temperatures over 1000 °C, large thermal shocks and highfrequency vibrations in spacecras, furnaces, engines, etc., requiring materials with high thermomechanical properties and low thermal conductivity (k) to guarantee the system safety.…”

Section: Introductionmentioning

confidence: 99%

Medium-entropy ceramic aerogels for robust thermal sealing

Liu

Deng

et al. 2023

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Medium-entropy ceramic aerogels for robust thermal sealing

Liu

Deng

et al. 2023

J. Mater. Chem. A

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“…Mullite fiber/whisker frameworks with a high porosity have unique characters, such as nest structure [1], high rebound resilience [2] and low stress-strain ratio [3]. Besides the common properties, the porous mullite includes low thermal expansion coefficient, excellent thermal shock, corrosion resistance [4] and mechanical stability at elevated temperatures [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of heating parameters on sintering behaviors and properties of mullite whisker frameworks

et al. 2018

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Mullite whisker frameworks were fabricated by vapor-solid reaction with SiO2, Al2O3 and AlF3 powders as the whisker forming agent at high temperatures. The effects of heating temperature and soaking time on the weight loss, liner shrinkage, porosity, microstructure and compressive strength were investigated. The results showed that with the increasing of the sintering temperature and soaking time, the weight loss and liner shrinkage of the samples increased and the porosities decreased due to the accelerated vapor-solid reaction, resulting in strong bonding and grain growth of the mullite frameworks. The compressive strength of the samples increased with increasing the sintering temperature from 1500 to 1650°C, and decreased with the soaking time extended to more than 5 h for 1500°C and 2 h for 1650°C. A maximum compressive strength of 142 MPa at a porosity of 62.3% was obtained for the mullite whisker framework heated at 1500°C for 5 h. The enhanced strength was attributed to the strong bonding strength and fine mullite grains resulting from a relative lower heating temperature and a modest soaking time.

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