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首页> 外文会议>International Conference on Advanced Ceramics and Composites >FIBER PUSH OUT TESTING BEFORE AND AFTER EXPOSURE: RESULTS FOR AN MI SIC/SIC COMPOSITE
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FIBER PUSH OUT TESTING BEFORE AND AFTER EXPOSURE: RESULTS FOR AN MI SIC/SIC COMPOSITE

机译：纤维在暴露前后推出测试：MI SiC / SIC复合材料的结果

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The increased interest in ceramic matrix composites requires the knowledge of how the material behaves after periods of exposure to temperature and stress. An important parameter under consideration is the fiber/coat/matrix interfacial sliding, which has a direct impact on the residual properties of the material after exposure. A series of fiber push-out tests were conducted on Melt Infiltrated SiC/SiC material considered as a strong candidate for hot section applications in gas turbine engine especially in the combustor and turbine. Samples were exposed under conditions of creep or dwell fatigue at 1204 deg C for periods ranging from 10 hours to 2,000 hours under stresses of 110.4 MPa or 165.6 MPa. As part of this effort, the sample configuration was changed from the standard wedge shape sample to a uniform cross section where the sample was taken out of standard microstructural sample mounts. This allowed more samples to be manufactured in a more consistent manner. The results of the sample change from a transmission electron microscopy sample to a uniform cross section sample as well as the effects of exposure will be presented and discussed.
机译：增加对陶瓷基质复合材料的兴趣需要了解材料在暴露于温度和压力时的表现方式。所考虑的重要参数是纤维/涂层/基质界面滑动，其对暴露后物料的残留性能直接影响。在熔融渗透的SiC / SiC材料上进行了一系列纤维推出试验，被认为是燃气涡轮发动机中的热部分应用的强候选候选者，特别是在燃烧器和涡轮机中。样品在1204℃下在1204℃下在1204℃至2,000小时的10小时至2,000小时的条件下暴露样品在110.4MPa或165.6MPa的应力下。作为这一努力的一部分，样品配置从标准楔形样品改变为均匀的横截面，其中样品取出标准微观结构样品支架。这允许以更一致的方式制造更多的样品。将样品从透射电子显微镜样品改变为均匀横截面样本以及曝光的效果，并讨论。

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