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首页> 外文OA文献 >Furnace Cyclic Behavior of Plasma-Sprayed Zirconia-Yttria and Multi-Component Rare Earth Oxide Doped Thermal Barrier Coatings
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Furnace Cyclic Behavior of Plasma-Sprayed Zirconia-Yttria and Multi-Component Rare Earth Oxide Doped Thermal Barrier Coatings

机译：等离子体喷涂氧化锆-氧化钇和多组分掺杂稀土氧化物的热障涂层的炉循环行为

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Ceramic thermal barrier coatings will play an increasingly important role in advanced gas turbine engines because of their ability to enable further increases in engine temperatures. However, the coating performance and durability become a major concern under the increasingly harsh thermal cycling conditions. Advanced zirconia- and hafnia-based cluster oxide thermal barrier coatings with lower thermal conductivity and improved thermal stability are being developed using a high-heat-flux laser-rig based test approach. Although the new composition coatings were not yet optimized for cyclic durability, an initial durability screening of numerous candidate coating materials was carried out using conventional furnace cyclic tests. In this paper, furnace thermal cyclic behavior of the advanced plasma-sprayed zirconia-yttria-based thermal barrier coatings that were co-doped with multi-component rare earth oxides was investigated at 1163 C using 45 min hot cycles. The ceramic coating failure mechanisms were studied by using scanning electron microscopy combined with X-ray diffraction phase analysis after the furnace tests. The coating cyclic lifetime will be discussed in relation to coating phase structures, total dopant concentrations, and other properties.
机译：陶瓷隔热涂层在先进的燃气涡轮发动机中将发挥越来越重要的作用，因为它们能够进一步提高发动机温度。然而，在日益苛刻的热循环条件下，涂层性能和耐久性成为主要问题。使用基于高热通量激光钻机的测试方法，正在开发具有较低热导率和更高热稳定性的高级氧化锆和氧化f基团簇氧化物热障涂层。尽管尚未针对循环耐久性对新的成分涂层进行优化，但使用常规的熔炉循环测试对众多候选涂料进行了初步的耐久性筛选。在本文中，对先进的等离子喷涂氧化锆-氧化钇基热障涂层进行了炉膛热循环行为，该涂层与多组分稀土氧化物共掺杂，使用45分钟的热循环，温度为1163C。炉试验后，通过扫描电子显微镜结合X射线衍射相分析研究了陶瓷涂层的破坏机理。将针对涂层相结构，总掺杂剂浓度和其他性能来讨论涂层循环寿命。

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