文章信息/Info

Title:

Advances in Damage and Fracture of Thermal Barrier Coatings

文章編號:

1674-3962(2020)11-0897-14

作者:

晉小超; 侯成; 吉新闊; 陳垚; 范學領

（西安交通大學航天航空學院 機械結構強度與振動國家重點實驗室，陜西 西安 710049）

Author(s):

JIN Xiaochao;  HOU Cheng;  JI Xinkuo;  CHEN Yao;  FAN Xueling

(State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

關鍵詞:

熱障涂層; 損傷; 斷裂; 失效; 應力

Keywords:

thermal barrier coating;  damage;  fracture;  failure;  stress

分類號:

TG174.4

DOI:

10.7502/j.issn.1674-3962.202007027

文獻標志碼:

A

摘要:

熱障涂層（thermal barrier coating, TBC）具有隔熱、抗氧化、抗腐蝕和抗沖刷等性能，能進一步提高熱端部件服役溫度和使用壽命，是航空發動機和燃氣輪機關鍵核心技術之一。在高溫、高壓、強氧化和強腐蝕的服役環境中，熱障涂層系統（thermal barrier coatings, TBCs）易發生涂層脫粘、起泡、屈曲、開裂、剝落等形式的失效，嚴重影響熱端部件的服役壽命。因此，研究TBCs損傷與斷裂對于保障高溫葉片等熱端部件的安全穩定運行具有重要意義。針對TBCs損傷與斷裂問題，重點介紹了近年來TBCs的失效機理、本構模型、損傷與斷裂的力學分析方法方面的研究成果，在熱循環/熱沖擊和熱機械載荷作用下、腐蝕環境下TBCs的損傷與斷裂行為，以及TBCs強度試驗與損傷檢測方法的研究進展，分析總結了TBCs損傷與斷裂研究的發展趨勢，力求為我國航空發動機和燃氣輪機的基礎研究和技術開發提供支撐。

Abstract:

Thermal barrier coating (TBC) is one of the key technologies of aeroengine and gas turbine, which can improve the service temperature and service life of hot end components due to their abilities to insulate against the heat transfer and resist the oxidation, corrosion and erosion. Under the conditions with high temperature and pressure, strong oxidation and corrosion, thermal barrier coatings (TBCs) are prone to failure in the form of coating debonding, blistering, buckling, cracking and spalling, which seriously limits the service life of hot end components. Therefore, it is of great significance to study the damage and fracture mechanism of TBCs to ensure the safety and stability of high�瞭emperature blades and other hot end components in service. This article presents a comprehensive overview of development of TBCs,including: ① the damage and fracture behaviors and failure mechanisms of TBCs, ② constitutive model, ③ damage and fracture mechanics method and their behaviors under harsh environment, ④ the development of TBCs strength test and damage detection methods, ⑤ perspective for the study on damage and fracture of TBCs. The aim of this work is to provide support for basic research and technology development of aeroengine and gas turbine in China.