Surface morphology and microstructure evolution of B4C ceramic hollow microspheres prepared by wet coating method on a pyrolysis substrate

Chen, Ruichong; Qi, Jianqi; Guo, Xiaofeng; Ye, Diyin; Wang, Xiuling; Shi, Qiwu; Wu, Di; Liao, Zhijun; Lu, Tiecheng

doi:10.1016/j.ceramint.2019.01.103

Cited by 8 publications

(1 citation statement)

References 19 publications

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“…For polymer-derived silicon carbide ceramic composites, Santhosh et al [8] studied the effects of pyrolysis temperature on the microstructure and thermal conductivity of 2 International Journal of Aerospace Engineering polymer-derived silicon carbide ceramic composites by TG, FT-IR, TEM, and SEM. In recent years, the influence of different processes on the microstructure during the production of composite materials has been explored, including three-dimensional carbon fiber-reinforced ceramic matrix composites [9] (as shown in Figure 4), ceramic hollow microsphere composites [10], carbon-mullite composites [11], and silicon carbide ceramic composites [12]. Most of the previous studies were conducted to test and analyze the influence of different pyrolysis temperatures on the microstructure of materials and to explore the evolution of the microstructure of materials under different technological processes.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Multiscale Heat Transfer Characteristics of Resin-Based Ablative Material under Aerodynamic Heating

Gao,

Deng,

Han

et al. 2023

International Journal of Aerospace Engineering

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This paper is aimed at investigating the microstructure evolution of resin-based ablative materials under aerodynamic heating. The microstructure, morphology, material density, and thermophysical parameters at different positions of the material after aerodynamic heating were deeply studied. The changes in the microstructural characteristics of materials caused by complex reaction processes were investigated, including microstructural morphology, porosity, the overlap relationship between microstructural components, and the mutual positional relationship. The relationship between microstructural evolution and material heat transfer is discussed. By analyzing the heat transfer mechanism and heat transfer path of the microstructure, combing with the analysis results of the evolution of the microstructure and the physical properties of the material, multiscale heat transfer unit cell models were established to predict the equivalent thermal conductivity. Thereby, the evolution of physical properties and microstructure of resin-based ablative materials under aerodynamic heating and the relationship between microstructure evolution and heat transfer process are obtained. It can improve the accuracy of ablative heat transfer simulation. In addition, it can provide reference for the process design of ablative materials and promote the application and development of ablative materials in the field of aircraft.

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