Abstract To clarify and comprehend the interfacial compatibility of single crystal superalloy and ceramic core, the interface reaction of nickel-based single crystal superalloy CMSX-4 and silicon oxide ceramic core during directional solidification is investigated. The results revealed that a continuously distributed Al2O3 layer is formed at the interface of superalloy / silicon oxide ceramic core. Moreover, it is also found that a discontinuously distributed Ta/Ti enrichment carbide layer, (Ta/Ti)C, is formed at the interface of Al2O3 layer/superalloy. The formation mechanism of interface reaction between the nickel-based single crystal superalloy and silicon oxide ceramic core is analyzed.

中文翻译：

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镍基单晶高温合金CMSX-4与氧化硅陶瓷芯界面反应的一些新观察

摘要 为阐明和理解单晶高温合金与陶瓷芯的界面相容性，研究了镍基单晶高温合金CMSX-4与氧化硅陶瓷芯在定向凝固过程中的界面反应。结果表明，在高温合金/氧化硅陶瓷芯的界面处形成了连续分布的Al2O3层。此外，还发现在Al2O3层/高温合金的界面处形成了不连续分布的Ta/Ti富集碳化物层(Ta/Ti)C。分析了镍基单晶高温合金与氧化硅陶瓷核界面反应的形成机理。