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首页> 外文会议>Proceedings of 20th IFHTSE >Bonding strength and thermal shock resistance of rhenium coating on fabric-base pierced carbon-carbon composites substrate prepared by chemical vapor deposition
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Bonding strength and thermal shock resistance of rhenium coating on fabric-base pierced carbon-carbon composites substrate prepared by chemical vapor deposition

机译：化学气相沉积法制备的fabric基碳-碳复合材料基织物上of涂层的结合强度和抗热震性

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摘要

Rhenium is a promising coating material for liquid rocket nozzles because of its extremely superior performance, such as high melting point, high temperature strength and excellent fatigue properties. In this work, rhenium coatings were prepared on fabric-base pierced carbon-carbon substrates by chemical vapor deposition. Bonding strength and thermal shock resistance of rhenium coating on carbon-carbon substrates were investigated respectively. The bonding strength between the coating and the substrate was tested using different methods including tensile tests and shearing tests. Thermal shock resistance was investigated by induction furnace from high temperature (2000 ℃) to room temperature in air atmosphere. The characteristics of the coatings after the thermal shock test were studied by scanning electron microscopy (SEM). The results indicated that the highest average value of tensile fracture strength is 20.4 MPa and shearing fracture strength is 21 MPa on the XZ-direction of the fabric-base pierced carbon-carbon composites. The thermal shock lives depended on the number of thermal shock cycles and the thickness of rhenium transition layer. It is also concluded that cracks occured when the samples were cooled to 1100℃.
机译：hen由于其极高的性能（如高熔点，高温强度和出色的疲劳特性）而成为液体火箭喷嘴的有前途的涂料。在这项工作中，by涂层是通过化学气相沉积法在织物基穿孔碳-碳基材上制备的。分别研究了碳-碳基体上coating涂层的结合强度和抗热震性。使用包括拉伸测试和剪切测试在内的不同方法来测试涂层与基材之间的粘合强度。用感应炉研究了高温（2000℃）到大气中室温的耐热冲击性能。通过扫描电子显微镜（SEM）研究了热冲击试验后的涂层特性。结果表明，在织物基穿孔碳-碳复合材料的XZ方向上，拉伸断裂强度的最高平均值为20.4 MPa，剪切断裂强度的平均值为21 MPa。热冲击寿命取决于热冲击循环的次数和rh过渡层的厚度。得出的结论是，将样品冷却至1100℃时会出现裂纹。

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  • 来源
    《Proceedings of 20th IFHTSE》|2012年|712-715|共4页
  • 会议地点 Beijing(CN)
  • 作者

    Guo Yue; Zhang Hong; Bai Shu-xin; Ye Yi-cong;

  • 作者单位

    College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;

    College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;

    College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;

    College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 热处理;
  • 关键词

    rhenium coating; carbon/carbon composites; bonding strength; thermal shock resistance;

    机译：涂层;碳/碳复合材料;粘结强度;抗热震性;

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