B4C-MODIFIED SiO2-PHENOLIC COMPOSITES FOR ENHANCED ABLATION RESISTANCE

Maoyuan Li, Lin Lu, Zhen Dai, Yiqiang Hong, Weiwei Chen, Yuping Zhang and Yingjie Qiao
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Maoyuan Li: College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China†Beijing System Design Institute of Electro-Mechanic Engineering, Beijing 100854, P. R. China
Lin Lu: #x2020;Beijing System Design Institute of Electro-Mechanic Engineering, Beijing 100854, P. R. China
Zhen Dai: #x2020;Beijing System Design Institute of Electro-Mechanic Engineering, Beijing 100854, P. R. China
Yiqiang Hong: #x2020;Beijing System Design Institute of Electro-Mechanic Engineering, Beijing 100854, P. R. China
Weiwei Chen: #x2021;Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
Yuping Zhang: #x2021;Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
Yingjie Qiao: College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China

Surface Review and Letters (SRL), 2017, vol. 24, issue 08, 1-7

Abstract: In the present paper, the silica-phenolic composite (S-Ph) composites with different amount of B4C were prepared, and the ablation tests of these composites were carried out using oxygen–acetylene jet. The ablation process was systematically investigated. The addition of B4C with appropriate amount can efficiently improve the ablation resistance of S-Ph. The results showed that S-Ph containing B4C powder of 2wt.% exhibited the lowest linear and mass ablation rate. The influence mechanism for the results was analyzed deeply. The surface morphologies, phase composition, density and thermal conductivity of composites were characterized using a scanning electron microscope (SEM), X-Ray Diffraction (XRD), Archimedes method, and thermal conductivity meter, respectively. The present investigation will provide a theoretical basis for the preparation of the ablation resistant material.

Keywords: Silica-phenolic composite; B4C; ablation resistant (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17501116

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