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首页> 外文期刊>Journal of Materials Research >C/C-SiC sandwich structures manufactured via liquid silicon infiltration
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C/C-SiC sandwich structures manufactured via liquid silicon infiltration

机译：通过液态硅渗透制造的C / C-SiC夹心结构

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摘要

In a new design approach, C/C-SiC sandwich structures have been realized via liquid silicon infiltration and in situ joining methods. In the first process step, the carbon fiber reinforced polymer preforms for the planar skin plates as well as for the core structures were manufactured via warm pressing and autoclave technique, using C fiber fabrics preimpregnated with phenolic resin. Thereby, two types of C/C-SiC core structures were used: Foldcore and grid core. In the second process step, the sandwich components were pyrolyzed separately, leading to porous C/C preforms and subsequently joined to a C/C sandwich structure, using an adhesive. In the last process step, the C/C structure was infiltrated with molten Si, and the SiC matrix was built up by a chemical reaction of Si and C, leading to a permanently joined C/C-SiC sandwich structure. For mechanical characterization, sandwich specimens were manufactured and tested in 4 point bending.
机译：在一种新的设计方法中，已经通过液态硅渗透和原位连接方法实现了C / C-SiC夹心结构。在第一步中，使用预浸渍酚醛树脂的C纤维织物，通过热压和高压釜技术，制造了用于平面蒙皮板和芯结构的碳纤维增强聚合物预成型件。因此，使用了两种类型的C / C-SiC芯结构：Foldcore和grid芯。在第二个工艺步骤中，将夹层组分分别热解，生成多孔C / C预成型坯，然后使用粘合剂将其连接到C / C夹层结构。在最后的工艺步骤中，C / C结构被熔融的硅渗透，并且通过Si和C的化学反应建立SiC基体，从而导致永久连接的C / C-SiC夹心结构。为了进行机械表征，制造了三明治样品并进行了4点弯曲测试。

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  • 来源
    《Journal of Materials Research》 |2017年第17期|3383-3393|共11页
  • 作者

    Heidenreich Bernhard; Koch Dietmar; Kraft Harald; Klett Yves;

  • 作者单位

    German Aerospace Center (DLR), Institute of Structures and Design, Stuttgart, Germany;

    German Aerospace Center (DLR), Institute of Structures and Design, Stuttgart, Germany;

    German Aerospace Center (DLR), Institute of Structures and Design, Stuttgart, Germany;

    University of Stuttgart, Institute of Aircraft Design, Stuttgart, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ceramic; composite; infiltration (chemical reaction);

    机译：陶瓷综合;渗透（化学反应）;

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