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高温防护涂层与单晶高温合金界面互扩散行为研究进展

杨姗洁1,郭谦2,曾强1,彭徽3,郭洪波2   

  1. 1. 北京钢研高纳科技股份有限公司
    2. 北京航空航天大学
    3. 北京航空航天大学材料科学与工程学院
  • 收稿日期:2025-12-08 修回日期:2025-12-29 出版日期:2026-02-03 发布日期:2026-02-03
  • 通讯作者: 郭洪波

Research Progress on Inter-diffusion Behavior at the Interface Between High-Temperature Protective Coatings and Single-Crystal Superalloys

  • Received:2025-12-08 Revised:2025-12-29 Online:2026-02-03 Published:2026-02-03

摘要: 高温防护涂层与单晶高温合金界面互扩散行为是影响航空发动机涡轮叶片服役寿命与可靠性的关键问题。随着航空发动机涡轮进口温度的不断提升,涂层与单晶合金基体间的元素互扩散问题变得尤为突出。本文系统综述了单晶高温合金/涂层体系的互扩散过程,明确了互扩散区(IDZ)、基体扩散区(SDZ)和二次反应区(SRZ)的形成机制;从单晶高温合金成分、晶体取向、热-力耦合环境、薄壁效应等角度探讨了涂层/单晶高温合金互扩散行为及力学性能的影响因素及规律。同时,系统评估了各类涂层/单晶高温合金界面调控方法的研究进展及存在问题,并提出了涂层的设计思路和未来发展方向展望。

关键词: 高温防护涂层, 单晶高温合金, 元素互扩散, 互扩散区(IDZ), 基体扩散区(SDZ), 二次反应区(SRZ), 阻扩散涂层

Abstract: The interdiffusion behavior at the interface between high-temperature protective coatings and single-crystal superalloys is a critical issue affecting the service life and reliability of aircraft engine turbine blades. With the continuous increase in turbine inlet temperatures of aircraft engines, the elemental interdiffusion between coatings and single-crystal superalloys has become particularly serious. This article systematically reviews the interdiffusion process between single-crystal superalloy and high temperature protective coating systems, clarifying the formation mechanisms of the interdiffusion zone (IDZ), substrate diffusion zone (SDZ), and secondary reaction zone (SRZ). The influencing factors and laws of the interdiffusion behavior and mechanical properties of coatings/single crystal superalloys were explored from the perspectives of single crystal composition, orientation, thermal-mechanical coupling environment, and thin-wall effect of single crystal superalloys. Additionally, it provides a comprehensive evaluation of research progress and existing challenges in interface control methods for various coatings/superalloys, along with proposed design strategies and future development directions.

Key words: High-Temperature Protective Coatings, Single-Crystal Superalloys, Inter-diffusion Behavior, Interdiffusion zone(IDZ), Substrate Diffusion Zone(SDZ), Secondary Reaction Zone(SRZ), Diffusion resistant coating

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