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首页> 外文期刊>Materials Science and Engineering >Mechanical properties and thermal conductivity of a temperature resistance hollow glass microspheres/borosilicate glass buoyance material
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Mechanical properties and thermal conductivity of a temperature resistance hollow glass microspheres/borosilicate glass buoyance material

机译：耐高温中空玻璃微球/硼硅酸盐玻璃浮力材料的力学性能和导热系数

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摘要

A temperature resistance buoyancy material was fabricated through a tert-butyl alcohol gelcasting process with borosilicate glass (BG) and hollow glass microspheres (HGMs) as the matrix and filler, respectively. The effects of the mass ratio of HGMs to BG and sintering temperature on the microstructure, thermal conductivity, and mechanical properties of the composite were studied. The results show that HGMs were bonded together by the BG, and the sample sintered at 750 ℃ exhibited a broad pore size distribution, from several microns to more than one hundred microns. The thermal conductivity experimental values of all the samples were less than that of Hashin-Shtrikman upper bound (HS~+) prediction but agreed well with that predicted from effective medium percolation theory. The relationship between compressive strength and relative density was predicted by the Gibson-Ashby model, with the calibration factor phi below 0.7. Young's modulus values obtained from the experiment were below that of HS~+ prediction. The modulus values of the four types of samples sintered at 650 ℃ agreed well with the Pabst model prediction, while the values of the samples sintered at 700 ℃ and 750 ℃ were distributed in a zone between Ashby-Gibson model and HS~+ prediction.
机译：通过叔丁醇凝胶浇铸工艺分别以硼硅酸盐玻璃（BG）和中空玻璃微球（HGMs）为基质和填料来制造耐热浮力材料。研究了HGM与BG的质量比和烧结温度对复合材料的微观结构，导热性和力学性能的影响。结果表明，HGMs通过BG结合在一起，在750℃烧结的样品呈现出从几微米到一百多微米的宽孔径分布。所有样品的热导率实验值均小于Hashin-Shtrikman上限（HS〜+）的预测值，但与有效介质渗透理论的预测值相吻合。用Gibson-Ashby模型预测了抗压强度与相对密度之间的关系，其中校准系数phi低于0.7。从实验获得的杨氏模量值低于HS〜+预测值。在650℃烧结的四种样品的模量值与Pabst模型的预测吻合很好，而在700℃和750℃烧结的样品的模量值分布在Ashby-Gibson模型与HS〜+预测之间的区域中。

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  • 来源
    《Materials Science and Engineering》 |2016年第30期|604-614|共11页
  • 作者

    Sue Ren; Jiachen Liu; Anran Guo; Wenjie Zang; Haitao Geng; Xin Tao; Haiyan Du;

  • 作者单位

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hollow glass microspheres; Borosilicate glass; Mass ratio; Thermal conductivity; Mechanical properties; Temperature resistance;

    机译：中空玻璃微球;硼硅酸盐玻璃;质量比导热系数;机械性能耐温性;

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