Thermal cycling oxidation and interfacial cracking behavior of TBCs with a Y-doped multi-principal component NiCoCrAlFe bond coat

被引：1
作者：
Liu, Xuanzhen [1 ]
Zhang, Han [1 ]
Li, Ling [1 ]
Huang, Aihui [1 ]
Luo, Lirong [1 ]
Guo, Fangwei [1 ]
Zhang, Xiancheng [2 ]
Lu, Jie [1 ]
Zhao, Xiaofeng [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formin, Shanghai 200240, Peoples R China
[2] East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2025年 / 496卷
基金：
中国国家自然科学基金;
关键词：
Thermal barrier coatings; Multi-principal component bond coat; Interfacial cracking; Oxidation; Thermal cycling; HIGH ENTROPY ALLOYS; BARRIER COATINGS; FAILURE MECHANISMS; GROWN OXIDE; ALUMINIDE; MICROSTRUCTURE; SYSTEMS; PROGRESS; DIFFUSION; PLATINUM;
D O I：
10.1016/j.surfcoat.2024.131676
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This study investigates the thermal cycling oxidation and interfacial cracking behavior of thermal barrier coatings (TBCs) with NiCoCrAlFeY bond coats at 1100 degrees C, and compares it with YSZ/NiCoCrAlY TBCs. Two TBCs form continuous and dense thermally grown oxide (TGO), consisting of an outer spinel and an inner Al2O3. The spinel in YSZ/NiCoCrAlY TBCs is mainly composed of (Co, Ni)Al2O4, whereas (Ni, Co)(Fe, Cr)2O4 predominates in YSZ/NiCoCrAlFeY TBCs. Failure of TBCs is caused by cracking in ceramic layers near the top coat/TGO interface. The lifetime of YSZ/NiCoCrAlFeY TBCs is 2.8 times longer than that of YSZ/NiCoCrAlY TBCs, which is attributed to lower TGO growth rates, small amount of spinel and associated delay in the formation of larger interfacial cracking.
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页数：12
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