耐久性柱状结构热障涂层设计  

Durable Columnar Structure Design for Thermal Barrier Coatings

作　　者：成波 李建军[2] 安国升[2] 李文生[2] 张辛健[2] Cheng Bo;Li Jianjun;An Guosheng;Li Wensheng;Zhang Xinjian(State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《稀有金属材料与工程》2022年第5期1660-1666,共7页Rare Metal Materials and Engineering

基　　金：Sponsored by State Key Laboratory for Mechanical Behavior of Materials;National Natural Science Foundation of China(51901093,51674130);Hongliu Distinguished Young Talent Support Program Project of Lanzhou University of Technology;National High-End Foreign Experts Program of China(GDT20186200331);International Science and Technology Correspondent Program of Gansu Province(17JR7WA017);Sponsored by Science and Technology International Cooperation Demonstrative Base of Metal Surface Engineering Along the Silk Road。

摘　　要：热障涂层(TBC)被广泛应用于热端金属部件表面,使其免受高温气体侵蚀,其微观组织结构及服役性能与制备工艺和服役状态密切相关并相互作用。本文从热生长氧化物(TGO)增厚、相变、烧结等方面讨论了各种应力诱因导致的TBC失效机理,综述了目前常用于陶瓷层柱状结构制备的方法及其在缓和TBC服役过程中应力的应用。由于TBC制备工艺及服役条件不尽相同,通过与标准TBC比较,评价了不同工艺下制备的TBC使用寿命,总结了柱状结构TBC的长寿命服役机理。本文综述了柱状热障涂层的应力源、微观结构、制备工艺和使用性能的相互作用关系,为高性能TBC设计提供了参考。The thermal barrier coatings(TBCs)are employed to protect metallic components from high temperature gas,and their microstructure and service performance are closely related to and have the mutual effect with the preparation process and service condition.This research reviews TBCs failure mechanisms caused by different stress inducements from the perspective of thermally grown oxide(TGO)thickening,phase transformations,and sintering.Subsequently,the preparation methods of TBCs with columnar structure are summarized,as well as their functions of releasing stress during TBC service.Although the preparation process and service conditions are different,the lifetimes of TBCs prepared by different methods are evaluated by comparing with that of the standard TBCs.The long lifetime service mechanism of TBCs with column structure is summarized.This research reviews the interaction effects among the stress source,microstructure,preparation process,and service performance of TBCs,providing guidance for the advanced and durable TBCs design.

关 键 词：热障涂层 耐久结构设计 柱状结构 寿命 

分 类 号：TG174.4[金属学及工艺—金属表面处理]