Advanced Ceramic Matrix Composites (CMCs) for High Temperature Applications
Advanced Ceramic Matrix Composites (CMCs) for High Temperature Applications
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发表时间：
2005-10
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通讯作者：
M. Singh
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作者：
M. Singh
先进陶瓷基复合材料（CMC）使材料能够用于航空航天、能源和核工业中的许多苛刻应用。在航空航天系统中，这些材料正被考虑用于喷气发动机的热段，如燃烧室衬套、叶片、喷嘴部件、鼻锥、再入飞行器的前缘和空间推进部件。在能源和环境行业中的应用包括辐射加热器管、热交换器、热回收器、气体和柴油颗粒过滤器以及用于发电的陆基涡轮机的组件。这些材料也被考虑用于聚变反应堆的第一壁和包层组件。在过去的几年中，许多CMC组件已被开发并成功地测试了各种航空航天和地面应用。然而，仍然存在一些挑战，减缓了这些材料的大规模实施。它们包括可靠的制造和制造、装配和集成、涂层、属性建模和寿命预测、设计代码和数据库、维修和翻新以及成本。制造具有高密度和可定制基质性质的网状和复杂形状的部件是相当昂贵的，并且即使这样也不能实现各种期望的性质。在本演示文稿中，将提供一些成功的CMC组件开发和测试的例子。此外，关键需要强大的制造，连接和组装技术在成功实施这些系统将进行讨论。
Advanced ceramic matrix composites (CMCs) are enabling materials for a number of demanding applications in aerospace, energy, and nuclear industries. In the aerospace systems, these materials are being considered for applications in hot sections of jet engines such as the combustor liner, vanes, nozzle components, nose cones, leading edges of reentry vehicles, and space propulsion components. Applications in the energy and environmental industries include radiant heater tubes, heat exchangers, heat recuperators, gas and diesel particulate filters, and components for land based turbines for power generation. These materials are also being considered for use in the first wall and blanket components of fusion reactors. In the last few years, a number of CMC components have been developed and successfully tested for various aerospace and ground based applications. However, a number of challenges still remain slowing the wide scale implementation of these materials. They include robust fabrication and manufacturing, assembly and integration, coatings, property modeling and life prediction, design codes and databases, repair and refurbishment, and cost. Fabrication of net and complex shape components with high density and tailorable matrix properties is quite expensive, and even then various desirable properties are not achievable. In this presentation, a number of examples of successful CMC component development and testing will be provided. In addition, critical need for robust manufacturing, joining and assembly technologies in successful implementation of these systems will be discussed.